<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019ff766-ba0c-7de4-9705-f58768e0ef79,g:1de579a6-6655-4c41-99a2-fd4cf8c0e15a-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.pangaeals.com/role/ConsolidatedStatementsofIncome" xlink:type="simple" xlink:href="panl-20260930.xsd#ConsolidatedStatementsofIncome"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/ConsolidatedStatementsofIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019ff766-bb83-70b3-b17c-88d5a957ec51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019ff766-bb83-79d5-b53a-be5f289a9b24" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019ff766-bb83-70b3-b17c-88d5a957ec51" xlink:to="loc_us-gaap_StatementTable_019ff766-bb83-79d5-b53a-be5f289a9b24" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019ff766-bb83-77b2-8f7f-1143238e3c14" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019ff766-bb83-79d5-b53a-be5f289a9b24" xlink:to="loc_srt_ProductOrServiceAxis_019ff766-bb83-77b2-8f7f-1143238e3c14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019ff766-bb83-77b2-8f7f-1143238e3c14_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019ff766-bb83-77b2-8f7f-1143238e3c14" xlink:to="loc_srt_ProductsAndServicesDomain_019ff766-bb83-77b2-8f7f-1143238e3c14_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019ff766-bb83-7ce1-81b5-1f423cce56cc" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019ff766-bb83-77b2-8f7f-1143238e3c14" xlink:to="loc_srt_ProductsAndServicesDomain_019ff766-bb83-7ce1-81b5-1f423cce56cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_VoyageMember_019ff766-bb83-79cc-bf57-d8c681888b0b" xlink:href="panl-20260930.xsd#panl_VoyageMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019ff766-bb83-7ce1-81b5-1f423cce56cc" xlink:to="loc_panl_VoyageMember_019ff766-bb83-79cc-bf57-d8c681888b0b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_CharterMember_019ff766-bb83-789f-8a4f-968086ad83f1" xlink:href="panl-20260930.xsd#panl_CharterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019ff766-bb83-7ce1-81b5-1f423cce56cc" xlink:to="loc_panl_CharterMember_019ff766-bb83-789f-8a4f-968086ad83f1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_TerminalStevedoreRevenueMember_019ff766-bb83-74aa-a82e-ce70c825c20b" xlink:href="panl-20260930.xsd#panl_TerminalStevedoreRevenueMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019ff766-bb83-7ce1-81b5-1f423cce56cc" xlink:to="loc_panl_TerminalStevedoreRevenueMember_019ff766-bb83-74aa-a82e-ce70c825c20b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerAbstract_019ff766-bb83-7208-b9ae-594c373c1f3c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019ff766-bb83-70b3-b17c-88d5a957ec51" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerAbstract_019ff766-bb83-7208-b9ae-594c373c1f3c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019ff766-bb83-71de-8afb-ea9972edcd4a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerAbstract_019ff766-bb83-7208-b9ae-594c373c1f3c" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019ff766-bb83-71de-8afb-ea9972edcd4a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpensesAbstract_019ff766-bb83-7fd5-9eef-dfbfaa0ea878" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpensesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019ff766-bb83-70b3-b17c-88d5a957ec51" xlink:to="loc_us-gaap_OperatingExpensesAbstract_019ff766-bb83-7fd5-9eef-dfbfaa0ea878" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_VoyageExpense_019ff766-bb83-79f6-891f-cd7eb3d5863c" xlink:href="panl-20260930.xsd#panl_VoyageExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019ff766-bb83-7fd5-9eef-dfbfaa0ea878" xlink:to="loc_panl_VoyageExpense_019ff766-bb83-79f6-891f-cd7eb3d5863c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_CharterHireExpense_019ff766-bb83-7e2b-a830-f8a713ebda7e" xlink:href="panl-20260930.xsd#panl_CharterHireExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019ff766-bb83-7fd5-9eef-dfbfaa0ea878" xlink:to="loc_panl_CharterHireExpense_019ff766-bb83-7e2b-a830-f8a713ebda7e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_VesselOperatingExpense_019ff766-bb83-745d-bca3-e72ea468dfb8" xlink:href="panl-20260930.xsd#panl_VesselOperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019ff766-bb83-7fd5-9eef-dfbfaa0ea878" xlink:to="loc_panl_VesselOperatingExpense_019ff766-bb83-745d-bca3-e72ea468dfb8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_TerminalStevedoreExpenses_019ff766-bb83-7bfa-9584-50047489d6b2" xlink:href="panl-20260930.xsd#panl_TerminalStevedoreExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019ff766-bb83-7fd5-9eef-dfbfaa0ea878" xlink:to="loc_panl_TerminalStevedoreExpenses_019ff766-bb83-7bfa-9584-50047489d6b2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_019ff766-bb83-72dc-859b-d751e100ef8e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019ff766-bb83-7fd5-9eef-dfbfaa0ea878" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_019ff766-bb83-72dc-859b-d751e100ef8e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAmortizationAndAccretionNet_019ff766-bb83-7db5-848b-78737d02377e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationAmortizationAndAccretionNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019ff766-bb83-7fd5-9eef-dfbfaa0ea878" xlink:to="loc_us-gaap_DepreciationAmortizationAndAccretionNet_019ff766-bb83-7db5-848b-78737d02377e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfOtherAssets_019ff766-bb83-7d40-bc2e-a928e96add04" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSaleOfOtherAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019ff766-bb83-7fd5-9eef-dfbfaa0ea878" xlink:to="loc_us-gaap_GainLossOnSaleOfOtherAssets_019ff766-bb83-7d40-bc2e-a928e96add04" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_019ff766-bb83-73cf-8d7d-a39acb4031df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingExpenses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_019ff766-bb83-7fd5-9eef-dfbfaa0ea878" xlink:to="loc_us-gaap_OperatingExpenses_019ff766-bb83-73cf-8d7d-a39acb4031df" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019ff766-bb83-7b5f-8c47-76be8cb5084c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019ff766-bb83-70b3-b17c-88d5a957ec51" xlink:to="loc_us-gaap_OperatingIncomeLoss_019ff766-bb83-7b5f-8c47-76be8cb5084c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019ff766-bb83-7655-b55e-e049e5ebafc8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019ff766-bb83-70b3-b17c-88d5a957ec51" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019ff766-bb83-7655-b55e-e049e5ebafc8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRevenueExpenseNet_019ff766-bb83-72be-aff3-abaca7798281" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRevenueExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019ff766-bb83-7655-b55e-e049e5ebafc8" xlink:to="loc_us-gaap_InterestRevenueExpenseNet_019ff766-bb83-72be-aff3-abaca7798281" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestAndOtherIncome_019ff766-bb83-7244-8a23-e8a86d1eb741" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestAndOtherIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019ff766-bb83-7655-b55e-e049e5ebafc8" xlink:to="loc_us-gaap_InterestAndOtherIncome_019ff766-bb83-7244-8a23-e8a86d1eb741" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_019ff766-bb83-79c9-84de-c8b75d335e75" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019ff766-bb83-7655-b55e-e049e5ebafc8" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_019ff766-bb83-79c9-84de-c8b75d335e75" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019ff766-bb83-728d-8bbd-4d2c6328ec79" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_019ff766-bb83-7655-b55e-e049e5ebafc8" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_019ff766-bb83-728d-8bbd-4d2c6328ec79" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019ff766-bb83-7a74-abd9-eb0214aa7fd3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019ff766-bb83-70b3-b17c-88d5a957ec51" xlink:to="loc_us-gaap_ProfitLoss_019ff766-bb83-7a74-abd9-eb0214aa7fd3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_019ff766-bb83-7a71-a05a-b350a456eb98" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019ff766-bb83-70b3-b17c-88d5a957ec51" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_019ff766-bb83-7a71-a05a-b350a456eb98" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019ff766-bb83-73ad-98f3-bdc4690dc522" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019ff766-bb83-70b3-b17c-88d5a957ec51" xlink:to="loc_us-gaap_NetIncomeLoss_019ff766-bb83-73ad-98f3-bdc4690dc522" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_019ff766-bb83-7838-ba5d-403a7e2b843f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019ff766-bb83-70b3-b17c-88d5a957ec51" xlink:to="loc_us-gaap_EarningsPerShareAbstract_019ff766-bb83-7838-ba5d-403a7e2b843f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_019ff766-bb83-74d5-9efe-3a37440e3dab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_019ff766-bb83-7838-ba5d-403a7e2b843f" xlink:to="loc_us-gaap_EarningsPerShareBasic_019ff766-bb83-74d5-9efe-3a37440e3dab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_019ff766-bb83-768b-a739-03126e7a6070" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_019ff766-bb83-7838-ba5d-403a7e2b843f" xlink:to="loc_us-gaap_EarningsPerShareDiluted_019ff766-bb83-768b-a739-03126e7a6070" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_EarningsPerShareOtherDisclosureAbstract_019ff766-bb83-77b9-8d5c-374ae0cd52e9" xlink:href="panl-20260930.xsd#panl_EarningsPerShareOtherDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019ff766-bb83-70b3-b17c-88d5a957ec51" xlink:to="loc_panl_EarningsPerShareOtherDisclosureAbstract_019ff766-bb83-77b9-8d5c-374ae0cd52e9" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019ff766-bb83-708e-b74e-605ad84bc5bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_panl_EarningsPerShareOtherDisclosureAbstract_019ff766-bb83-77b9-8d5c-374ae0cd52e9" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019ff766-bb83-708e-b74e-605ad84bc5bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019ff766-bb83-730a-9075-896da290788d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_panl_EarningsPerShareOtherDisclosureAbstract_019ff766-bb83-77b9-8d5c-374ae0cd52e9" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019ff766-bb83-730a-9075-896da290788d" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/ConsolidatedStatementsofStockholdersEquity" xlink:type="simple" xlink:href="panl-20260930.xsd#ConsolidatedStatementsofStockholdersEquity"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/ConsolidatedStatementsofStockholdersEquity" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019ff766-bb83-72af-b1aa-43a32934e55e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019ff766-bb83-7d9b-afd6-804b0d768670" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019ff766-bb83-72af-b1aa-43a32934e55e" xlink:to="loc_us-gaap_StatementTable_019ff766-bb83-7d9b-afd6-804b0d768670" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019ff766-bb83-7747-907d-49bf84441b91" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019ff766-bb83-7d9b-afd6-804b0d768670" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019ff766-bb83-7747-907d-49bf84441b91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019ff766-bb83-7747-907d-49bf84441b91_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019ff766-bb83-7747-907d-49bf84441b91" xlink:to="loc_us-gaap_EquityComponentDomain_019ff766-bb83-7747-907d-49bf84441b91_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019ff766-bb83-77ce-87c0-5c933dea528c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019ff766-bb83-7747-907d-49bf84441b91" xlink:to="loc_us-gaap_EquityComponentDomain_019ff766-bb83-77ce-87c0-5c933dea528c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParentMember_019ff766-bb83-7c52-9cbe-6ee82343cad2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019ff766-bb83-77ce-87c0-5c933dea528c" xlink:to="loc_us-gaap_ParentMember_019ff766-bb83-7c52-9cbe-6ee82343cad2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_019ff766-bb83-711c-9295-5f7ba0f99373" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_019ff766-bb83-7c52-9cbe-6ee82343cad2" xlink:to="loc_us-gaap_CommonStockMember_019ff766-bb83-711c-9295-5f7ba0f99373" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_019ff766-bb83-775b-ae6d-3ce8da90fb42" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_019ff766-bb83-7c52-9cbe-6ee82343cad2" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_019ff766-bb83-775b-ae6d-3ce8da90fb42" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019ff766-bb83-79d0-9dc9-9f067c3b3614" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_019ff766-bb83-7c52-9cbe-6ee82343cad2" xlink:to="loc_us-gaap_RetainedEarningsMember_019ff766-bb83-79d0-9dc9-9f067c3b3614" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_019ff766-bb83-74de-b7d6-625b1d554160" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019ff766-bb83-77ce-87c0-5c933dea528c" xlink:to="loc_us-gaap_NoncontrollingInterestMember_019ff766-bb83-74de-b7d6-625b1d554160" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019ff766-bb83-746f-9d74-257fbc74b03f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019ff766-bb83-72af-b1aa-43a32934e55e" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019ff766-bb83-746f-9d74-257fbc74b03f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_019ff766-bb83-7170-a4c8-a6cdd27c1f84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019ff766-bb83-746f-9d74-257fbc74b03f" xlink:to="loc_us-gaap_SharesOutstanding_019ff766-bb83-7170-a4c8-a6cdd27c1f84" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019ff766-bb83-7085-9429-6d620111d386" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019ff766-bb83-746f-9d74-257fbc74b03f" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019ff766-bb83-7085-9429-6d620111d386" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019ff766-bb83-73d2-ab90-c81352d3e1fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019ff766-bb83-746f-9d74-257fbc74b03f" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019ff766-bb83-73d2-ab90-c81352d3e1fd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_019ff766-bb83-7181-a0e7-13e34f1514ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019ff766-bb83-746f-9d74-257fbc74b03f" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_019ff766-bb83-7181-a0e7-13e34f1514ce" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_019ff766-bb83-70c3-a7fe-9a204b0d177f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019ff766-bb83-746f-9d74-257fbc74b03f" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_019ff766-bb83-70c3-a7fe-9a204b0d177f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_019ff766-bb83-797d-b6ab-7819bd9b06f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019ff766-bb83-746f-9d74-257fbc74b03f" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_019ff766-bb83-797d-b6ab-7819bd9b06f8" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_019ff766-bb83-7dc0-a73d-952475624e03" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019ff766-bb83-746f-9d74-257fbc74b03f" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_019ff766-bb83-7dc0-a73d-952475624e03" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_019ff766-bb83-71d5-8fae-828ab555cb2f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019ff766-bb83-746f-9d74-257fbc74b03f" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_019ff766-bb83-71d5-8fae-828ab555cb2f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromRedemptions_01a19d1a-f0e9-72d6-9e69-5919b1b0bbd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterestDecreaseFromRedemptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019ff766-bb83-746f-9d74-257fbc74b03f" xlink:to="loc_us-gaap_MinorityInterestDecreaseFromRedemptions_01a19d1a-f0e9-72d6-9e69-5919b1b0bbd4" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStock_019ff766-bb83-7fed-ab63-a58da36fdd03" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019ff766-bb83-746f-9d74-257fbc74b03f" xlink:to="loc_us-gaap_DividendsCommonStock_019ff766-bb83-7fed-ab63-a58da36fdd03" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NoncontrollingInterestIncreaseFromConsolidationOfSubsidiary_019ff766-bb83-7443-919e-af602625e186" xlink:href="panl-20260930.xsd#panl_NoncontrollingInterestIncreaseFromConsolidationOfSubsidiary"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019ff766-bb83-746f-9d74-257fbc74b03f" xlink:to="loc_panl_NoncontrollingInterestIncreaseFromConsolidationOfSubsidiary_019ff766-bb83-7443-919e-af602625e186" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019ff766-bb83-7be2-a072-daa18bc47f6c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019ff766-bb83-746f-9d74-257fbc74b03f" xlink:to="loc_us-gaap_ProfitLoss_019ff766-bb83-7be2-a072-daa18bc47f6c" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_019ff766-bb83-7909-9390-56e6780de941" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019ff766-bb83-7cae-9079-5c864c53687e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/GeneralInformationandRecentEventsDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#GeneralInformationandRecentEventsDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/GeneralInformationandRecentEventsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7f02-8106-8c506b67ee1b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7030-a3b0-86a04f55c4d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7f02-8106-8c506b67ee1b" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7030-a3b0-86a04f55c4d7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019ff766-bb83-7da1-a700-d00c2d2194d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7030-a3b0-86a04f55c4d7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019ff766-bb83-7da1-a700-d00c2d2194d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7da1-a700-d00c2d2194d1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019ff766-bb83-7da1-a700-d00c2d2194d1" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7da1-a700-d00c2d2194d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-769b-9184-ba7736d6142d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019ff766-bb83-7da1-a700-d00c2d2194d1" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-769b-9184-ba7736d6142d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PanamaxMember_019ff766-bb83-7aaa-a796-8657e95171d3" xlink:href="panl-20260930.xsd#panl_PanamaxMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-769b-9184-ba7736d6142d" xlink:to="loc_panl_PanamaxMember_019ff766-bb83-7aaa-a796-8657e95171d3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_UltramaxIceClass1CMember_019ff766-bb83-7269-bc7e-e1ee3f210d28" xlink:href="panl-20260930.xsd#panl_UltramaxIceClass1CMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-769b-9184-ba7736d6142d" xlink:to="loc_panl_UltramaxIceClass1CMember_019ff766-bb83-7269-bc7e-e1ee3f210d28" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_UltramaxMember_019ff766-bb83-79d1-bcad-30f240f4bda8" xlink:href="panl-20260930.xsd#panl_UltramaxMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-769b-9184-ba7736d6142d" xlink:to="loc_panl_UltramaxMember_019ff766-bb83-79d1-bcad-30f240f4bda8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_SupramaxMember_019ff766-bb83-723f-915e-5dd133d48884" xlink:href="panl-20260930.xsd#panl_SupramaxMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-769b-9184-ba7736d6142d" xlink:to="loc_panl_SupramaxMember_019ff766-bb83-723f-915e-5dd133d48884" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PostPanamaxIceClass1AMember_019ff766-bb83-70cd-b6d1-07a5f0e894b0" xlink:href="panl-20260930.xsd#panl_PostPanamaxIceClass1AMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-769b-9184-ba7736d6142d" xlink:to="loc_panl_PostPanamaxIceClass1AMember_019ff766-bb83-70cd-b6d1-07a5f0e894b0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PanamaxIceClass1AMember_019ff766-bb83-7cf2-aa33-0390a19f1d3a" xlink:href="panl-20260930.xsd#panl_PanamaxIceClass1AMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-769b-9184-ba7736d6142d" xlink:to="loc_panl_PanamaxIceClass1AMember_019ff766-bb83-7cf2-aa33-0390a19f1d3a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_HandysizeMember_019ff766-bb83-79da-acdd-8c7ad956db6c" xlink:href="panl-20260930.xsd#panl_HandysizeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-769b-9184-ba7736d6142d" xlink:to="loc_panl_HandysizeMember_019ff766-bb83-79da-acdd-8c7ad956db6c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7cdc-97fa-890c301569df" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7030-a3b0-86a04f55c4d7" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7cdc-97fa-890c301569df" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7cdc-97fa-890c301569df_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7cdc-97fa-890c301569df" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7cdc-97fa-890c301569df_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7014-af67-cd2c5a732a9d" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7cdc-97fa-890c301569df" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7014-af67-cd2c5a732a9d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_OwnerOfDeckBargeMember_019ff766-bb83-7593-96ed-141ba477e820" xlink:href="panl-20260930.xsd#panl_OwnerOfDeckBargeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7014-af67-cd2c5a732a9d" xlink:to="loc_panl_OwnerOfDeckBargeMember_019ff766-bb83-7593-96ed-141ba477e820" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NordicBulkVenturesHoldingCompanyLtd.Member_019ff766-bb83-71ed-bdf9-2e0053a12595" xlink:href="panl-20260930.xsd#panl_NordicBulkVenturesHoldingCompanyLtd.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7014-af67-cd2c5a732a9d" xlink:to="loc_panl_NordicBulkVenturesHoldingCompanyLtd.Member_019ff766-bb83-71ed-bdf9-2e0053a12595" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_019ff766-bb83-7e89-830a-8741c67c5925" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7030-a3b0-86a04f55c4d7" xlink:to="loc_dei_LegalEntityAxis_019ff766-bb83-7e89-830a-8741c67c5925" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019ff766-bb83-7e89-830a-8741c67c5925_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_019ff766-bb83-7e89-830a-8741c67c5925" xlink:to="loc_dei_EntityDomain_019ff766-bb83-7e89-830a-8741c67c5925_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019ff766-bb83-777b-a6ec-8088af10ee06" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_019ff766-bb83-7e89-830a-8741c67c5925" xlink:to="loc_dei_EntityDomain_019ff766-bb83-777b-a6ec-8088af10ee06" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NordicBulkVenturesHoldingCompanyLtd.Member_019ff766-bb83-7027-b109-595674e5ba97" xlink:href="panl-20260930.xsd#panl_NordicBulkVenturesHoldingCompanyLtd.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019ff766-bb83-777b-a6ec-8088af10ee06" xlink:to="loc_panl_NordicBulkVenturesHoldingCompanyLtd.Member_019ff766-bb83-7027-b109-595674e5ba97" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NumberOfVessels_019ff766-bb83-7595-bfe3-b14e08832952" xlink:href="panl-20260930.xsd#panl_NumberOfVessels"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7f02-8106-8c506b67ee1b" xlink:to="loc_panl_NumberOfVessels_019ff766-bb83-7595-bfe3-b14e08832952" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019ff766-bb83-768e-a5bf-0fb17613ac05" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7f02-8106-8c506b67ee1b" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019ff766-bb83-768e-a5bf-0fb17613ac05" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/BasisofPresentationandSignificantAccountingPoliciesAdditionalInformationDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#BasisofPresentationandSignificantAccountingPoliciesAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/BasisofPresentationandSignificantAccountingPoliciesAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7499-b6c8-88727400559b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7499-b6c8-88727400559b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MajorCustomersAxis_019ff766-bb83-751a-a759-bac6cc63d2c5" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MajorCustomersAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7499-b6c8-88727400559b" xlink:to="loc_srt_MajorCustomersAxis_019ff766-bb83-751a-a759-bac6cc63d2c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_019ff766-bb83-751a-a759-bac6cc63d2c5_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_MajorCustomersAxis_019ff766-bb83-751a-a759-bac6cc63d2c5" xlink:to="loc_srt_NameOfMajorCustomerDomain_019ff766-bb83-751a-a759-bac6cc63d2c5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NameOfMajorCustomerDomain_019ff766-bb83-7d8b-a5ac-a8bdd67dc78a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_NameOfMajorCustomerDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_MajorCustomersAxis_019ff766-bb83-751a-a759-bac6cc63d2c5" xlink:to="loc_srt_NameOfMajorCustomerDomain_019ff766-bb83-7d8b-a5ac-a8bdd67dc78a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_OneCustomerMember_019ff766-bb83-7f86-af8a-84e2ab81e8e0" xlink:href="panl-20260930.xsd#panl_OneCustomerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_NameOfMajorCustomerDomain_019ff766-bb83-7d8b-a5ac-a8bdd67dc78a" xlink:to="loc_panl_OneCustomerMember_019ff766-bb83-7f86-af8a-84e2ab81e8e0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019ff766-bb83-7e82-8f38-444c164b0fbf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7499-b6c8-88727400559b" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019ff766-bb83-7e82-8f38-444c164b0fbf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019ff766-bb83-7e82-8f38-444c164b0fbf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019ff766-bb83-7e82-8f38-444c164b0fbf" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019ff766-bb83-7e82-8f38-444c164b0fbf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019ff766-bb83-71d0-9c82-98a67c2a8646" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_019ff766-bb83-7e82-8f38-444c164b0fbf" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019ff766-bb83-71d0-9c82-98a67c2a8646" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableMember_019ff766-bb83-70a7-b7d4-bbcfa8b645d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_019ff766-bb83-71d0-9c82-98a67c2a8646" xlink:to="loc_us-gaap_AccountsReceivableMember_019ff766-bb83-70a7-b7d4-bbcfa8b645d4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_019ff766-bb83-726b-bf78-6b092517da13" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7499-b6c8-88727400559b" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_019ff766-bb83-726b-bf78-6b092517da13" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_019ff766-bb83-726b-bf78-6b092517da13_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_019ff766-bb83-726b-bf78-6b092517da13" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_019ff766-bb83-726b-bf78-6b092517da13_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_019ff766-bb83-7b6b-bec2-b7c200ccdd2a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_019ff766-bb83-726b-bf78-6b092517da13" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_019ff766-bb83-7b6b-bec2-b7c200ccdd2a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicConcentrationRiskMember_019ff766-bb83-7811-8de0-b39c8df65417" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeographicConcentrationRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_019ff766-bb83-7b6b-bec2-b7c200ccdd2a" xlink:to="loc_us-gaap_GeographicConcentrationRiskMember_019ff766-bb83-7811-8de0-b39c8df65417" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019ff766-bb83-7d0c-849d-4b0b51e7cec1" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7499-b6c8-88727400559b" xlink:to="loc_srt_RangeAxis_019ff766-bb83-7d0c-849d-4b0b51e7cec1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019ff766-bb83-7d0c-849d-4b0b51e7cec1_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019ff766-bb83-7d0c-849d-4b0b51e7cec1" xlink:to="loc_srt_RangeMember_019ff766-bb83-7d0c-849d-4b0b51e7cec1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019ff766-bb83-75a0-8ee8-7a811bc62a80" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019ff766-bb83-7d0c-849d-4b0b51e7cec1" xlink:to="loc_srt_RangeMember_019ff766-bb83-75a0-8ee8-7a811bc62a80" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019ff766-bb83-7c6f-8651-cc34fd7b21ad" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019ff766-bb83-75a0-8ee8-7a811bc62a80" xlink:to="loc_srt_MinimumMember_019ff766-bb83-7c6f-8651-cc34fd7b21ad" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019ff766-bb83-72ff-a126-cfd2627f6fd4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019ff766-bb83-75a0-8ee8-7a811bc62a80" xlink:to="loc_srt_MaximumMember_019ff766-bb83-72ff-a126-cfd2627f6fd4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAxis_019ff766-bb83-762a-9f94-bfd24bb84402" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RestatementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7499-b6c8-88727400559b" xlink:to="loc_srt_RestatementAxis_019ff766-bb83-762a-9f94-bfd24bb84402" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_019ff766-bb83-762a-9f94-bfd24bb84402_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_019ff766-bb83-762a-9f94-bfd24bb84402" xlink:to="loc_srt_RestatementDomain_019ff766-bb83-762a-9f94-bfd24bb84402_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_019ff766-bb83-79a9-91fe-18c61e04a3d5" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_019ff766-bb83-762a-9f94-bfd24bb84402" xlink:to="loc_srt_RestatementDomain_019ff766-bb83-79a9-91fe-18c61e04a3d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAdjustmentMember_019ff766-bb83-73b7-a041-1c27925730c7" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RestatementAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_019ff766-bb83-79a9-91fe-18c61e04a3d5" xlink:to="loc_srt_RestatementAdjustmentMember_019ff766-bb83-73b7-a041-1c27925730c7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_019ff766-bb83-79d3-ae49-94b5d61e9022" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7499-b6c8-88727400559b" xlink:to="loc_srt_StatementScenarioAxis_019ff766-bb83-79d3-ae49-94b5d61e9022" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_019ff766-bb83-79d3-ae49-94b5d61e9022_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_019ff766-bb83-79d3-ae49-94b5d61e9022" xlink:to="loc_srt_ScenarioUnspecifiedDomain_019ff766-bb83-79d3-ae49-94b5d61e9022_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_019ff766-bb83-7998-a350-5fb0b9bc170a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_019ff766-bb83-79d3-ae49-94b5d61e9022" xlink:to="loc_srt_ScenarioUnspecifiedDomain_019ff766-bb83-7998-a350-5fb0b9bc170a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_019ff766-bb83-7395-ba64-55ca99f397b4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_019ff766-bb83-7998-a350-5fb0b9bc170a" xlink:to="loc_srt_ScenarioForecastMember_019ff766-bb83-7395-ba64-55ca99f397b4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019ff766-bb83-7fcf-8141-d55bd9d57fc5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7499-b6c8-88727400559b" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019ff766-bb83-7fcf-8141-d55bd9d57fc5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7fcf-8141-d55bd9d57fc5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019ff766-bb83-7fcf-8141-d55bd9d57fc5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7fcf-8141-d55bd9d57fc5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-76b5-bff4-ad24afcaef6b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019ff766-bb83-7fcf-8141-d55bd9d57fc5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-76b5-bff4-ad24afcaef6b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_DryBulkVesselMember_019ff766-bb83-7ba0-9028-9e93ec8e93ed" xlink:href="panl-20260930.xsd#panl_DryBulkVesselMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-76b5-bff4-ad24afcaef6b" xlink:to="loc_panl_DryBulkVesselMember_019ff766-bb83-7ba0-9028-9e93ec8e93ed" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_019ff766-bb83-7f46-b684-49951207ede9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ConcentrationRiskPercentage1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_019ff766-bb83-7f46-b684-49951207ede9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_019ff766-bb83-71c4-a2c8-ea3b6feb95af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_019ff766-bb83-71c4-a2c8-ea3b6feb95af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentDividendsOrDistributions_019ff766-bb83-729b-a665-98b7f3bdce45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentDividendsOrDistributions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_us-gaap_EquityMethodInvestmentDividendsOrDistributions_019ff766-bb83-729b-a665-98b7f3bdce45" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NumberOfVesselsLeasedToCustomers_019ff766-bb83-78a1-8e7f-b27e9430e4c4" xlink:href="panl-20260930.xsd#panl_NumberOfVesselsLeasedToCustomers"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_panl_NumberOfVesselsLeasedToCustomers_019ff766-bb83-78a1-8e7f-b27e9430e4c4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseTermOfContract_019ff766-bb83-7ca5-a43c-17c38a873c7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseTermOfContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_us-gaap_LesseeOperatingLeaseTermOfContract_019ff766-bb83-7ca5-a43c-17c38a873c7c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_TimeCharterTermToCompletion_019ff766-bb83-7618-b5fd-4ac68e039f21" xlink:href="panl-20260930.xsd#panl_TimeCharterTermToCompletion"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_panl_TimeCharterTermToCompletion_019ff766-bb83-7618-b5fd-4ac68e039f21" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NumberOfNoncancelableOfficeLeases_019ff766-bb83-762d-9fbb-04b96d3a533e" xlink:href="panl-20260930.xsd#panl_NumberOfNoncancelableOfficeLeases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_panl_NumberOfNoncancelableOfficeLeases_019ff766-bb83-762d-9fbb-04b96d3a533e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_VoyageContractPaymentTermsPercentageOfFreight_019ff766-bb83-739c-882b-484aab5bf452" xlink:href="panl-20260930.xsd#panl_VoyageContractPaymentTermsPercentageOfFreight"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_panl_VoyageContractPaymentTermsPercentageOfFreight_019ff766-bb83-739c-882b-484aab5bf452" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_VoyageContractPaymentTermsCollectionPeriod_019ff766-bb83-746f-85fc-2719f1f86122" xlink:href="panl-20260930.xsd#panl_VoyageContractPaymentTermsCollectionPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_panl_VoyageContractPaymentTermsCollectionPeriod_019ff766-bb83-746f-85fc-2719f1f86122" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_019ff766-bb83-79f8-a2d7-0682f5c99546" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_us-gaap_EarningsPerShareBasic_019ff766-bb83-79f8-a2d7-0682f5c99546" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_019ff766-bb83-7104-854b-0904f37cedf6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_us-gaap_EarningsPerShareDiluted_019ff766-bb83-7104-854b-0904f37cedf6" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019ff766-bb83-77b1-a2c3-43dc3e4b7306" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_us-gaap_ProfitLoss_019ff766-bb83-77b1-a2c3-43dc3e4b7306" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentPeriodIncreaseDecrease_019ff766-bb83-74ab-9258-6dd8aa6c43e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentPeriodIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentPeriodIncreaseDecrease_019ff766-bb83-74ab-9258-6dd8aa6c43e4" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_VesselsEstimatedScrapValue_019ff766-bb83-74c1-9ac4-272a2d7c533d" xlink:href="panl-20260930.xsd#panl_VesselsEstimatedScrapValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_panl_VesselsEstimatedScrapValue_019ff766-bb83-74c1-9ac4-272a2d7c533d" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_019ff766-bb83-779a-bef7-12a8e3b466cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_019ff766-bb83-779a-bef7-12a8e3b466cf" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NumberOfVessels_019ff766-bb83-704a-a7ba-b12086885a34" xlink:href="panl-20260930.xsd#panl_NumberOfVessels"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_panl_NumberOfVessels_019ff766-bb83-704a-a7ba-b12086885a34" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NumberOfVesselsShortenedDepreciationPeriod_019ff766-bb83-7168-aa5f-09d170f6bb12" xlink:href="panl-20260930.xsd#panl_NumberOfVesselsShortenedDepreciationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7aa7-aa6b-4ce5702eb2ef" xlink:to="loc_panl_NumberOfVesselsShortenedDepreciationPeriod_019ff766-bb83-7168-aa5f-09d170f6bb12" xlink:type="arc" order="16"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/BasisofPresentationandSignificantAccountingOtherNoncurrentAssetsDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#BasisofPresentationandSignificantAccountingOtherNoncurrentAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/BasisofPresentationandSignificantAccountingOtherNoncurrentAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019ff766-bb83-74c2-b389-ca314cc603a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019ff766-bb83-7791-b565-95abb037e3d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019ff766-bb83-74c2-b389-ca314cc603a4" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019ff766-bb83-7791-b565-95abb037e3d7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7fd8-8064-4f2e97a19c76" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019ff766-bb83-7791-b565-95abb037e3d7" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7fd8-8064-4f2e97a19c76" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7fd8-8064-4f2e97a19c76_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7fd8-8064-4f2e97a19c76" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7fd8-8064-4f2e97a19c76_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7ff6-95ee-9ccd09d15bb9" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7fd8-8064-4f2e97a19c76" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7ff6-95ee-9ccd09d15bb9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PangaeaLogisticsSolutionsUSLCCMember_019ff766-bb83-7f5d-b5ad-6045d15a6d20" xlink:href="panl-20260930.xsd#panl_PangaeaLogisticsSolutionsUSLCCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7ff6-95ee-9ccd09d15bb9" xlink:to="loc_panl_PangaeaLogisticsSolutionsUSLCCMember_019ff766-bb83-7f5d-b5ad-6045d15a6d20" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BayStevedoringLLCMember_019ff766-bb83-7771-9cf5-d5ebfab06b85" xlink:href="panl-20260930.xsd#panl_BayStevedoringLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7ff6-95ee-9ccd09d15bb9" xlink:to="loc_panl_BayStevedoringLLCMember_019ff766-bb83-7771-9cf5-d5ebfab06b85" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_OtherInvestmentsAxis_019ff766-bb83-7a65-9816-6457d7c64d7f" xlink:href="panl-20260930.xsd#panl_OtherInvestmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019ff766-bb83-7791-b565-95abb037e3d7" xlink:to="loc_panl_OtherInvestmentsAxis_019ff766-bb83-7a65-9816-6457d7c64d7f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_OtherInvestmentsDomain_019ff766-bb83-7a65-9816-6457d7c64d7f_default" xlink:href="panl-20260930.xsd#panl_OtherInvestmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_panl_OtherInvestmentsAxis_019ff766-bb83-7a65-9816-6457d7c64d7f" xlink:to="loc_panl_OtherInvestmentsDomain_019ff766-bb83-7a65-9816-6457d7c64d7f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_OtherInvestmentsDomain_019ff766-bb83-7ef0-a9cc-dbf6cb592a69" xlink:href="panl-20260930.xsd#panl_OtherInvestmentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_panl_OtherInvestmentsAxis_019ff766-bb83-7a65-9816-6457d7c64d7f" xlink:to="loc_panl_OtherInvestmentsDomain_019ff766-bb83-7ef0-a9cc-dbf6cb592a69" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_OthersMember_019ff766-bb83-7eeb-9989-d512bee2af87" xlink:href="panl-20260930.xsd#panl_OthersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_panl_OtherInvestmentsDomain_019ff766-bb83-7ef0-a9cc-dbf6cb592a69" xlink:to="loc_panl_OthersMember_019ff766-bb83-7eeb-9989-d512bee2af87" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019ff766-bb83-7726-b2b3-8858e87a08cc" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_019ff766-bb83-7791-b565-95abb037e3d7" xlink:to="loc_srt_RangeAxis_019ff766-bb83-7726-b2b3-8858e87a08cc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019ff766-bb83-7726-b2b3-8858e87a08cc_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019ff766-bb83-7726-b2b3-8858e87a08cc" xlink:to="loc_srt_RangeMember_019ff766-bb83-7726-b2b3-8858e87a08cc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019ff766-bb83-7230-9a81-68af1c718a56" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019ff766-bb83-7726-b2b3-8858e87a08cc" xlink:to="loc_srt_RangeMember_019ff766-bb83-7230-9a81-68af1c718a56" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019ff766-bb83-76c1-8679-d92c32922da9" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019ff766-bb83-7230-9a81-68af1c718a56" xlink:to="loc_srt_MinimumMember_019ff766-bb83-76c1-8679-d92c32922da9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019ff766-bb83-7fb5-aca8-cae96796670b" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019ff766-bb83-7230-9a81-68af1c718a56" xlink:to="loc_srt_MaximumMember_019ff766-bb83-7fb5-aca8-cae96796670b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019ff766-bb83-7a51-b3a2-38fab7776646" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019ff766-bb83-74c2-b389-ca314cc603a4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019ff766-bb83-7a51-b3a2-38fab7776646" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsNet_019ff766-bb83-7da1-865a-8e979f98c869" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019ff766-bb83-74c2-b389-ca314cc603a4" xlink:to="loc_us-gaap_OtherIntangibleAssetsNet_019ff766-bb83-7da1-865a-8e979f98c869" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsAndOtherNoncurrentAssets_019ff766-bb83-7eac-b333-7cb95ded4185" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentsAndOtherNoncurrentAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019ff766-bb83-74c2-b389-ca314cc603a4" xlink:to="loc_us-gaap_InvestmentsAndOtherNoncurrentAssets_019ff766-bb83-7eac-b333-7cb95ded4185" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_019ff766-bb83-742a-930c-4fa791a07887" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_019ff766-bb83-74c2-b389-ca314cc603a4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_019ff766-bb83-742a-930c-4fa791a07887" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/CashandCashEquivalentsDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#CashandCashEquivalentsDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/CashandCashEquivalentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsLineItems_019ff766-bb83-79f4-8f1a-d6f55bffc875" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_019ff766-bb83-7ee1-a1cc-d5e7c54aa46e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfCashAndCashEquivalentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_019ff766-bb83-79f4-8f1a-d6f55bffc875" xlink:to="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_019ff766-bb83-7ee1-a1cc-d5e7c54aa46e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAxis_019ff766-bb83-72ea-998e-fb671678fb08" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_019ff766-bb83-7ee1-a1cc-d5e7c54aa46e" xlink:to="loc_us-gaap_CashAndCashEquivalentsAxis_019ff766-bb83-72ea-998e-fb671678fb08" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019ff766-bb83-72ea-998e-fb671678fb08_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_019ff766-bb83-72ea-998e-fb671678fb08" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019ff766-bb83-72ea-998e-fb671678fb08_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019ff766-bb83-7242-ac96-df2f69be9450" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_019ff766-bb83-72ea-998e-fb671678fb08" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019ff766-bb83-7242-ac96-df2f69be9450" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PangaeaMember_019ff766-bb83-784f-af85-7d3361807646" xlink:href="panl-20260930.xsd#panl_PangaeaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019ff766-bb83-7242-ac96-df2f69be9450" xlink:to="loc_panl_PangaeaMember_019ff766-bb83-784f-af85-7d3361807646" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NBHCMember_019ff766-bb83-7233-bd89-cbfdc120aa94" xlink:href="panl-20260930.xsd#panl_NBHCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019ff766-bb83-7242-ac96-df2f69be9450" xlink:to="loc_panl_NBHCMember_019ff766-bb83-7233-bd89-cbfdc120aa94" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NBPMember_019ff766-bb83-7316-9931-7854b27bcd2c" xlink:href="panl-20260930.xsd#panl_NBPMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019ff766-bb83-7242-ac96-df2f69be9450" xlink:to="loc_panl_NBPMember_019ff766-bb83-7316-9931-7854b27bcd2c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7035-b447-35b5c8961927" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfCashAndCashEquivalentsTable_019ff766-bb83-7ee1-a1cc-d5e7c54aa46e" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7035-b447-35b5c8961927" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7035-b447-35b5c8961927_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7035-b447-35b5c8961927" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7035-b447-35b5c8961927_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7350-ab0b-772ba3c32580" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7035-b447-35b5c8961927" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7350-ab0b-772ba3c32580" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PangaeaMember_019ff766-bb83-7480-971f-f2335ba2342f" xlink:href="panl-20260930.xsd#panl_PangaeaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7350-ab0b-772ba3c32580" xlink:to="loc_panl_PangaeaMember_019ff766-bb83-7480-971f-f2335ba2342f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NordicBulkVenturesHoldingCompanyLtd.Member_019ff766-bb83-7dbe-ac40-5e731b358220" xlink:href="panl-20260930.xsd#panl_NordicBulkVenturesHoldingCompanyLtd.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7350-ab0b-772ba3c32580" xlink:to="loc_panl_NordicBulkVenturesHoldingCompanyLtd.Member_019ff766-bb83-7dbe-ac40-5e731b358220" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_DeckBargeMember_019ff766-bb83-7d0d-b088-552cefa4a54d" xlink:href="panl-20260930.xsd#panl_DeckBargeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7350-ab0b-772ba3c32580" xlink:to="loc_panl_DeckBargeMember_019ff766-bb83-7d0d-b088-552cefa4a54d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019ff766-bb83-71d8-bc15-bef88cc4f317" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_019ff766-bb83-79f4-8f1a-d6f55bffc875" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019ff766-bb83-71d8-bc15-bef88cc4f317" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019ff766-bb83-7053-9a5b-1a9d6686d3fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsLineItems_019ff766-bb83-79f4-8f1a-d6f55bffc875" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019ff766-bb83-7053-9a5b-1a9d6686d3fe" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/FixedAssetsDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#FixedAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/FixedAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7d74-b3ef-207c4e2f9639" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7c5d-a7e4-20fd4afdff63" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7d74-b3ef-207c4e2f9639" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7c5d-a7e4-20fd4afdff63" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019ff766-bb83-719c-8b15-babcf9c06527" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7c5d-a7e4-20fd4afdff63" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019ff766-bb83-719c-8b15-babcf9c06527" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-719c-8b15-babcf9c06527_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019ff766-bb83-719c-8b15-babcf9c06527" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-719c-8b15-babcf9c06527_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_019ff766-bb83-719c-8b15-babcf9c06527" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvNORDICODYSSEYMember_019ff766-bb83-728f-8765-3573e20f6c59" xlink:href="panl-20260930.xsd#panl_MvNORDICODYSSEYMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvNORDICODYSSEYMember_019ff766-bb83-728f-8765-3573e20f6c59" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvNordicOrionMember_019ff766-bb83-71b2-9a58-c1f13f22ae76" xlink:href="panl-20260930.xsd#panl_MvNordicOrionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvNordicOrionMember_019ff766-bb83-71b2-9a58-c1f13f22ae76" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvNORDICOSHIMAMember_019ff766-bb83-72a5-9d30-4c4d734c5ec6" xlink:href="panl-20260930.xsd#panl_MvNORDICOSHIMAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvNORDICOSHIMAMember_019ff766-bb83-72a5-9d30-4c4d734c5ec6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvNordicOlympicMember_019ff766-bb83-7a7c-8c4c-63076a7f3a75" xlink:href="panl-20260930.xsd#panl_MvNordicOlympicMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvNordicOlympicMember_019ff766-bb83-7a7c-8c4c-63076a7f3a75" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvNordicOdinMember_019ff766-bb83-7110-9d57-8811f6e987d6" xlink:href="panl-20260930.xsd#panl_MvNordicOdinMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvNordicOdinMember_019ff766-bb83-7110-9d57-8811f6e987d6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvNordicBulkOasisMember_019ff766-bb83-755d-9801-ce111a2c1120" xlink:href="panl-20260930.xsd#panl_MvNordicBulkOasisMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvNordicBulkOasisMember_019ff766-bb83-755d-9801-ce111a2c1120" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NordicNuluujaakMember_019ff766-bb83-7144-8fd8-a8018cfa5fa1" xlink:href="panl-20260930.xsd#panl_NordicNuluujaakMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_NordicNuluujaakMember_019ff766-bb83-7144-8fd8-a8018cfa5fa1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NordicQinnguaMember_019ff766-bb83-7ac0-a19e-39e166a4fdcb" xlink:href="panl-20260930.xsd#panl_NordicQinnguaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_NordicQinnguaMember_019ff766-bb83-7ac0-a19e-39e166a4fdcb" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NordicSikuMember_019ff766-bb83-7662-b4dc-672026f8e2fc" xlink:href="panl-20260930.xsd#panl_NordicSikuMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_NordicSikuMember_019ff766-bb83-7662-b4dc-672026f8e2fc" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NordicSanngijqqMember_019ff766-bb83-7c2c-9ecd-6c665ad3da00" xlink:href="panl-20260930.xsd#panl_NordicSanngijqqMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_NordicSanngijqqMember_019ff766-bb83-7c2c-9ecd-6c665ad3da00" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvBulkEnduranceMember_019ff766-bb83-7d6d-a808-2d07336ff8f1" xlink:href="panl-20260930.xsd#panl_MvBulkEnduranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvBulkEnduranceMember_019ff766-bb83-7d6d-a808-2d07336ff8f1" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvBULKCOURADEOUSMember_019ff766-bb83-7278-a7f6-7a4de07a1695" xlink:href="panl-20260930.xsd#panl_MvBULKCOURADEOUSMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvBULKCOURADEOUSMember_019ff766-bb83-7278-a7f6-7a4de07a1695" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvBULKConcordMember_019ff766-bb83-7580-a01a-7f82c8533499" xlink:href="panl-20260930.xsd#panl_MvBULKConcordMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvBULKConcordMember_019ff766-bb83-7580-a01a-7f82c8533499" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvBulkPrideMember_019ff766-bb83-73bb-a886-6b7c03c00990" xlink:href="panl-20260930.xsd#panl_MvBulkPrideMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvBulkPrideMember_019ff766-bb83-73bb-a886-6b7c03c00990" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BULKSpiritMember_019ff766-bb83-781e-80a8-cd53fae5a044" xlink:href="panl-20260930.xsd#panl_BULKSpiritMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_BULKSpiritMember_019ff766-bb83-781e-80a8-cd53fae5a044" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvBULKSACHUESTMember_019ff766-bb83-7c2c-87a6-5b0f072bf9d1" xlink:href="panl-20260930.xsd#panl_MvBULKSACHUESTMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvBULKSACHUESTMember_019ff766-bb83-7c2c-87a6-5b0f072bf9d1" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvBULKIndependenceMember_019ff766-bb83-74f3-9732-a51fc12ddd5a" xlink:href="panl-20260930.xsd#panl_MvBULKIndependenceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvBULKIndependenceMember_019ff766-bb83-74f3-9732-a51fc12ddd5a" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkFriendshipMember_019ff766-bb83-76d9-8787-2239a6e14e34" xlink:href="panl-20260930.xsd#panl_BulkFriendshipMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_BulkFriendshipMember_019ff766-bb83-76d9-8787-2239a6e14e34" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkValorMember_019ff766-bb83-7844-8d27-f69cb58c78f4" xlink:href="panl-20260930.xsd#panl_BulkValorMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_BulkValorMember_019ff766-bb83-7844-8d27-f69cb58c78f4" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvBULKPROMISEMember_019ff766-bb83-7199-9638-47421d0665e0" xlink:href="panl-20260930.xsd#panl_MvBULKPROMISEMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvBULKPROMISEMember_019ff766-bb83-7199-9638-47421d0665e0" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvBulkDestinyMember_019ff766-bb83-7c56-bcc4-8bf91a5a7b26" xlink:href="panl-20260930.xsd#panl_MvBulkDestinyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvBulkDestinyMember_019ff766-bb83-7c56-bcc4-8bf91a5a7b26" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvBulkPrudenceMember_019ff766-bb83-73fb-b998-88f2fefb1290" xlink:href="panl-20260930.xsd#panl_MvBulkPrudenceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvBulkPrudenceMember_019ff766-bb83-73fb-b998-88f2fefb1290" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvBULKPATIENCEMember_019ff766-bb83-7e80-a3af-c7022783e369" xlink:href="panl-20260930.xsd#panl_MvBULKPATIENCEMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvBULKPATIENCEMember_019ff766-bb83-7e80-a3af-c7022783e369" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvBULKBRENTONMember_019ff766-bb83-799a-9909-068abe4541db" xlink:href="panl-20260930.xsd#panl_MvBULKBRENTONMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvBULKBRENTONMember_019ff766-bb83-799a-9909-068abe4541db" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicResolveMember_019ff766-bb83-770a-965b-38d36e73992a" xlink:href="panl-20260930.xsd#panl_StrategicResolveMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_StrategicResolveMember_019ff766-bb83-770a-965b-38d36e73992a" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicExplorerMember_019ff766-bb83-7841-b2e6-b3fcf8573495" xlink:href="panl-20260930.xsd#panl_StrategicExplorerMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_StrategicExplorerMember_019ff766-bb83-7841-b2e6-b3fcf8573495" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicEntityMember_019ff766-bb83-7f50-a891-5ce65b132602" xlink:href="panl-20260930.xsd#panl_StrategicEntityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_StrategicEntityMember_019ff766-bb83-7f50-a891-5ce65b132602" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicSynergyMember_019ff766-bb83-7834-b45e-0b38a7a4b7ef" xlink:href="panl-20260930.xsd#panl_StrategicSynergyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_StrategicSynergyMember_019ff766-bb83-7834-b45e-0b38a7a4b7ef" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicAllianceMember_019ff766-bb83-730a-981b-94ee82ec9a3b" xlink:href="panl-20260930.xsd#panl_StrategicAllianceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_StrategicAllianceMember_019ff766-bb83-730a-981b-94ee82ec9a3b" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicUnityMember_019ff766-bb83-7b96-8934-a69509ec92f7" xlink:href="panl-20260930.xsd#panl_StrategicUnityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_StrategicUnityMember_019ff766-bb83-7b96-8934-a69509ec92f7" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicHarmonyMember_019ff766-bb83-7b65-a959-ab81a8f36c9a" xlink:href="panl-20260930.xsd#panl_StrategicHarmonyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_StrategicHarmonyMember_019ff766-bb83-7b65-a959-ab81a8f36c9a" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicEquityMember_019ff766-bb83-7142-9734-a1999a07ce69" xlink:href="panl-20260930.xsd#panl_StrategicEquityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_StrategicEquityMember_019ff766-bb83-7142-9734-a1999a07ce69" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicVentureMember_019ff766-bb83-7e55-b408-485101673e6d" xlink:href="panl-20260930.xsd#panl_StrategicVentureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_StrategicVentureMember_019ff766-bb83-7e55-b408-485101673e6d" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicSavannahMember_019ff766-bb83-7cd6-bc9c-d7dd64504534" xlink:href="panl-20260930.xsd#panl_StrategicSavannahMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_StrategicSavannahMember_019ff766-bb83-7cd6-bc9c-d7dd64504534" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicSpiritMember_019ff766-bb83-7e4d-acc5-36634419e84b" xlink:href="panl-20260930.xsd#panl_StrategicSpiritMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_StrategicSpiritMember_019ff766-bb83-7e4d-acc5-36634419e84b" xlink:type="arc" order="34"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicVisionMember_019ff766-bb83-7556-9525-c20d491b6e1e" xlink:href="panl-20260930.xsd#panl_StrategicVisionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_StrategicVisionMember_019ff766-bb83-7556-9525-c20d491b6e1e" xlink:type="arc" order="35"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicTenacityMember_019ff766-bb83-719b-9a8d-f1b23cd4c2c3" xlink:href="panl-20260930.xsd#panl_StrategicTenacityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_StrategicTenacityMember_019ff766-bb83-719b-9a8d-f1b23cd4c2c3" xlink:type="arc" order="36"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MissNoraGPearlMember_019ff766-bb83-7949-b153-08012917881b" xlink:href="panl-20260930.xsd#panl_MissNoraGPearlMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MissNoraGPearlMember_019ff766-bb83-7949-b153-08012917881b" xlink:type="arc" order="37"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_OtherFixedAssetsMember_019ff766-bb83-7aef-8077-2d743cf5bb86" xlink:href="panl-20260930.xsd#panl_OtherFixedAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_OtherFixedAssetsMember_019ff766-bb83-7aef-8077-2d743cf5bb86" xlink:type="arc" order="38"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicFortitudeMember_019ff766-bb83-798e-861b-d2a341ca7032" xlink:href="panl-20260930.xsd#panl_StrategicFortitudeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_StrategicFortitudeMember_019ff766-bb83-798e-861b-d2a341ca7032" xlink:type="arc" order="39"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FixedAssetsExcludingOtherMember_019ff766-bb83-7e72-bcfb-3ea6ca89c66d" xlink:href="panl-20260930.xsd#panl_FixedAssetsExcludingOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_FixedAssetsExcludingOtherMember_019ff766-bb83-7e72-bcfb-3ea6ca89c66d" xlink:type="arc" order="40"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MvBulkXaymacaMember_019ff766-bb83-72e5-a4ad-13394f1c1c18" xlink:href="panl-20260930.xsd#panl_MvBulkXaymacaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_019ff766-bb83-7973-8911-6279cde3dcbb" xlink:to="loc_panl_MvBulkXaymacaMember_019ff766-bb83-72e5-a4ad-13394f1c1c18" xlink:type="arc" order="41"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7bf4-878d-9c7372282359" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7c5d-a7e4-20fd4afdff63" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7bf4-878d-9c7372282359" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7bf4-878d-9c7372282359_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7bf4-878d-9c7372282359" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7bf4-878d-9c7372282359_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7c08-b5df-99cb0b9bac58" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7bf4-878d-9c7372282359" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7c08-b5df-99cb0b9bac58" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_OwnerOfDeckBargeMember_019ff766-bb83-757d-8836-ee180a7134c3" xlink:href="panl-20260930.xsd#panl_OwnerOfDeckBargeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7c08-b5df-99cb0b9bac58" xlink:to="loc_panl_OwnerOfDeckBargeMember_019ff766-bb83-757d-8836-ee180a7134c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NordicBulkVenturesHoldingCompanyLtd.Member_019ff766-bb83-7fe2-ad65-59890211fe65" xlink:href="panl-20260930.xsd#panl_NordicBulkVenturesHoldingCompanyLtd.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7c08-b5df-99cb0b9bac58" xlink:to="loc_panl_NordicBulkVenturesHoldingCompanyLtd.Member_019ff766-bb83-7fe2-ad65-59890211fe65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_019ff766-bb83-7b84-baf5-9d788f9fbeb6" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_019ff766-bb83-7c5d-a7e4-20fd4afdff63" xlink:to="loc_dei_LegalEntityAxis_019ff766-bb83-7b84-baf5-9d788f9fbeb6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019ff766-bb83-7b84-baf5-9d788f9fbeb6_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_019ff766-bb83-7b84-baf5-9d788f9fbeb6" xlink:to="loc_dei_EntityDomain_019ff766-bb83-7b84-baf5-9d788f9fbeb6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019ff766-bb83-7e06-9b08-3baca3d91a5c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_019ff766-bb83-7b84-baf5-9d788f9fbeb6" xlink:to="loc_dei_EntityDomain_019ff766-bb83-7e06-9b08-3baca3d91a5c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NordicBulkVenturesHoldingCompanyLtd.Member_019ff766-bb83-7b2a-8264-32ecc98a90b1" xlink:href="panl-20260930.xsd#panl_NordicBulkVenturesHoldingCompanyLtd.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019ff766-bb83-7e06-9b08-3baca3d91a5c" xlink:to="loc_panl_NordicBulkVenturesHoldingCompanyLtd.Member_019ff766-bb83-7b2a-8264-32ecc98a90b1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NumberOfDryBulkVessels_019ff766-bb83-7fee-ab7b-9924c8d0c940" xlink:href="panl-20260930.xsd#panl_NumberOfDryBulkVessels"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7d74-b3ef-207c4e2f9639" xlink:to="loc_panl_NumberOfDryBulkVessels_019ff766-bb83-7fee-ab7b-9924c8d0c940" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NumberOfBarges_019ff766-bb83-7a30-8770-2d8abdda60e0" xlink:href="panl-20260930.xsd#panl_NumberOfBarges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7d74-b3ef-207c4e2f9639" xlink:to="loc_panl_NumberOfBarges_019ff766-bb83-7a30-8770-2d8abdda60e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_VesselsAndVesselImprovementsPropertyPlantAndEquipementGross_019ff766-bb83-7422-a2bc-11cf148ff5ae" xlink:href="panl-20260930.xsd#panl_VesselsAndVesselImprovementsPropertyPlantAndEquipementGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7d74-b3ef-207c4e2f9639" xlink:to="loc_panl_VesselsAndVesselImprovementsPropertyPlantAndEquipementGross_019ff766-bb83-7422-a2bc-11cf148ff5ae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019ff766-bb83-7f59-a755-5d6d8ff4cd11" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7d74-b3ef-207c4e2f9639" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_019ff766-bb83-7f59-a755-5d6d8ff4cd11" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAsset_019ff766-bb83-7627-94f1-070a4389ec92" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseRightOfUseAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7d74-b3ef-207c4e2f9639" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAsset_019ff766-bb83-7627-94f1-070a4389ec92" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019ff766-bb83-7e13-8654-11f49e4ae13c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7d74-b3ef-207c4e2f9639" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019ff766-bb83-7e13-8654-11f49e4ae13c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_ProceedsfromSaleofVessel_019ff766-bb83-70a9-a26c-6ea1d225d688" xlink:href="panl-20260930.xsd#panl_ProceedsfromSaleofVessel"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7d74-b3ef-207c4e2f9639" xlink:to="loc_panl_ProceedsfromSaleofVessel_019ff766-bb83-70a9-a26c-6ea1d225d688" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_GainLossOnSaleOfVessel_019ff766-bb83-7773-8c9e-7497575f8324" xlink:href="panl-20260930.xsd#panl_GainLossOnSaleOfVessel"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_019ff766-bb83-7d74-b3ef-207c4e2f9639" xlink:to="loc_panl_GainLossOnSaleOfVessel_019ff766-bb83-7773-8c9e-7497575f8324" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/DebtScheduleofDebtDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#DebtScheduleofDebtDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/DebtScheduleofDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7043-96bd-d1106595365a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7305-9610-849f77f5ccb6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7043-96bd-d1106595365a" xlink:to="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7305-9610-849f77f5ccb6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019ff766-bb83-7720-ad57-94cac581fc52" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7305-9610-849f77f5ccb6" xlink:to="loc_us-gaap_DebtInstrumentAxis_019ff766-bb83-7720-ad57-94cac581fc52" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-7720-ad57-94cac581fc52_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019ff766-bb83-7720-ad57-94cac581fc52" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-7720-ad57-94cac581fc52_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-7622-8dc9-cdbc1535d80e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019ff766-bb83-7720-ad57-94cac581fc52" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-7622-8dc9-cdbc1535d80e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkNordicOasisLtd.LoanAgreementMember_019ff766-bb83-7fca-8d57-a7dc0d6ea5ca" xlink:href="panl-20260930.xsd#panl_BulkNordicOasisLtd.LoanAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-7622-8dc9-cdbc1535d80e" xlink:to="loc_panl_BulkNordicOasisLtd.LoanAgreementMember_019ff766-bb83-7fca-8d57-a7dc0d6ea5ca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkEnduranceLoanAgreementMember_019ff766-bb83-7614-a6af-af7ed7d52a5e" xlink:href="panl-20260930.xsd#panl_BulkEnduranceLoanAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-7622-8dc9-cdbc1535d80e" xlink:to="loc_panl_BulkEnduranceLoanAgreementMember_019ff766-bb83-7614-a6af-af7ed7d52a5e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkValorCorpLoanAgreementMember_019ff766-bb83-78e3-8542-d23f79741825" xlink:href="panl-20260930.xsd#panl_BulkValorCorpLoanAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-7622-8dc9-cdbc1535d80e" xlink:to="loc_panl_BulkValorCorpLoanAgreementMember_019ff766-bb83-78e3-8542-d23f79741825" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkPromiseCorpLoanMember_019ff766-bb83-7ec4-b678-64eabbdaf51d" xlink:href="panl-20260930.xsd#panl_BulkPromiseCorpLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-7622-8dc9-cdbc1535d80e" xlink:to="loc_panl_BulkPromiseCorpLoanMember_019ff766-bb83-7ec4-b678-64eabbdaf51d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkSachuestLoanAndSecurityAgreementMember_019ff766-bb83-724e-93c8-c368d8082b8d" xlink:href="panl-20260930.xsd#panl_BulkSachuestLoanAndSecurityAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-7622-8dc9-cdbc1535d80e" xlink:to="loc_panl_BulkSachuestLoanAndSecurityAgreementMember_019ff766-bb83-724e-93c8-c368d8082b8d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_LongWharfConstructionToTermDebtMember_019ff766-bb83-7527-853d-502f9e9cc1c2" xlink:href="panl-20260930.xsd#panl_LongWharfConstructionToTermDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-7622-8dc9-cdbc1535d80e" xlink:to="loc_panl_LongWharfConstructionToTermDebtMember_019ff766-bb83-7527-853d-502f9e9cc1c2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019ff766-bb83-7711-a8a7-6ad105efa5bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7305-9610-849f77f5ccb6" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019ff766-bb83-7711-a8a7-6ad105efa5bf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-7711-a8a7-6ad105efa5bf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019ff766-bb83-7711-a8a7-6ad105efa5bf" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-7711-a8a7-6ad105efa5bf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-7fa0-bc9b-ef044b1c188f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019ff766-bb83-7711-a8a7-6ad105efa5bf" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-7fa0-bc9b-ef044b1c188f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_019ff766-bb83-7245-bf29-e5a45ea9ab71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-7fa0-bc9b-ef044b1c188f" xlink:to="loc_us-gaap_SecuredDebtMember_019ff766-bb83-7245-bf29-e5a45ea9ab71" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7cc6-9ad9-e2a0d82d49d1" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7305-9610-849f77f5ccb6" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7cc6-9ad9-e2a0d82d49d1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7cc6-9ad9-e2a0d82d49d1_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7cc6-9ad9-e2a0d82d49d1" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7cc6-9ad9-e2a0d82d49d1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7539-b557-2e30be13aa82" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_019ff766-bb83-7cc6-9ad9-e2a0d82d49d1" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7539-b557-2e30be13aa82" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NordicBulkVenturesHoldingCompanyLtd.Member_019ff766-bb83-7a3b-9436-a06c20a03a70" xlink:href="panl-20260930.xsd#panl_NordicBulkVenturesHoldingCompanyLtd.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_019ff766-bb83-7539-b557-2e30be13aa82" xlink:to="loc_panl_NordicBulkVenturesHoldingCompanyLtd.Member_019ff766-bb83-7a3b-9436-a06c20a03a70" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_019ff766-bb83-7daa-a328-8c74285fa4a9" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7305-9610-849f77f5ccb6" xlink:to="loc_srt_OwnershipAxis_019ff766-bb83-7daa-a328-8c74285fa4a9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_019ff766-bb83-7daa-a328-8c74285fa4a9_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_019ff766-bb83-7daa-a328-8c74285fa4a9" xlink:to="loc_srt_OwnershipDomain_019ff766-bb83-7daa-a328-8c74285fa4a9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_019ff766-bb83-7986-a4fd-4dad749632d3" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_019ff766-bb83-7daa-a328-8c74285fa4a9" xlink:to="loc_srt_OwnershipDomain_019ff766-bb83-7986-a4fd-4dad749632d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_STShippingandTransportLtd.STSTMember_019ff766-bb83-7a2a-a494-d88655b7a550" xlink:href="panl-20260930.xsd#panl_STShippingandTransportLtd.STSTMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_019ff766-bb83-7986-a4fd-4dad749632d3" xlink:to="loc_panl_STShippingandTransportLtd.STSTMember_019ff766-bb83-7a2a-a494-d88655b7a550" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019ff766-bb83-7e44-aab1-a7b1aa013fe6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7305-9610-849f77f5ccb6" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019ff766-bb83-7e44-aab1-a7b1aa013fe6" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7e44-aab1-a7b1aa013fe6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019ff766-bb83-7e44-aab1-a7b1aa013fe6" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7e44-aab1-a7b1aa013fe6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7f19-b16e-79972b5eb2d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019ff766-bb83-7e44-aab1-a7b1aa013fe6" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7f19-b16e-79972b5eb2d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateCapMember_019ff766-bb83-7c7b-a5a8-a3091f2530e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateCapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7f19-b16e-79972b5eb2d4" xlink:to="loc_us-gaap_InterestRateCapMember_019ff766-bb83-7c7b-a5a8-a3091f2530e4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019ff766-bb83-75b4-a16b-21861c249563" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7043-96bd-d1106595365a" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019ff766-bb83-75b4-a16b-21861c249563" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnamortizedDebtIssuanceExpense_019ff766-bb83-78db-830f-69f9bfd8b045" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnamortizedDebtIssuanceExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7043-96bd-d1106595365a" xlink:to="loc_us-gaap_UnamortizedDebtIssuanceExpense_019ff766-bb83-78db-830f-69f9bfd8b045" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019ff766-bb83-794b-b87b-e35ce80c255f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7043-96bd-d1106595365a" xlink:to="loc_us-gaap_LongTermDebt_019ff766-bb83-794b-b87b-e35ce80c255f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_019ff766-bb83-7598-b6b8-f0f1575bdb66" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7043-96bd-d1106595365a" xlink:to="loc_us-gaap_LongTermDebtCurrent_019ff766-bb83-7598-b6b8-f0f1575bdb66" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019ff766-bb83-772b-bbef-85b897077649" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7043-96bd-d1106595365a" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019ff766-bb83-772b-bbef-85b897077649" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019ff766-bb83-773b-b0e6-71cbd0afb6d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7043-96bd-d1106595365a" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019ff766-bb83-773b-b0e6-71cbd0afb6d9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_019ff766-bb83-7982-b345-182bd7f370b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7043-96bd-d1106595365a" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_019ff766-bb83-7982-b345-182bd7f370b4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019ff766-bb83-7344-85a1-2db031c91445" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7043-96bd-d1106595365a" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_019ff766-bb83-7344-85a1-2db031c91445" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_019ff766-bb83-7152-85a6-b132ed9993b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7043-96bd-d1106595365a" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_019ff766-bb83-7152-85a6-b132ed9993b4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeBasisSpreadOnVariableRate_019ff766-bb83-74aa-88a7-e2086bd552f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeBasisSpreadOnVariableRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7043-96bd-d1106595365a" xlink:to="loc_us-gaap_DerivativeBasisSpreadOnVariableRate_019ff766-bb83-74aa-88a7-e2086bd552f1" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeFinanceLeaseTermOfContract1_019ff766-bb83-7b3b-b0b4-e623e22a2bf3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeFinanceLeaseTermOfContract1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7043-96bd-d1106595365a" xlink:to="loc_us-gaap_LesseeFinanceLeaseTermOfContract1_019ff766-bb83-7b3b-b0b4-e623e22a2bf3" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/DebtNarrativeDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#DebtNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/DebtNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7caa-8c3c-4cfdd3268298" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7d27-ac79-bf81ef7aa5ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7caa-8c3c-4cfdd3268298" xlink:to="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7d27-ac79-bf81ef7aa5ed" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_019ff766-bb83-7d42-a10b-08bd2e1db109" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_CounterpartyNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7d27-ac79-bf81ef7aa5ed" xlink:to="loc_srt_CounterpartyNameAxis_019ff766-bb83-7d42-a10b-08bd2e1db109" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019ff766-bb83-7d42-a10b-08bd2e1db109_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_019ff766-bb83-7d42-a10b-08bd2e1db109" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019ff766-bb83-7d42-a10b-08bd2e1db109_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019ff766-bb83-7e75-909f-ff8806b44fbb" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_019ff766-bb83-7d42-a10b-08bd2e1db109" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019ff766-bb83-7e75-909f-ff8806b44fbb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PangeaBaltimoreLLCMember_019ff766-bb83-7c4b-89be-fbc7dc9d55d6" xlink:href="panl-20260930.xsd#panl_PangeaBaltimoreLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_019ff766-bb83-7e75-909f-ff8806b44fbb" xlink:to="loc_panl_PangeaBaltimoreLLCMember_019ff766-bb83-7c4b-89be-fbc7dc9d55d6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_InstallmentSalesContract_019ff766-bb83-7455-b2f7-34c7fc34ebf4" xlink:href="panl-20260930.xsd#panl_InstallmentSalesContract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7caa-8c3c-4cfdd3268298" xlink:to="loc_panl_InstallmentSalesContract_019ff766-bb83-7455-b2f7-34c7fc34ebf4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesPayable_019ff766-bb83-78b9-a249-eef9d4940dfc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesPayable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7caa-8c3c-4cfdd3268298" xlink:to="loc_us-gaap_NotesPayable_019ff766-bb83-78b9-a249-eef9d4940dfc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019ff766-bb83-765c-b2da-2097f1e9dcca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7caa-8c3c-4cfdd3268298" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019ff766-bb83-765c-b2da-2097f1e9dcca" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_DebtInstrumentNumberOfMonthlyInstallments_019ff766-bb83-7cdb-ae68-516175d0e2dd" xlink:href="panl-20260930.xsd#panl_DebtInstrumentNumberOfMonthlyInstallments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7caa-8c3c-4cfdd3268298" xlink:to="loc_panl_DebtInstrumentNumberOfMonthlyInstallments_019ff766-bb83-7cdb-ae68-516175d0e2dd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrentAndNoncurrent_019ff766-bb83-76db-9907-a56e68db8c61" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestPayableCurrentAndNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7caa-8c3c-4cfdd3268298" xlink:to="loc_us-gaap_InterestPayableCurrentAndNoncurrent_019ff766-bb83-76db-9907-a56e68db8c61" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/DebtFutureMinimumAnnualPaymentsDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#DebtFutureMinimumAnnualPaymentsDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/DebtFutureMinimumAnnualPaymentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7fb8-9d2b-3eccf9411dd1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7720-976d-0deea8f7a412" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7fb8-9d2b-3eccf9411dd1" xlink:to="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7720-976d-0deea8f7a412" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019ff766-bb83-7c9d-9c30-47b59e387e43" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7720-976d-0deea8f7a412" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019ff766-bb83-7c9d-9c30-47b59e387e43" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-7c9d-9c30-47b59e387e43_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019ff766-bb83-7c9d-9c30-47b59e387e43" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-7c9d-9c30-47b59e387e43_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-7e25-ba68-902ef78eaa9f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019ff766-bb83-7c9d-9c30-47b59e387e43" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-7e25-ba68-902ef78eaa9f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_019ff766-bb83-7700-bce5-f14b121b9d72" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-7e25-ba68-902ef78eaa9f" xlink:to="loc_us-gaap_SecuredDebtMember_019ff766-bb83-7700-bce5-f14b121b9d72" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtByMaturityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7fb8-9d2b-3eccf9411dd1" xlink:to="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_019ff766-bb83-7dae-9513-aacc6d9ffc59" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_019ff766-bb83-7dae-9513-aacc6d9ffc59" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_019ff766-bb83-77db-b28f-a02ba2ac952a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_019ff766-bb83-77db-b28f-a02ba2ac952a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_019ff766-bb83-7a12-9df8-a3fd08ace450" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_019ff766-bb83-7a12-9df8-a3fd08ace450" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_019ff766-bb83-7c7f-8e85-ec046f0ab9a2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_019ff766-bb83-7c7f-8e85-ec046f0ab9a2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_019ff766-bb83-7182-85b4-422a464e53bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_019ff766-bb83-7182-85b4-422a464e53bf" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_019ff766-bb83-742e-84e3-d925ae2f54ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_019ff766-bb83-742e-84e3-d925ae2f54ca" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_LongTermDebtBeforeUnamortizedDiscountPremiumGross_019ff766-bb83-7676-a73c-d7029cebf944" xlink:href="panl-20260930.xsd#panl_LongTermDebtBeforeUnamortizedDiscountPremiumGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:to="loc_panl_LongTermDebtBeforeUnamortizedDiscountPremiumGross_019ff766-bb83-7676-a73c-d7029cebf944" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_019ff766-bb83-75fe-97ae-760502a64f8d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_019ff766-bb83-75fe-97ae-760502a64f8d" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019ff766-bb83-7f7d-a1aa-054f15069e65" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019ff766-bb83-7f7d-a1aa-054f15069e65" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnamortizedDebtIssuanceExpense_019ff766-bb83-77af-8449-fafb72c16390" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnamortizedDebtIssuanceExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:to="loc_us-gaap_UnamortizedDebtIssuanceExpense_019ff766-bb83-77af-8449-fafb72c16390" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019ff766-bb83-7760-bcfd-4be6f2895137" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:to="loc_us-gaap_LongTermDebt_019ff766-bb83-7760-bcfd-4be6f2895137" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_019ff766-bb83-7239-aacc-56a57de5b84a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:to="loc_us-gaap_LongTermDebtCurrent_019ff766-bb83-7239-aacc-56a57de5b84a" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019ff766-bb83-7e39-9dde-8c17160dd7e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_019ff766-bb83-7482-9b0c-f3f5f2f27d1f" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019ff766-bb83-7e39-9dde-8c17160dd7e6" xlink:type="arc" order="13"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/DebtScheduleofLongtermDebtDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#DebtScheduleofLongtermDebtDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/DebtScheduleofLongtermDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-75ae-bc0b-30ff3d92fb94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7ae6-aa1d-5fdde124d1c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-75ae-bc0b-30ff3d92fb94" xlink:to="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7ae6-aa1d-5fdde124d1c6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermAxis_019ff766-bb83-7b0d-a601-baad1d51bdd8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseContractualTermAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7ae6-aa1d-5fdde124d1c6" xlink:to="loc_us-gaap_LeaseContractualTermAxis_019ff766-bb83-7b0d-a601-baad1d51bdd8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7b0d-a601-baad1d51bdd8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseContractualTermDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LeaseContractualTermAxis_019ff766-bb83-7b0d-a601-baad1d51bdd8" xlink:to="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7b0d-a601-baad1d51bdd8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseContractualTermDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LeaseContractualTermAxis_019ff766-bb83-7b0d-a601-baad1d51bdd8" xlink:to="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkSpiritLtdFebruary2027Member_019ff766-bb83-7d27-ae8a-9592b77b5862" xlink:href="panl-20260930.xsd#panl_BulkSpiritLtdFebruary2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_BulkSpiritLtdFebruary2027Member_019ff766-bb83-7d27-ae8a-9592b77b5862" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkFriendshipCorp.August2029Member_019ff766-bb83-71e7-bc95-91e356ce2ee0" xlink:href="panl-20260930.xsd#panl_BulkFriendshipCorp.August2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_BulkFriendshipCorp.August2029Member_019ff766-bb83-71e7-bc95-91e356ce2ee0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkNordicSevenLLCMay2036Member_019ff766-bb83-7d19-bc0b-697d770ea2f1" xlink:href="panl-20260930.xsd#panl_BulkNordicSevenLLCMay2036Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_BulkNordicSevenLLCMay2036Member_019ff766-bb83-7d19-bc0b-697d770ea2f1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkNordicEightLLCJune2036Member_019ff766-bb83-7548-8d97-28e114b665f6" xlink:href="panl-20260930.xsd#panl_BulkNordicEightLLCJune2036Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_BulkNordicEightLLCJune2036Member_019ff766-bb83-7548-8d97-28e114b665f6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkNordicNineLLCSeptember2036Member_019ff766-bb83-7d32-8635-60c117e6df0a" xlink:href="panl-20260930.xsd#panl_BulkNordicNineLLCSeptember2036Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_BulkNordicNineLLCSeptember2036Member_019ff766-bb83-7d32-8635-60c117e6df0a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkNordicTenLLCNovember2036Member_019ff766-bb83-7c77-8aeb-7b702176d25c" xlink:href="panl-20260930.xsd#panl_BulkNordicTenLLCNovember2036Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_BulkNordicTenLLCNovember2036Member_019ff766-bb83-7c77-8aeb-7b702176d25c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkCourageousCorpApril2028Member_019ff766-bb83-7b77-add0-3c5c789b158b" xlink:href="panl-20260930.xsd#panl_BulkCourageousCorpApril2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_BulkCourageousCorpApril2028Member_019ff766-bb83-7b77-add0-3c5c789b158b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PhoenixBulkFebruary2029Member_019ff766-bb83-7508-af11-0ac6d531af8c" xlink:href="panl-20260930.xsd#panl_PhoenixBulkFebruary2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_PhoenixBulkFebruary2029Member_019ff766-bb83-7508-af11-0ac6d531af8c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkIndependenceDecember2028Member_019ff766-bb83-78ec-be3e-48458566336c" xlink:href="panl-20260930.xsd#panl_BulkIndependenceDecember2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_BulkIndependenceDecember2028Member_019ff766-bb83-78ec-be3e-48458566336c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkPrideDecember2028Member_019ff766-bb83-744a-abc6-3da35c29a8e5" xlink:href="panl-20260930.xsd#panl_BulkPrideDecember2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_BulkPrideDecember2028Member_019ff766-bb83-744a-abc6-3da35c29a8e5" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_TripartiteAgreementJune2029Member_019ff766-bb83-7b2d-a5ca-71cc1f793bb4" xlink:href="panl-20260930.xsd#panl_TripartiteAgreementJune2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_TripartiteAgreementJune2029Member_019ff766-bb83-7b2d-a5ca-71cc1f793bb4" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_SBCEntityAugust3031Member_019ff766-bb83-7a4b-aa4b-41cf89aad139" xlink:href="panl-20260930.xsd#panl_SBCEntityAugust3031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_SBCEntityAugust3031Member_019ff766-bb83-7a4b-aa4b-41cf89aad139" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_SBCExplorerMarch2030Member_019ff766-bb83-7893-ad84-20c99a81e023" xlink:href="panl-20260930.xsd#panl_SBCExplorerMarch2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_SBCExplorerMarch2030Member_019ff766-bb83-7893-ad84-20c99a81e023" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_RHIFortitudeJanuary2031Member_019ff766-bb83-7774-b426-39cddc0f045a" xlink:href="panl-20260930.xsd#panl_RHIFortitudeJanuary2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_RHIFortitudeJanuary2031Member_019ff766-bb83-7774-b426-39cddc0f045a" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_SBCHarmonyAugust2031Member_019ff766-bb83-74a3-923b-5741a5bca24e" xlink:href="panl-20260930.xsd#panl_SBCHarmonyAugust2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_SBCHarmonyAugust2031Member_019ff766-bb83-74a3-923b-5741a5bca24e" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_RHISavannahSeptember2029Member_019ff766-bb83-7125-8e7e-f3acf433c180" xlink:href="panl-20260930.xsd#panl_RHISavannahSeptember2029Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_RHISavannahSeptember2029Member_019ff766-bb83-7125-8e7e-f3acf433c180" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_RHITenacityApril2027Member_019ff766-bb83-7015-abb5-627f21cfb812" xlink:href="panl-20260930.xsd#panl_RHITenacityApril2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_RHITenacityApril2027Member_019ff766-bb83-7015-abb5-627f21cfb812" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_SBCVentureJuly2031Member_019ff766-bb83-730f-95fe-44913a773318" xlink:href="panl-20260930.xsd#panl_SBCVentureJuly2031Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_SBCVentureJuly2031Member_019ff766-bb83-730f-95fe-44913a773318" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_SBCSpiritJuly2032Member_019ff766-bb83-7f5a-a8f3-272f189a2004" xlink:href="panl-20260930.xsd#panl_SBCSpiritJuly2032Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_SBCSpiritJuly2032Member_019ff766-bb83-7f5a-a8f3-272f189a2004" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_SBCVisionJune2030Member_019ff766-bb83-7a1f-9c62-ab5489bb526a" xlink:href="panl-20260930.xsd#panl_SBCVisionJune2030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7bce-984d-a93bef372f85" xlink:to="loc_panl_SBCVisionJune2030Member_019ff766-bb83-7a1f-9c62-ab5489bb526a" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_019ff766-bb83-72ae-831d-6b8e088b7f2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7ae6-aa1d-5fdde124d1c6" xlink:to="loc_us-gaap_DebtInstrumentAxis_019ff766-bb83-72ae-831d-6b8e088b7f2e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-72ae-831d-6b8e088b7f2e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_019ff766-bb83-72ae-831d-6b8e088b7f2e" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-72ae-831d-6b8e088b7f2e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-71dd-b3b8-6e7162e2d950" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_019ff766-bb83-72ae-831d-6b8e088b7f2e" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-71dd-b3b8-6e7162e2d950" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkNordicOasisLtd.LoanAgreementMember_019ff766-bb83-77a6-a261-b10863adf07f" xlink:href="panl-20260930.xsd#panl_BulkNordicOasisLtd.LoanAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-71dd-b3b8-6e7162e2d950" xlink:to="loc_panl_BulkNordicOasisLtd.LoanAgreementMember_019ff766-bb83-77a6-a261-b10863adf07f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkEnduranceLoanAgreementMember_019ff766-bb83-7a6e-8931-4532f2cdd2b1" xlink:href="panl-20260930.xsd#panl_BulkEnduranceLoanAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-71dd-b3b8-6e7162e2d950" xlink:to="loc_panl_BulkEnduranceLoanAgreementMember_019ff766-bb83-7a6e-8931-4532f2cdd2b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkValorCorpLoanAgreementMember_019ff766-bb83-70b0-9997-b44727e3c182" xlink:href="panl-20260930.xsd#panl_BulkValorCorpLoanAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-71dd-b3b8-6e7162e2d950" xlink:to="loc_panl_BulkValorCorpLoanAgreementMember_019ff766-bb83-70b0-9997-b44727e3c182" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkPromiseCorpLoanMember_019ff766-bb83-73d9-984d-bb4dd8144c42" xlink:href="panl-20260930.xsd#panl_BulkPromiseCorpLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-71dd-b3b8-6e7162e2d950" xlink:to="loc_panl_BulkPromiseCorpLoanMember_019ff766-bb83-73d9-984d-bb4dd8144c42" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkSachuestLoanAndSecurityAgreementMember_019ff766-bb83-7802-a530-3fe5304c5347" xlink:href="panl-20260930.xsd#panl_BulkSachuestLoanAndSecurityAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-71dd-b3b8-6e7162e2d950" xlink:to="loc_panl_BulkSachuestLoanAndSecurityAgreementMember_019ff766-bb83-7802-a530-3fe5304c5347" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_LongWharfConstructionToTermDebtMember_019ff766-bb83-77fd-b258-5ec07cb09b87" xlink:href="panl-20260930.xsd#panl_LongWharfConstructionToTermDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-71dd-b3b8-6e7162e2d950" xlink:to="loc_panl_LongWharfConstructionToTermDebtMember_019ff766-bb83-77fd-b258-5ec07cb09b87" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkNordicOshimaBulkNordicOdinNordicOlympicNordicOasisMember_019ff766-bb83-7bc7-b479-8f6ff252db4f" xlink:href="panl-20260930.xsd#panl_BulkNordicOshimaBulkNordicOdinNordicOlympicNordicOasisMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-71dd-b3b8-6e7162e2d950" xlink:to="loc_panl_BulkNordicOshimaBulkNordicOdinNordicOlympicNordicOasisMember_019ff766-bb83-7bc7-b479-8f6ff252db4f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkNordicOshimaLtdAmendedandRestatedLoanAgreementMember_019ff766-bb83-7827-a1c1-62eded56bb01" xlink:href="panl-20260930.xsd#panl_BulkNordicOshimaLtdAmendedandRestatedLoanAgreementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-71dd-b3b8-6e7162e2d950" xlink:to="loc_panl_BulkNordicOshimaLtdAmendedandRestatedLoanAgreementMember_019ff766-bb83-7827-a1c1-62eded56bb01" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PangeaTexasLLCMember_019ff766-bb83-7165-8f96-079ec6897cab" xlink:href="panl-20260930.xsd#panl_PangeaTexasLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-71dd-b3b8-6e7162e2d950" xlink:to="loc_panl_PangeaTexasLLCMember_019ff766-bb83-7165-8f96-079ec6897cab" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PangeaBaltimoreLLCMember_019ff766-bb83-7cea-8637-25299c10216c" xlink:href="panl-20260930.xsd#panl_PangeaBaltimoreLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-71dd-b3b8-6e7162e2d950" xlink:to="loc_panl_PangeaBaltimoreLLCMember_019ff766-bb83-7cea-8637-25299c10216c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PangaeaFloridaLLCMember_019ff766-bb83-7345-aa4e-15a4fba3694b" xlink:href="panl-20260930.xsd#panl_PangaeaFloridaLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_019ff766-bb83-71dd-b3b8-6e7162e2d950" xlink:to="loc_panl_PangaeaFloridaLLCMember_019ff766-bb83-7345-aa4e-15a4fba3694b" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_019ff766-bb83-7201-b197-338dc74aad0d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-7ae6-aa1d-5fdde124d1c6" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_019ff766-bb83-7201-b197-338dc74aad0d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-7201-b197-338dc74aad0d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019ff766-bb83-7201-b197-338dc74aad0d" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-7201-b197-338dc74aad0d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-73ce-bc9c-ca09351369e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_019ff766-bb83-7201-b197-338dc74aad0d" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-73ce-bc9c-ca09351369e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_019ff766-bb83-712e-8a71-eb59c7d8d3e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_019ff766-bb83-73ce-bc9c-ca09351369e8" xlink:to="loc_us-gaap_SecuredDebtMember_019ff766-bb83-712e-8a71-eb59c7d8d3e8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_019ff766-bb83-7e82-9441-7a50b2c4da48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-75ae-bc0b-30ff3d92fb94" xlink:to="loc_us-gaap_FinanceLeaseLiability_019ff766-bb83-7e82-9441-7a50b2c4da48" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeFinanceLeaseDiscountRate_019ff766-bb83-79b6-b461-a8a59607cad0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeFinanceLeaseDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-75ae-bc0b-30ff3d92fb94" xlink:to="loc_us-gaap_LesseeFinanceLeaseDiscountRate_019ff766-bb83-79b6-b461-a8a59607cad0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_019ff766-bb83-7bec-b9b3-8e1fe8ab3854" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-75ae-bc0b-30ff3d92fb94" xlink:to="loc_us-gaap_OperatingLeaseLiability_019ff766-bb83-7bec-b9b3-8e1fe8ab3854" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019ff766-bb83-7019-99cb-a72b211bb2ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-75ae-bc0b-30ff3d92fb94" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019ff766-bb83-7019-99cb-a72b211bb2ad" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnamortizedDebtIssuanceExpense_019ff766-bb83-77ac-9d5b-96a7d04e9deb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnamortizedDebtIssuanceExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-75ae-bc0b-30ff3d92fb94" xlink:to="loc_us-gaap_UnamortizedDebtIssuanceExpense_019ff766-bb83-77ac-9d5b-96a7d04e9deb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_LongTermDebtAndLeaseObligationNetOfUnamortizedIssuanceExpense_019ff766-bb83-783b-904d-4505bf105721" xlink:href="panl-20260930.xsd#panl_LongTermDebtAndLeaseObligationNetOfUnamortizedIssuanceExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-75ae-bc0b-30ff3d92fb94" xlink:to="loc_panl_LongTermDebtAndLeaseObligationNetOfUnamortizedIssuanceExpense_019ff766-bb83-783b-904d-4505bf105721" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_019ff766-bb83-7ad7-bfab-903204eaca26" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-75ae-bc0b-30ff3d92fb94" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_019ff766-bb83-7ad7-bfab-903204eaca26" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractualObligation_019ff766-bb83-71e1-8412-7337c2d83c08" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractualObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-75ae-bc0b-30ff3d92fb94" xlink:to="loc_us-gaap_ContractualObligation_019ff766-bb83-71e1-8412-7337c2d83c08" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_019ff766-bb83-7ecc-8610-ed21d2f56267" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-75ae-bc0b-30ff3d92fb94" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019ff766-bb83-7ecc-8610-ed21d2f56267" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019ff766-bb83-7a9d-acf1-3e5c834ec9d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-75ae-bc0b-30ff3d92fb94" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_019ff766-bb83-7a9d-acf1-3e5c834ec9d3" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/DebtScheduleofFutureMinimumLeasePaymentsDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#DebtScheduleofFutureMinimumLeasePaymentsDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/DebtScheduleofFutureMinimumLeasePaymentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-71f6-baf6-1b753927d262" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:to="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-71f6-baf6-1b753927d262" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FinancingObligationAxis_019ff766-bb83-7955-9640-d11c400a3c52" xlink:href="panl-20260930.xsd#panl_FinancingObligationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_019ff766-bb83-71f6-baf6-1b753927d262" xlink:to="loc_panl_FinancingObligationAxis_019ff766-bb83-7955-9640-d11c400a3c52" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FinancingObligationDomain_019ff766-bb83-7955-9640-d11c400a3c52_default" xlink:href="panl-20260930.xsd#panl_FinancingObligationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_panl_FinancingObligationAxis_019ff766-bb83-7955-9640-d11c400a3c52" xlink:to="loc_panl_FinancingObligationDomain_019ff766-bb83-7955-9640-d11c400a3c52_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FinancingObligationDomain_019ff766-bb83-7dc9-90cf-f3e85ecd50d4" xlink:href="panl-20260930.xsd#panl_FinancingObligationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_panl_FinancingObligationAxis_019ff766-bb83-7955-9640-d11c400a3c52" xlink:to="loc_panl_FinancingObligationDomain_019ff766-bb83-7dc9-90cf-f3e85ecd50d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FinancingObligationUnderASC842RemainderOfFiscalYearMember_019ff766-bb83-7732-b244-ea0b58ae6a42" xlink:href="panl-20260930.xsd#panl_FinancingObligationUnderASC842RemainderOfFiscalYearMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_panl_FinancingObligationDomain_019ff766-bb83-7dc9-90cf-f3e85ecd50d4" xlink:to="loc_panl_FinancingObligationUnderASC842RemainderOfFiscalYearMember_019ff766-bb83-7732-b244-ea0b58ae6a42" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FinancingObligationUnderASC842YearOneMember_019ff766-bb83-7c7c-8c08-dbf81b3c95f9" xlink:href="panl-20260930.xsd#panl_FinancingObligationUnderASC842YearOneMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_panl_FinancingObligationDomain_019ff766-bb83-7dc9-90cf-f3e85ecd50d4" xlink:to="loc_panl_FinancingObligationUnderASC842YearOneMember_019ff766-bb83-7c7c-8c08-dbf81b3c95f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FinancingObligationUnderASC842YearTwoMember_019ff766-bb83-772d-bc1e-42684e39143a" xlink:href="panl-20260930.xsd#panl_FinancingObligationUnderASC842YearTwoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_panl_FinancingObligationDomain_019ff766-bb83-7dc9-90cf-f3e85ecd50d4" xlink:to="loc_panl_FinancingObligationUnderASC842YearTwoMember_019ff766-bb83-772d-bc1e-42684e39143a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FinancingObligationUnderASC842YearThreeMember_019ff766-bb83-7da9-b498-32afeae2dcd7" xlink:href="panl-20260930.xsd#panl_FinancingObligationUnderASC842YearThreeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_panl_FinancingObligationDomain_019ff766-bb83-7dc9-90cf-f3e85ecd50d4" xlink:to="loc_panl_FinancingObligationUnderASC842YearThreeMember_019ff766-bb83-7da9-b498-32afeae2dcd7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FinancingObligationUnderASC842YearFourMember_019ff766-bb83-7920-b167-9b6240901718" xlink:href="panl-20260930.xsd#panl_FinancingObligationUnderASC842YearFourMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_panl_FinancingObligationDomain_019ff766-bb83-7dc9-90cf-f3e85ecd50d4" xlink:to="loc_panl_FinancingObligationUnderASC842YearFourMember_019ff766-bb83-7920-b167-9b6240901718" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FinancingObligationUnderASC842AfterYearFourMember_019ff766-bb83-7833-8c12-0a4aa3cbb861" xlink:href="panl-20260930.xsd#panl_FinancingObligationUnderASC842AfterYearFourMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_panl_FinancingObligationDomain_019ff766-bb83-7dc9-90cf-f3e85ecd50d4" xlink:to="loc_panl_FinancingObligationUnderASC842AfterYearFourMember_019ff766-bb83-7833-8c12-0a4aa3cbb861" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_019ff766-bb83-7809-836a-cefc64aaf25a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_019ff766-bb83-7809-836a-cefc64aaf25a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_019ff766-bb83-7b84-8d93-f70251925f7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_019ff766-bb83-7b84-8d93-f70251925f7c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_019ff766-bb83-787f-ab02-49223037798b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_019ff766-bb83-787f-ab02-49223037798b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_019ff766-bb83-7cd7-a2c2-281233ce0d4d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_019ff766-bb83-7cd7-a2c2-281233ce0d4d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_019ff766-bb83-747f-b730-86e655c1492f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_019ff766-bb83-747f-b730-86e655c1492f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FinanceLeaseLiabilityToBePaidAfterYearFour_019ff766-bb83-7ce2-9761-7f1ea3191b91" xlink:href="panl-20260930.xsd#panl_FinanceLeaseLiabilityToBePaidAfterYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:to="loc_panl_FinanceLeaseLiabilityToBePaidAfterYearFour_019ff766-bb83-7ce2-9761-7f1ea3191b91" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_LongTermDebtAndFinanceLeaseObligation_019ff766-bb83-7277-8cdd-b79127ca52d1" xlink:href="panl-20260930.xsd#panl_LongTermDebtAndFinanceLeaseObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:to="loc_panl_LongTermDebtAndFinanceLeaseObligation_019ff766-bb83-7277-8cdd-b79127ca52d1" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FinanceLeaseLiabilityInterestCosts_019ff766-bb83-77f6-9ca9-cf17c68dbb1d" xlink:href="panl-20260930.xsd#panl_FinanceLeaseLiabilityInterestCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:to="loc_panl_FinanceLeaseLiabilityInterestCosts_019ff766-bb83-77f6-9ca9-cf17c68dbb1d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019ff766-bb83-7d55-a489-c0947cc52faa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_019ff766-bb83-7d55-a489-c0947cc52faa" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsGross_019ff766-bb83-772e-8924-37ecac01e17b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredFinanceCostsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:to="loc_us-gaap_DeferredFinanceCostsGross_019ff766-bb83-772e-8924-37ecac01e17b" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_LongTermDebtAndLeaseObligationNetOfUnamortizedIssuanceExpense_019ff766-bb83-727e-acb0-4d682403e89b" xlink:href="panl-20260930.xsd#panl_LongTermDebtAndLeaseObligationNetOfUnamortizedIssuanceExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:to="loc_panl_LongTermDebtAndLeaseObligationNetOfUnamortizedIssuanceExpense_019ff766-bb83-727e-acb0-4d682403e89b" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_019ff766-bb83-74e5-9ca8-c40d250aa360" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_019ff766-bb83-74e5-9ca8-c40d250aa360" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractualObligation_019ff766-bb83-7ad8-9558-06ef132cfb49" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractualObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_019ff766-bb83-7189-8596-2009e13b361f" xlink:to="loc_us-gaap_ContractualObligation_019ff766-bb83-7ad8-9558-06ef132cfb49" xlink:type="arc" order="12"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/FinanceLeasesScheduleofFinanceLeasesDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#FinanceLeasesScheduleofFinanceLeasesDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/FinanceLeasesScheduleofFinanceLeasesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_019ff766-bb83-77e8-b62e-07a654024f6c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_019ff766-bb83-73c7-b582-03bc5a318422" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019ff766-bb83-77e8-b62e-07a654024f6c" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_019ff766-bb83-73c7-b582-03bc5a318422" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermAxis_019ff766-bb83-7fd5-bd97-344f6c9ee659" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseContractualTermAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_019ff766-bb83-73c7-b582-03bc5a318422" xlink:to="loc_us-gaap_LeaseContractualTermAxis_019ff766-bb83-7fd5-bd97-344f6c9ee659" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7fd5-bd97-344f6c9ee659_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseContractualTermDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LeaseContractualTermAxis_019ff766-bb83-7fd5-bd97-344f6c9ee659" xlink:to="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7fd5-bd97-344f6c9ee659_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7ef8-adc3-25696ca4736f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseContractualTermDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LeaseContractualTermAxis_019ff766-bb83-7fd5-bd97-344f6c9ee659" xlink:to="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7ef8-adc3-25696ca4736f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkPODSLtdDecember2027Member_019ff766-bb83-7abd-adea-074147a04417" xlink:href="panl-20260930.xsd#panl_BulkPODSLtdDecember2027Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7ef8-adc3-25696ca4736f" xlink:to="loc_panl_BulkPODSLtdDecember2027Member_019ff766-bb83-7abd-adea-074147a04417" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_BulkNordicFiveLtdApril2028Member_019ff766-bb83-70ab-9a91-3264e5835a81" xlink:href="panl-20260930.xsd#panl_BulkNordicFiveLtdApril2028Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_019ff766-bb83-7ef8-adc3-25696ca4736f" xlink:to="loc_panl_BulkNordicFiveLtdApril2028Member_019ff766-bb83-70ab-9a91-3264e5835a81" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_019ff766-bb83-7d27-87ad-c4df52953d28" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019ff766-bb83-77e8-b62e-07a654024f6c" xlink:to="loc_us-gaap_FinanceLeaseLiability_019ff766-bb83-7d27-87ad-c4df52953d28" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FinanceLeaseLiabilityIssuanceCosts_019ff766-bb83-73e1-ac10-c65753fd336a" xlink:href="panl-20260930.xsd#panl_FinanceLeaseLiabilityIssuanceCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019ff766-bb83-77e8-b62e-07a654024f6c" xlink:to="loc_panl_FinanceLeaseLiabilityIssuanceCosts_019ff766-bb83-73e1-ac10-c65753fd336a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FinanceLeaseLiabilityNet_019ff766-bb83-7770-ac2e-25a934df8a2e" xlink:href="panl-20260930.xsd#panl_FinanceLeaseLiabilityNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019ff766-bb83-77e8-b62e-07a654024f6c" xlink:to="loc_panl_FinanceLeaseLiabilityNet_019ff766-bb83-7770-ac2e-25a934df8a2e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_019ff766-bb83-73b8-8222-ddffeb6eff08" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019ff766-bb83-77e8-b62e-07a654024f6c" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_019ff766-bb83-73b8-8222-ddffeb6eff08" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_019ff766-bb83-7495-bb34-16d40655cfb1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019ff766-bb83-77e8-b62e-07a654024f6c" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_019ff766-bb83-7495-bb34-16d40655cfb1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeFinanceLeaseDiscountRate_019ff766-bb83-760c-9ae5-a7379dfb3e16" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeFinanceLeaseDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019ff766-bb83-77e8-b62e-07a654024f6c" xlink:to="loc_us-gaap_LesseeFinanceLeaseDiscountRate_019ff766-bb83-760c-9ae5-a7379dfb3e16" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PaymentsForExerciseOfFinanceLeasePurchaseOption_019ff766-bb83-7dba-bd4a-baa6b0102500" xlink:href="panl-20260930.xsd#panl_PaymentsForExerciseOfFinanceLeasePurchaseOption"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_019ff766-bb83-77e8-b62e-07a654024f6c" xlink:to="loc_panl_PaymentsForExerciseOfFinanceLeasePurchaseOption_019ff766-bb83-7dba-bd4a-baa6b0102500" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/DerivativeInstrumentsandFairValueMeasurementsScheduleofDerivativeInstrumentsDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#DerivativeInstrumentsandFairValueMeasurementsScheduleofDerivativeInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/DerivativeInstrumentsandFairValueMeasurementsScheduleofDerivativeInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_019ff766-bb83-7d05-a070-dd858ed1b0a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019ff766-bb83-7b82-8ecb-33431a56694b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019ff766-bb83-7d05-a070-dd858ed1b0a6" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019ff766-bb83-7b82-8ecb-33431a56694b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019ff766-bb83-7fb1-b7fe-a96e85ba3b00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019ff766-bb83-7b82-8ecb-33431a56694b" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019ff766-bb83-7fb1-b7fe-a96e85ba3b00" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7fb1-b7fe-a96e85ba3b00_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019ff766-bb83-7fb1-b7fe-a96e85ba3b00" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7fb1-b7fe-a96e85ba3b00_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7499-914a-d7413d1e1bbe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019ff766-bb83-7fb1-b7fe-a96e85ba3b00" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7499-914a-d7413d1e1bbe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MarginAccountsMember_019ff766-bb83-7cbf-ba4b-e0d169d88eef" xlink:href="panl-20260930.xsd#panl_MarginAccountsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7499-914a-d7413d1e1bbe" xlink:to="loc_panl_MarginAccountsMember_019ff766-bb83-7cbf-ba4b-e0d169d88eef" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_ForwardFreightAgreementsMember_019ff766-bb83-7069-9930-a25d147962d7" xlink:href="panl-20260930.xsd#panl_ForwardFreightAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7499-914a-d7413d1e1bbe" xlink:to="loc_panl_ForwardFreightAgreementsMember_019ff766-bb83-7069-9930-a25d147962d7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_FuelSwapContractMember_019ff766-bb83-7505-81a9-ccf6a9a70df1" xlink:href="panl-20260930.xsd#panl_FuelSwapContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7499-914a-d7413d1e1bbe" xlink:to="loc_panl_FuelSwapContractMember_019ff766-bb83-7505-81a9-ccf6a9a70df1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateCapMember_019ff766-bb83-7c43-9561-59250ff88977" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateCapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7499-914a-d7413d1e1bbe" xlink:to="loc_us-gaap_InterestRateCapMember_019ff766-bb83-7c43-9561-59250ff88977" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnergyRelatedDerivativeMember_019ff766-bb83-745f-82ad-a6768df96c57" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EnergyRelatedDerivativeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7499-914a-d7413d1e1bbe" xlink:to="loc_us-gaap_EnergyRelatedDerivativeMember_019ff766-bb83-745f-82ad-a6768df96c57" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019ff766-bb83-7b79-ac09-cb3471975c50" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019ff766-bb83-7b82-8ecb-33431a56694b" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019ff766-bb83-7b79-ac09-cb3471975c50" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019ff766-bb83-7b79-ac09-cb3471975c50_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019ff766-bb83-7b79-ac09-cb3471975c50" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019ff766-bb83-7b79-ac09-cb3471975c50_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019ff766-bb83-7dcb-8347-b21f9b1d3611" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019ff766-bb83-7b79-ac09-cb3471975c50" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019ff766-bb83-7dcb-8347-b21f9b1d3611" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019ff766-bb83-7637-85e0-7c87ba2c1a85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019ff766-bb83-7dcb-8347-b21f9b1d3611" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019ff766-bb83-7637-85e0-7c87ba2c1a85" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019ff766-bb83-7401-a866-9c3030d91d24" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019ff766-bb83-7dcb-8347-b21f9b1d3611" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019ff766-bb83-7401-a866-9c3030d91d24" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetNotionalAmount_019ff766-bb83-7208-8ba9-c11ee23d7dc2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019ff766-bb83-7d05-a070-dd858ed1b0a6" xlink:to="loc_us-gaap_DerivativeAssetNotionalAmount_019ff766-bb83-7208-8ba9-c11ee23d7dc2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityNotionalAmount_019ff766-bb83-7d14-bf94-597490c014b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilityNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019ff766-bb83-7d05-a070-dd858ed1b0a6" xlink:to="loc_us-gaap_DerivativeLiabilityNotionalAmount_019ff766-bb83-7d14-bf94-597490c014b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_019ff766-bb83-7895-b569-0143cc80d73a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019ff766-bb83-7d05-a070-dd858ed1b0a6" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_019ff766-bb83-7895-b569-0143cc80d73a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossOnDerivatives_019ff766-bb83-7653-bee6-ac1c15f811b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrealizedGainLossOnDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019ff766-bb83-7d05-a070-dd858ed1b0a6" xlink:to="loc_us-gaap_UnrealizedGainLossOnDerivatives_019ff766-bb83-7653-bee6-ac1c15f811b3" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/DerivativeInstrumentsandFairValueMeasurementsUnrealizedGainLossonDerivativeInstrumentsDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#DerivativeInstrumentsandFairValueMeasurementsUnrealizedGainLossonDerivativeInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/DerivativeInstrumentsandFairValueMeasurementsUnrealizedGainLossonDerivativeInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019ff766-bb83-74a0-8b26-bff22ab6dcc8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019ff766-bb83-7c0c-8b1e-b268e415bd00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019ff766-bb83-74a0-8b26-bff22ab6dcc8" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019ff766-bb83-7c0c-8b1e-b268e415bd00" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019ff766-bb83-7e82-9417-c4784d9d5a58" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019ff766-bb83-7c0c-8b1e-b268e415bd00" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019ff766-bb83-7e82-9417-c4784d9d5a58" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7e82-9417-c4784d9d5a58_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019ff766-bb83-7e82-9417-c4784d9d5a58" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7e82-9417-c4784d9d5a58_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7b28-8195-9008029502d5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019ff766-bb83-7e82-9417-c4784d9d5a58" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7b28-8195-9008029502d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_ForwardFreightAgreementsMember_019ff766-bb83-7229-bb1d-60626ae4ef6f" xlink:href="panl-20260930.xsd#panl_ForwardFreightAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7b28-8195-9008029502d5" xlink:to="loc_panl_ForwardFreightAgreementsMember_019ff766-bb83-7229-bb1d-60626ae4ef6f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnergyRelatedDerivativeMember_019ff766-bb83-73e0-8163-5ae59fc01a39" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EnergyRelatedDerivativeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7b28-8195-9008029502d5" xlink:to="loc_us-gaap_EnergyRelatedDerivativeMember_019ff766-bb83-73e0-8163-5ae59fc01a39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateCapMember_019ff766-bb83-74d5-abaf-8864a452ab18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateCapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019ff766-bb83-7b28-8195-9008029502d5" xlink:to="loc_us-gaap_InterestRateCapMember_019ff766-bb83-74d5-abaf-8864a452ab18" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossOnDerivatives_019ff766-bb83-7566-ad45-558f2ba61618" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrealizedGainLossOnDerivatives"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019ff766-bb83-74a0-8b26-bff22ab6dcc8" xlink:to="loc_us-gaap_UnrealizedGainLossOnDerivatives_019ff766-bb83-7566-ad45-558f2ba61618" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_01a19cf4-dadb-7a7f-a3cd-fbf1f658cea7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019ff766-bb83-74a0-8b26-bff22ab6dcc8" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_01a19cf4-dadb-7a7f-a3cd-fbf1f658cea7" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/RelatedPartyTransactionsAdditionalInformationDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#RelatedPartyTransactionsAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/RelatedPartyTransactionsAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_019ff766-bb83-7f9b-95c3-a498336cb557" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019ff766-bb83-789a-8129-09acfb5277bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019ff766-bb83-7f9b-95c3-a498336cb557" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019ff766-bb83-789a-8129-09acfb5277bd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_019ff766-bb83-7647-bd13-1fe84593c799" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019ff766-bb83-789a-8129-09acfb5277bd" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_019ff766-bb83-7647-bd13-1fe84593c799" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_019ff766-bb83-7647-bd13-1fe84593c799_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_019ff766-bb83-7647-bd13-1fe84593c799" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_019ff766-bb83-7647-bd13-1fe84593c799_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_019ff766-bb83-7ee9-96af-247fc1af5cb4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_019ff766-bb83-7647-bd13-1fe84593c799" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_019ff766-bb83-7ee9-96af-247fc1af5cb4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_MTMShipManagementMember_019ff766-bb83-711a-985b-924616aab83b" xlink:href="panl-20260930.xsd#panl_MTMShipManagementMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_019ff766-bb83-7ee9-96af-247fc1af5cb4" xlink:to="loc_panl_MTMShipManagementMember_019ff766-bb83-711a-985b-924616aab83b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019ff766-bb83-71e3-a27f-8857b7c019fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019ff766-bb83-789a-8129-09acfb5277bd" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019ff766-bb83-71e3-a27f-8857b7c019fa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019ff766-bb83-71e3-a27f-8857b7c019fa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019ff766-bb83-71e3-a27f-8857b7c019fa" xlink:to="loc_us-gaap_RelatedPartyDomain_019ff766-bb83-71e3-a27f-8857b7c019fa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_019ff766-bb83-7416-93dd-aa5e061c839d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_019ff766-bb83-71e3-a27f-8857b7c019fa" xlink:to="loc_us-gaap_RelatedPartyDomain_019ff766-bb83-7416-93dd-aa5e061c839d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_019ff766-bb83-7f54-aaba-f79237e3108d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_019ff766-bb83-7416-93dd-aa5e061c839d" xlink:to="loc_us-gaap_RelatedPartyMember_019ff766-bb83-7f54-aaba-f79237e3108d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_019ff766-bb83-72e0-a369-f254fe8bc6b1" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019ff766-bb83-789a-8129-09acfb5277bd" xlink:to="loc_srt_OwnershipAxis_019ff766-bb83-72e0-a369-f254fe8bc6b1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_019ff766-bb83-72e0-a369-f254fe8bc6b1_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_019ff766-bb83-72e0-a369-f254fe8bc6b1" xlink:to="loc_srt_OwnershipDomain_019ff766-bb83-72e0-a369-f254fe8bc6b1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_019ff766-bb83-77af-80b8-dd5aed6187d0" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_019ff766-bb83-72e0-a369-f254fe8bc6b1" xlink:to="loc_srt_OwnershipDomain_019ff766-bb83-77af-80b8-dd5aed6187d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PangaeaMember_019ff766-bb83-7214-9e30-c73e23757038" xlink:href="panl-20260930.xsd#panl_PangaeaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_019ff766-bb83-77af-80b8-dd5aed6187d0" xlink:to="loc_panl_PangaeaMember_019ff766-bb83-7214-9e30-c73e23757038" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_019ff766-bb83-762a-9023-5ff5c1be3404" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_019ff766-bb83-789a-8129-09acfb5277bd" xlink:to="loc_dei_LegalEntityAxis_019ff766-bb83-762a-9023-5ff5c1be3404" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019ff766-bb83-762a-9023-5ff5c1be3404_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_019ff766-bb83-762a-9023-5ff5c1be3404" xlink:to="loc_dei_EntityDomain_019ff766-bb83-762a-9023-5ff5c1be3404_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019ff766-bb83-7359-8774-a96b1ebe01e0" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_019ff766-bb83-762a-9023-5ff5c1be3404" xlink:to="loc_dei_EntityDomain_019ff766-bb83-7359-8774-a96b1ebe01e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_StrategicInvestmentLLCMember_019ff766-bb83-76e9-8cf6-6a1aa8327159" xlink:href="panl-20260930.xsd#panl_StrategicInvestmentLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019ff766-bb83-7359-8774-a96b1ebe01e0" xlink:to="loc_panl_StrategicInvestmentLLCMember_019ff766-bb83-76e9-8cf6-6a1aa8327159" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_TechnicalManagementFees_019ff766-bb83-7786-945b-a1982128362a" xlink:href="panl-20260930.xsd#panl_TechnicalManagementFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019ff766-bb83-7f9b-95c3-a498336cb557" xlink:to="loc_panl_TechnicalManagementFees_019ff766-bb83-7786-945b-a1982128362a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_019ff766-bb83-7d24-8b66-ec9f24b35d7e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterestOwnershipPercentageByParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_019ff766-bb83-7f9b-95c3-a498336cb557" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_019ff766-bb83-7d24-8b66-ec9f24b35d7e" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/RelatedPartyTransactionsScheduleofRelatedPartyTransactionsDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#RelatedPartyTransactionsScheduleofRelatedPartyTransactionsDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/RelatedPartyTransactionsScheduleofRelatedPartyTransactionsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_01a19cf7-bf39-715b-9dba-13298335bf9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a19cf7-bf39-710b-856b-0f0cf5725e8e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a19cf7-bf39-715b-9dba-13298335bf9c" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a19cf7-bf39-710b-856b-0f0cf5725e8e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a19cf7-bf39-737c-a267-e9fad4b2b33d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_01a19cf7-bf39-710b-856b-0f0cf5725e8e" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a19cf7-bf39-737c-a267-e9fad4b2b33d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_01a19cf7-bf39-737c-a267-e9fad4b2b33d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a19cf7-bf39-737c-a267-e9fad4b2b33d" xlink:to="loc_us-gaap_RelatedPartyDomain_01a19cf7-bf39-737c-a267-e9fad4b2b33d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_01a19cf7-bf39-76ad-96bf-0f2286340ab0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_01a19cf7-bf39-737c-a267-e9fad4b2b33d" xlink:to="loc_us-gaap_RelatedPartyDomain_01a19cf7-bf39-76ad-96bf-0f2286340ab0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyMember_01a19cf7-bf39-792e-b13d-95ecc3fa64d1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RelatedPartyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_01a19cf7-bf39-76ad-96bf-0f2286340ab0" xlink:to="loc_us-gaap_RelatedPartyMember_01a19cf7-bf39-792e-b13d-95ecc3fa64d1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_RelatedPartyTransactionsRollForward_01a19cf9-05fe-7808-b96d-52f164efa118" xlink:href="panl-20260930.xsd#panl_RelatedPartyTransactionsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_01a19cf7-bf39-715b-9dba-13298335bf9c" xlink:to="loc_panl_RelatedPartyTransactionsRollForward_01a19cf9-05fe-7808-b96d-52f164efa118" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableTradeCurrent_01a19cf7-bf39-7c37-9597-8ce54ad6ba0a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableTradeCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_panl_RelatedPartyTransactionsRollForward_01a19cf9-05fe-7808-b96d-52f164efa118" xlink:to="loc_us-gaap_AccountsPayableTradeCurrent_01a19cf7-bf39-7c37-9597-8ce54ad6ba0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableTrade_01a19cf7-bf39-76a8-a68d-1b0139ecb372" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsPayableTrade"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_panl_RelatedPartyTransactionsRollForward_01a19cf9-05fe-7808-b96d-52f164efa118" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableTrade_01a19cf7-bf39-76a8-a68d-1b0139ecb372" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableTradeCurrent_01a19cf8-3b01-7c3a-acd5-cdbeb281d50e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableTradeCurrent"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/CommitmentsandContingenciesNarrativeDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#CommitmentsandContingenciesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/CommitmentsandContingenciesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsLineItems_019ff766-bb83-7bc9-bec2-09aa6b175a85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsTable_019ff766-bb83-78aa-b951-ed55e9346d07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019ff766-bb83-7bc9-bec2-09aa6b175a85" xlink:to="loc_us-gaap_OtherCommitmentsTable_019ff766-bb83-78aa-b951-ed55e9346d07" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019ff766-bb83-790e-9f0d-d1ccdde3f55a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019ff766-bb83-78aa-b951-ed55e9346d07" xlink:to="loc_srt_RangeAxis_019ff766-bb83-790e-9f0d-d1ccdde3f55a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019ff766-bb83-790e-9f0d-d1ccdde3f55a_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019ff766-bb83-790e-9f0d-d1ccdde3f55a" xlink:to="loc_srt_RangeMember_019ff766-bb83-790e-9f0d-d1ccdde3f55a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019ff766-bb83-76fb-a86c-fd2135bc1770" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019ff766-bb83-790e-9f0d-d1ccdde3f55a" xlink:to="loc_srt_RangeMember_019ff766-bb83-76fb-a86c-fd2135bc1770" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019ff766-bb83-7e9c-9d50-5466ab812678" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019ff766-bb83-76fb-a86c-fd2135bc1770" xlink:to="loc_srt_MinimumMember_019ff766-bb83-7e9c-9d50-5466ab812678" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019ff766-bb83-75fd-8eea-63aa36fe830b" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019ff766-bb83-76fb-a86c-fd2135bc1770" xlink:to="loc_srt_MaximumMember_019ff766-bb83-75fd-8eea-63aa36fe830b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_019ff766-bb83-75a7-bb30-72ea18d6e93d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019ff766-bb83-78aa-b951-ed55e9346d07" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_019ff766-bb83-75a7-bb30-72ea18d6e93d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019ff766-bb83-7b0b-a93d-74aee54e076e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019ff766-bb83-78aa-b951-ed55e9346d07" xlink:to="loc_srt_StatementGeographicalAxis_019ff766-bb83-7b0b-a93d-74aee54e076e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7b0b-a93d-74aee54e076e_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_019ff766-bb83-7b0b-a93d-74aee54e076e" xlink:to="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7b0b-a93d-74aee54e076e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7f38-9bbd-e1a48866da2c" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_019ff766-bb83-7b0b-a93d-74aee54e076e" xlink:to="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7f38-9bbd-e1a48866da2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_GR_019ff766-bb83-78af-a3c4-063253af6293" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_GR"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7f38-9bbd-e1a48866da2c" xlink:to="loc_country_GR_019ff766-bb83-78af-a3c4-063253af6293" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseRemainingLeaseTerm_019ff766-bb83-7a53-aa96-20a7a05478eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseRemainingLeaseTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019ff766-bb83-7bc9-bec2-09aa6b175a85" xlink:to="loc_us-gaap_LesseeOperatingLeaseRemainingLeaseTerm_019ff766-bb83-7a53-aa96-20a7a05478eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_019ff766-bb83-7ee2-838d-9791c01b6cd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019ff766-bb83-7bc9-bec2-09aa6b175a85" xlink:to="loc_us-gaap_OperatingLeaseCost_019ff766-bb83-7ee2-838d-9791c01b6cd4" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/CommitmentsandContingenciesNarrativeDetails_1" xlink:type="simple" xlink:href="panl-20260930.xsd#CommitmentsandContingenciesNarrativeDetails_1"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/CommitmentsandContingenciesNarrativeDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsLineItems_019ff766-bb83-7bc9-bec2-09aa6b175a85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsTable_019ff766-bb83-78aa-b951-ed55e9346d07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019ff766-bb83-7bc9-bec2-09aa6b175a85" xlink:to="loc_us-gaap_OtherCommitmentsTable_019ff766-bb83-78aa-b951-ed55e9346d07" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019ff766-bb83-790e-9f0d-d1ccdde3f55a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019ff766-bb83-78aa-b951-ed55e9346d07" xlink:to="loc_srt_RangeAxis_019ff766-bb83-790e-9f0d-d1ccdde3f55a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019ff766-bb83-790e-9f0d-d1ccdde3f55a_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019ff766-bb83-790e-9f0d-d1ccdde3f55a" xlink:to="loc_srt_RangeMember_019ff766-bb83-790e-9f0d-d1ccdde3f55a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019ff766-bb83-76fb-a86c-fd2135bc1770" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019ff766-bb83-790e-9f0d-d1ccdde3f55a" xlink:to="loc_srt_RangeMember_019ff766-bb83-76fb-a86c-fd2135bc1770" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019ff766-bb83-7e9c-9d50-5466ab812678" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019ff766-bb83-76fb-a86c-fd2135bc1770" xlink:to="loc_srt_MinimumMember_019ff766-bb83-7e9c-9d50-5466ab812678" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019ff766-bb83-75fd-8eea-63aa36fe830b" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019ff766-bb83-76fb-a86c-fd2135bc1770" xlink:to="loc_srt_MaximumMember_019ff766-bb83-75fd-8eea-63aa36fe830b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019ff766-bb83-7b0b-a93d-74aee54e076e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019ff766-bb83-78aa-b951-ed55e9346d07" xlink:to="loc_srt_StatementGeographicalAxis_019ff766-bb83-7b0b-a93d-74aee54e076e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7b0b-a93d-74aee54e076e_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_019ff766-bb83-7b0b-a93d-74aee54e076e" xlink:to="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7b0b-a93d-74aee54e076e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7f38-9bbd-e1a48866da2c" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_019ff766-bb83-7b0b-a93d-74aee54e076e" xlink:to="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7f38-9bbd-e1a48866da2c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_GR_019ff766-bb83-78af-a3c4-063253af6293" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_GR"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7f38-9bbd-e1a48866da2c" xlink:to="loc_country_GR_019ff766-bb83-78af-a3c4-063253af6293" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseRemainingLeaseTerm_019ff766-bb83-7a53-aa96-20a7a05478eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseRemainingLeaseTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019ff766-bb83-7bc9-bec2-09aa6b175a85" xlink:to="loc_us-gaap_LesseeOperatingLeaseRemainingLeaseTerm_019ff766-bb83-7a53-aa96-20a7a05478eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_019ff766-bb83-7ee2-838d-9791c01b6cd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019ff766-bb83-7bc9-bec2-09aa6b175a85" xlink:to="loc_us-gaap_OperatingLeaseCost_019ff766-bb83-7ee2-838d-9791c01b6cd4" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/CommitmentandContingenciesScheduleofLeaseCommitmentsDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#CommitmentandContingenciesScheduleofLeaseCommitmentsDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/CommitmentandContingenciesScheduleofLeaseCommitmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsLineItems_019ff766-bb83-7e61-b00d-cbc489207462" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsTable_019ff766-bb83-74cf-b74e-e51211825606" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCommitmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019ff766-bb83-7e61-b00d-cbc489207462" xlink:to="loc_us-gaap_OtherCommitmentsTable_019ff766-bb83-74cf-b74e-e51211825606" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019ff766-bb83-7317-b9f8-de9978cd6e0e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_019ff766-bb83-74cf-b74e-e51211825606" xlink:to="loc_srt_StatementGeographicalAxis_019ff766-bb83-7317-b9f8-de9978cd6e0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7317-b9f8-de9978cd6e0e_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_019ff766-bb83-7317-b9f8-de9978cd6e0e" xlink:to="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7317-b9f8-de9978cd6e0e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7e6d-b67a-1a98f52cdbc0" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_019ff766-bb83-7317-b9f8-de9978cd6e0e" xlink:to="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7e6d-b67a-1a98f52cdbc0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_DK_019ff766-bb83-7577-861e-4f41ad91ea66" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_DK"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7e6d-b67a-1a98f52cdbc0" xlink:to="loc_country_DK_019ff766-bb83-7577-861e-4f41ad91ea66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_SG_019ff766-bb83-7639-aa3b-dfeb1d9917ec" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_SG"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7e6d-b67a-1a98f52cdbc0" xlink:to="loc_country_SG_019ff766-bb83-7639-aa3b-dfeb1d9917ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_019ff766-bb83-76e4-a1a0-578759d8b5cc" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7e6d-b67a-1a98f52cdbc0" xlink:to="loc_country_US_019ff766-bb83-76e4-a1a0-578759d8b5cc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_GR_019ff766-bb83-716c-bee4-7b00a6bbfe94" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_GR"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7e6d-b67a-1a98f52cdbc0" xlink:to="loc_country_GR_019ff766-bb83-716c-bee4-7b00a6bbfe94" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseRemainingLeaseTerm_019ff766-bb83-7707-80b6-32405935c4e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseRemainingLeaseTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019ff766-bb83-7e61-b00d-cbc489207462" xlink:to="loc_us-gaap_LesseeOperatingLeaseRemainingLeaseTerm_019ff766-bb83-7707-80b6-32405935c4e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_019ff766-bb83-7efd-a40c-8e8a0d1cb0c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_019ff766-bb83-7e61-b00d-cbc489207462" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_019ff766-bb83-7efd-a40c-8e8a0d1cb0c7" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/NetIncomePerCommonShareAdditionalInformationDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#NetIncomePerCommonShareAdditionalInformationDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/NetIncomePerCommonShareAdditionalInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasicLineItems_019ff766-bb83-7bee-a44c-d3ab4a8a5289" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasicLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_019ff766-bb83-75a0-b6b8-083dc9e863dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019ff766-bb83-7bee-a44c-d3ab4a8a5289" xlink:to="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_019ff766-bb83-75a0-b6b8-083dc9e863dc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAxis_019ff766-bb83-7161-8823-6d9af3d3dc80" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RestatementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_019ff766-bb83-75a0-b6b8-083dc9e863dc" xlink:to="loc_srt_RestatementAxis_019ff766-bb83-7161-8823-6d9af3d3dc80" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_019ff766-bb83-7161-8823-6d9af3d3dc80_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_019ff766-bb83-7161-8823-6d9af3d3dc80" xlink:to="loc_srt_RestatementDomain_019ff766-bb83-7161-8823-6d9af3d3dc80_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_019ff766-bb83-7ef4-8090-aa65e2010fd7" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_019ff766-bb83-7161-8823-6d9af3d3dc80" xlink:to="loc_srt_RestatementDomain_019ff766-bb83-7ef4-8090-aa65e2010fd7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAdjustmentMember_019ff766-bb83-7525-9db2-5cabcc48dfe3" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RestatementAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_019ff766-bb83-7ef4-8090-aa65e2010fd7" xlink:to="loc_srt_RestatementAdjustmentMember_019ff766-bb83-7525-9db2-5cabcc48dfe3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_019ff766-bb83-7e35-b4bd-1450bbf61dfa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019ff766-bb83-7bee-a44c-d3ab4a8a5289" xlink:to="loc_us-gaap_EarningsPerShareDiluted_019ff766-bb83-7e35-b4bd-1450bbf61dfa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_019ff766-bb83-7327-bcce-a2bef3241970" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareBasicLineItems_019ff766-bb83-7bee-a44c-d3ab4a8a5289" xlink:to="loc_us-gaap_EarningsPerShareBasic_019ff766-bb83-7327-bcce-a2bef3241970" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/SegmentReportingDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#SegmentReportingDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/SegmentReportingDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019ff766-bb83-7c10-b835-42c3a7e97dba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019ff766-bb83-7999-bb0a-d070669d7a1e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019ff766-bb83-7c10-b835-42c3a7e97dba" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019ff766-bb83-7999-bb0a-d070669d7a1e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019ff766-bb83-78bc-8135-660adeb2fee4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019ff766-bb83-7999-bb0a-d070669d7a1e" xlink:to="loc_srt_ProductOrServiceAxis_019ff766-bb83-78bc-8135-660adeb2fee4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019ff766-bb83-78bc-8135-660adeb2fee4_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019ff766-bb83-78bc-8135-660adeb2fee4" xlink:to="loc_srt_ProductsAndServicesDomain_019ff766-bb83-78bc-8135-660adeb2fee4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019ff766-bb83-731b-a370-fd4c8ccc74f0" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019ff766-bb83-78bc-8135-660adeb2fee4" xlink:to="loc_srt_ProductsAndServicesDomain_019ff766-bb83-731b-a370-fd4c8ccc74f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_VoyageShippingSegmentMember_01a1a9ae-3e93-76fd-9517-3be1c6d2f9f1" xlink:href="panl-20260930.xsd#panl_VoyageShippingSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019ff766-bb83-731b-a370-fd4c8ccc74f0" xlink:to="loc_panl_VoyageShippingSegmentMember_01a1a9ae-3e93-76fd-9517-3be1c6d2f9f1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_CharterMember_019ff766-bb83-7c09-935a-e9724c98d48d" xlink:href="panl-20260930.xsd#panl_CharterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019ff766-bb83-731b-a370-fd4c8ccc74f0" xlink:to="loc_panl_CharterMember_019ff766-bb83-7c09-935a-e9724c98d48d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PortAndTerminalOperationsAndOtherAncillaryServicesMember_01a19d1c-6a8a-7cd9-ba91-1242f1ce8adf" xlink:href="panl-20260930.xsd#panl_PortAndTerminalOperationsAndOtherAncillaryServicesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019ff766-bb83-731b-a370-fd4c8ccc74f0" xlink:to="loc_panl_PortAndTerminalOperationsAndOtherAncillaryServicesMember_01a19d1c-6a8a-7cd9-ba91-1242f1ce8adf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_TerminalStevedoreAndOtherMember_01a18418-288c-736a-ba54-1c46055d4bc4" xlink:href="panl-20260930.xsd#panl_TerminalStevedoreAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019ff766-bb83-731b-a370-fd4c8ccc74f0" xlink:to="loc_panl_TerminalStevedoreAndOtherMember_01a18418-288c-736a-ba54-1c46055d4bc4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019ff766-bb83-77ba-a2dc-deb499a5b2fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019ff766-bb83-7999-bb0a-d070669d7a1e" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019ff766-bb83-77ba-a2dc-deb499a5b2fc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019ff766-bb83-77ba-a2dc-deb499a5b2fc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019ff766-bb83-77ba-a2dc-deb499a5b2fc" xlink:to="loc_us-gaap_SegmentDomain_019ff766-bb83-77ba-a2dc-deb499a5b2fc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019ff766-bb83-7e25-9d29-8f9e5de8b369" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019ff766-bb83-77ba-a2dc-deb499a5b2fc" xlink:to="loc_us-gaap_SegmentDomain_019ff766-bb83-7e25-9d29-8f9e5de8b369" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_SeaborneDryBulkLogisticsAndTransportationServicesSegmentMember_019ff766-bb83-7cb3-918e-b4496bfb496d" xlink:href="panl-20260930.xsd#panl_SeaborneDryBulkLogisticsAndTransportationServicesSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019ff766-bb83-7e25-9d29-8f9e5de8b369" xlink:to="loc_panl_SeaborneDryBulkLogisticsAndTransportationServicesSegmentMember_019ff766-bb83-7cb3-918e-b4496bfb496d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_019ff766-bb83-77e3-9b4f-30f8566f70f5" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019ff766-bb83-7999-bb0a-d070669d7a1e" xlink:to="loc_srt_ConsolidationItemsAxis_019ff766-bb83-77e3-9b4f-30f8566f70f5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019ff766-bb83-77e3-9b4f-30f8566f70f5_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_019ff766-bb83-77e3-9b4f-30f8566f70f5" xlink:to="loc_srt_ConsolidationItemsDomain_019ff766-bb83-77e3-9b4f-30f8566f70f5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019ff766-bb83-7c3d-8cf9-d3d07792c999" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_019ff766-bb83-77e3-9b4f-30f8566f70f5" xlink:to="loc_srt_ConsolidationItemsDomain_019ff766-bb83-7c3d-8cf9-d3d07792c999" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_019ff766-bb83-7838-85bd-633c77489e01" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019ff766-bb83-7c3d-8cf9-d3d07792c999" xlink:to="loc_us-gaap_OperatingSegmentsMember_019ff766-bb83-7838-85bd-633c77489e01" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019ff766-bb83-7592-9a7a-2d7766ccfea4" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019ff766-bb83-7999-bb0a-d070669d7a1e" xlink:to="loc_srt_StatementGeographicalAxis_019ff766-bb83-7592-9a7a-2d7766ccfea4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7592-9a7a-2d7766ccfea4_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_019ff766-bb83-7592-9a7a-2d7766ccfea4" xlink:to="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7592-9a7a-2d7766ccfea4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7c4c-a653-312994d956da" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_019ff766-bb83-7592-9a7a-2d7766ccfea4" xlink:to="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7c4c-a653-312994d956da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_019ff766-bb83-78b3-a746-883fa0ec352a" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7c4c-a653-312994d956da" xlink:to="loc_country_US_019ff766-bb83-78b3-a746-883fa0ec352a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CA_01a19cfd-076c-7905-b3c9-4f49fa7ef97d" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_CA"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7c4c-a653-312994d956da" xlink:to="loc_country_CA_01a19cfd-076c-7905-b3c9-4f49fa7ef97d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_SG_01a19cfd-7883-799a-929c-713e80d480a4" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_SG"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7c4c-a653-312994d956da" xlink:to="loc_country_SG_01a19cfd-7883-799a-929c-713e80d480a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_DE_01a19cfd-c022-779f-b8cc-e9a9056a01e4" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_DE"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7c4c-a653-312994d956da" xlink:to="loc_country_DE_01a19cfd-c022-779f-b8cc-e9a9056a01e4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_OtherMember_019ff766-bb83-713b-a467-7d2eb0401085" xlink:href="panl-20260930.xsd#panl_OtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019ff766-bb83-7c4c-a653-312994d956da" xlink:to="loc_panl_OtherMember_019ff766-bb83-713b-a467-7d2eb0401085" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfOperatingSegments_019ff766-bb83-70b3-89f7-d54af978b55a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NumberOfOperatingSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019ff766-bb83-7c10-b835-42c3a7e97dba" xlink:to="loc_us-gaap_NumberOfOperatingSegments_019ff766-bb83-70b3-89f7-d54af978b55a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_019ff766-bb83-703f-bd39-60e991d34fa6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019ff766-bb83-7c10-b835-42c3a7e97dba" xlink:to="loc_us-gaap_NumberOfReportableSegments_019ff766-bb83-703f-bd39-60e991d34fa6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019ff766-bb83-79aa-8272-fac32f075384" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019ff766-bb83-7c10-b835-42c3a7e97dba" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019ff766-bb83-79aa-8272-fac32f075384" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_VoyageExpense_019ff766-bb83-7c2c-8062-374dd22c2e50" xlink:href="panl-20260930.xsd#panl_VoyageExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019ff766-bb83-7c10-b835-42c3a7e97dba" xlink:to="loc_panl_VoyageExpense_019ff766-bb83-7c2c-8062-374dd22c2e50" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_RevenueFromContractWithCustomerExcludingAssessedTaxAndVoyageExpense_019ff766-bb83-78d1-994a-31fdc923902a" xlink:href="panl-20260930.xsd#panl_RevenueFromContractWithCustomerExcludingAssessedTaxAndVoyageExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019ff766-bb83-7c10-b835-42c3a7e97dba" xlink:to="loc_panl_RevenueFromContractWithCustomerExcludingAssessedTaxAndVoyageExpense_019ff766-bb83-78d1-994a-31fdc923902a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019ff766-bb83-7108-bda3-578255c762b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019ff766-bb83-7c10-b835-42c3a7e97dba" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_019ff766-bb83-7108-bda3-578255c762b7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019ff766-bb83-7e59-be23-61ae2a91dd54" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019ff766-bb83-7c10-b835-42c3a7e97dba" xlink:to="loc_us-gaap_ProfitLoss_019ff766-bb83-7e59-be23-61ae2a91dd54" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_CharterHireExpense_019ff766-bb83-72c9-b8e9-ddbbc32b3b6c" xlink:href="panl-20260930.xsd#panl_CharterHireExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019ff766-bb83-7c10-b835-42c3a7e97dba" xlink:to="loc_panl_CharterHireExpense_019ff766-bb83-72c9-b8e9-ddbbc32b3b6c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_VesselOperatingExpense_019ff766-bb83-70b1-8247-76ef95540d30" xlink:href="panl-20260930.xsd#panl_VesselOperatingExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019ff766-bb83-7c10-b835-42c3a7e97dba" xlink:to="loc_panl_VesselOperatingExpense_019ff766-bb83-70b1-8247-76ef95540d30" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.pangaeals.com/role/SubsequentEventsDetails" xlink:type="simple" xlink:href="panl-20260930.xsd#SubsequentEventsDetails"/>
  <link:definitionLink xlink:role="http://www.pangaeals.com/role/SubsequentEventsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_019ff766-bb83-70fc-89b5-ce194430e02f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_us-gaap_SubsequentEventTable_019ff766-bb83-70fc-89b5-ce194430e02f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_019ff766-bb83-796f-aa54-d8b9aaeb8515" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_019ff766-bb83-70fc-89b5-ce194430e02f" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_019ff766-bb83-796f-aa54-d8b9aaeb8515" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_019ff766-bb83-796f-aa54-d8b9aaeb8515_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_019ff766-bb83-796f-aa54-d8b9aaeb8515" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_019ff766-bb83-796f-aa54-d8b9aaeb8515_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_019ff766-bb83-7aa3-8864-76f9e97bf414" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_019ff766-bb83-796f-aa54-d8b9aaeb8515" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_019ff766-bb83-7aa3-8864-76f9e97bf414" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_019ff766-bb83-767c-a991-f07e418241ac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_019ff766-bb83-7aa3-8864-76f9e97bf414" xlink:to="loc_us-gaap_SubsequentEventMember_019ff766-bb83-767c-a991-f07e418241ac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a19d12-1c18-75f9-bee8-24d278b34f23" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_019ff766-bb83-70fc-89b5-ce194430e02f" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a19d12-1c18-75f9-bee8-24d278b34f23" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a19d12-1c18-75f9-bee8-24d278b34f23_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a19d12-1c18-75f9-bee8-24d278b34f23" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a19d12-1c18-75f9-bee8-24d278b34f23_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a19d12-1c18-7aa1-87a3-e9a32cd149f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a19d12-1c18-75f9-bee8-24d278b34f23" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a19d12-1c18-7aa1-87a3-e9a32cd149f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_SeniorSecuredTermLoanFacilityDatedOct162026Member_01a19d12-1c18-7748-b46b-e5da7a3cf017" xlink:href="panl-20260930.xsd#panl_SeniorSecuredTermLoanFacilityDatedOct162026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a19d12-1c18-7aa1-87a3-e9a32cd149f6" xlink:to="loc_panl_SeniorSecuredTermLoanFacilityDatedOct162026Member_01a19d12-1c18-7748-b46b-e5da7a3cf017" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_SeniorSecuredTermLoanFacilityDatedAugust142024Member_01a19d12-1c18-7788-81d0-5ed351c11872" xlink:href="panl-20260930.xsd#panl_SeniorSecuredTermLoanFacilityDatedAugust142024Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a19d12-1c18-7aa1-87a3-e9a32cd149f6" xlink:to="loc_panl_SeniorSecuredTermLoanFacilityDatedAugust142024Member_01a19d12-1c18-7788-81d0-5ed351c11872" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a19d12-1c18-79d1-9a02-3443276d3c42" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_019ff766-bb83-70fc-89b5-ce194430e02f" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a19d12-1c18-79d1-9a02-3443276d3c42" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a19d12-1c18-79d1-9a02-3443276d3c42_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a19d12-1c18-79d1-9a02-3443276d3c42" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a19d12-1c18-79d1-9a02-3443276d3c42_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a19d12-1c18-7baf-8c5d-08111ffe116d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a19d12-1c18-79d1-9a02-3443276d3c42" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a19d12-1c18-7baf-8c5d-08111ffe116d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_01a19d12-1c18-7a7f-9196-7dfc09c2b6fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a19d12-1c18-7baf-8c5d-08111ffe116d" xlink:to="loc_us-gaap_SecuredDebtMember_01a19d12-1c18-7a7f-9196-7dfc09c2b6fa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_01a19d12-1c18-78d5-846f-e2777d577589" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_019ff766-bb83-70fc-89b5-ce194430e02f" xlink:to="loc_dei_LegalEntityAxis_01a19d12-1c18-78d5-846f-e2777d577589" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a19d12-1c18-78d5-846f-e2777d577589_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_01a19d12-1c18-78d5-846f-e2777d577589" xlink:to="loc_dei_EntityDomain_01a19d12-1c18-78d5-846f-e2777d577589_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_01a19d12-1c18-7739-8038-739a1cb88396" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_01a19d12-1c18-78d5-846f-e2777d577589" xlink:to="loc_dei_EntityDomain_01a19d12-1c18-7739-8038-739a1cb88396" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_NordicBulkPartnersLLCMember_01a19d12-1c18-7c84-a1ea-9354eaf014d6" xlink:href="panl-20260930.xsd#panl_NordicBulkPartnersLLCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_01a19d12-1c18-7739-8038-739a1cb88396" xlink:to="loc_panl_NordicBulkPartnersLLCMember_01a19d12-1c18-7c84-a1ea-9354eaf014d6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_01a19d12-1c18-7d2e-a56d-b96bcb079655" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementScenarioAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_019ff766-bb83-70fc-89b5-ce194430e02f" xlink:to="loc_srt_StatementScenarioAxis_01a19d12-1c18-7d2e-a56d-b96bcb079655" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_01a19d12-1c18-7d2e-a56d-b96bcb079655_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_01a19d12-1c18-7d2e-a56d-b96bcb079655" xlink:to="loc_srt_ScenarioUnspecifiedDomain_01a19d12-1c18-7d2e-a56d-b96bcb079655_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_01a19d12-1c18-78b0-9a1f-86c7955ef9d8" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScenarioUnspecifiedDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_01a19d12-1c18-7d2e-a56d-b96bcb079655" xlink:to="loc_srt_ScenarioUnspecifiedDomain_01a19d12-1c18-78b0-9a1f-86c7955ef9d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_01a19d12-1c18-7a36-977b-34d29f5a4a7e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ScenarioForecastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_01a19d12-1c18-78b0-9a1f-86c7955ef9d8" xlink:to="loc_srt_ScenarioForecastMember_01a19d12-1c18-7a36-977b-34d29f5a4a7e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfDebt_01a19d12-1c18-76ee-8fcc-f2cbdb91a4af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfDebt_01a19d12-1c18-76ee-8fcc-f2cbdb91a4af" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_01a19d12-1c18-707b-bb57-d3b41e35e1fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_us-gaap_LongTermDebt_01a19d12-1c18-707b-bb57-d3b41e35e1fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_01a19d12-1c18-7b41-9e83-f4d1e33c0709" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_01a19d12-1c18-7b41-9e83-f4d1e33c0709" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_PaymentsForExerciseOfFinanceLeasePurchaseOption_01a19d12-1c18-723f-9f2e-357f6dfda172" xlink:href="panl-20260930.xsd#panl_PaymentsForExerciseOfFinanceLeasePurchaseOption"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_panl_PaymentsForExerciseOfFinanceLeasePurchaseOption_01a19d12-1c18-723f-9f2e-357f6dfda172" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_01a19d12-1c18-7452-9dde-7da6d9c33d0b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_01a19d12-1c18-7452-9dde-7da6d9c33d0b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_DebtInstrumentNumberOfQuarterlyInstallments_01a19d12-1c18-7b89-8573-d8eef83d5e17" xlink:href="panl-20260930.xsd#panl_DebtInstrumentNumberOfQuarterlyInstallments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_panl_DebtInstrumentNumberOfQuarterlyInstallments_01a19d12-1c18-7b89-8573-d8eef83d5e17" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_01a19d12-1c18-7890-83fc-4cdc0fd12b8f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentPeriodicPaymentPrincipal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_us-gaap_DebtInstrumentPeriodicPaymentPrincipal_01a19d12-1c18-7890-83fc-4cdc0fd12b8f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid_01a19d12-1c18-72e3-bde6-e064a68b6b6d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_us-gaap_DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid_01a19d12-1c18-72e3-bde6-e064a68b6b6d" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_GuarantorObligationsMinimumConsolidatedLiquidity_01a19d12-1c18-71ea-a659-7c3b75107f4b" xlink:href="panl-20260930.xsd#panl_GuarantorObligationsMinimumConsolidatedLiquidity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_panl_GuarantorObligationsMinimumConsolidatedLiquidity_01a19d12-1c18-71ea-a659-7c3b75107f4b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_GuarantorObligationMinimumConsolidatedNetWorth_01a19d12-1c18-799e-8c41-81d009cbee93" xlink:href="panl-20260930.xsd#panl_GuarantorObligationMinimumConsolidatedNetWorth"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_panl_GuarantorObligationMinimumConsolidatedNetWorth_01a19d12-1c18-799e-8c41-81d009cbee93" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_GuarantorObligationMaximumRatioOfTotalIndebtednessToConsolidatedNetWorth_01a19d12-1c18-74dc-bf45-45c49cac012d" xlink:href="panl-20260930.xsd#panl_GuarantorObligationMaximumRatioOfTotalIndebtednessToConsolidatedNetWorth"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_panl_GuarantorObligationMaximumRatioOfTotalIndebtednessToConsolidatedNetWorth_01a19d12-1c18-74dc-bf45-45c49cac012d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_panl_GuarantorObligationMinimumSecurityCoverageRatio_01a19d12-1c18-7ad3-81b1-92878254591a" xlink:href="panl-20260930.xsd#panl_GuarantorObligationMinimumSecurityCoverageRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_panl_GuarantorObligationMinimumSecurityCoverageRatio_01a19d12-1c18-7ad3-81b1-92878254591a" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a19d12-1c18-789d-b938-46e10fe1ab18" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01a19d12-1c18-789d-b938-46e10fe1ab18" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_019ff766-bb83-7d03-a973-f8c88e148c1f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_019ff766-bb83-765d-941d-f103222d2d65" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_019ff766-bb83-7d03-a973-f8c88e148c1f" xlink:type="arc" order="13"/>
  </link:definitionLink>
</link:linkbase>
