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  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd" />
  <xsd:import namespace="http://fasb.org/us-gaap/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd" />
  <xsd:import namespace="http://fasb.org/srt/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd" />
  <xsd:element name="SecurityDepositsToManagerMember" id="dlng_SecurityDepositsToManagerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DistributionFromNovember122025ToFebruary112026Member" id="dlng_DistributionFromNovember122025ToFebruary112026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DistributionFromFebruary122026ToMay112026Member" id="dlng_DistributionFromFebruary122026ToMay112026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DynagasHoldingLimitedMember" id="dlng_DynagasHoldingLimitedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PegasusShipholdingSAMember" id="dlng_PegasusShipholdingSAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="LanceShippingSAMember" id="dlng_LanceShippingSAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SeacrownMaritimeLtdMember" id="dlng_SeacrownMaritimeLtdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NavajoMarineLimitedMember" id="dlng_NavajoMarineLimitedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SolanaHoldingLtdMember" id="dlng_SolanaHoldingLtdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DynagasOperatingGPLLCMember" id="dlng_DynagasOperatingGPLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DynagasOperatingLPMember" id="dlng_DynagasOperatingLPMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MajorChartererAMember" id="dlng_MajorChartererAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MajorChartererBMember" id="dlng_MajorChartererBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MajorChartererCMember" id="dlng_MajorChartererCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WorkingCapitalAdvancesToManagerMember" id="dlng_WorkingCapitalAdvancesToManagerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AdministrativeServicesAgreementIIMember" id="dlng_AdministrativeServicesAgreementIIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MasterManagementAgreementMember" id="dlng_MasterManagementAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DynagasLtdMember" id="dlng_DynagasLtdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WorkingCapitalAdvancesMember" id="dlng_WorkingCapitalAdvancesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ExecutiveServicesAgreementIMember" id="dlng_ExecutiveServicesAgreementIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ExecutiveServicesAgreementInitialTermMember" id="dlng_ExecutiveServicesAgreementInitialTermMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ExecutiveServicesAgreementAutomaticRenewalMember" id="dlng_ExecutiveServicesAgreementAutomaticRenewalMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AdministrativeServicesAgreementMember" id="dlng_AdministrativeServicesAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MonthlyFeeMember" id="dlng_MonthlyFeeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="VesselCostMember" id="dlng_VesselCostMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AccumulatedDepreciationMember" id="dlng_AccumulatedDepreciationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NetBookValueMember" id="dlng_NetBookValueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SeniorSecuredTermLoanCreditFacilityMember" id="dlng_SeniorSecuredTermLoanCreditFacilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SeniorSecuredTermLoanCreditFacilityBMember" id="dlng_SeniorSecuredTermLoanCreditFacilityBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TwoTimeCharterMember" id="dlng_TwoTimeCharterMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SponsorMember" id="dlng_SponsorMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DistributionFromAndIssueDateToButExcludingNovember2023Member" id="dlng_DistributionFromAndIssueDateToButExcludingNovember2023Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FromNovember2023Member" id="dlng_FromNovember2023Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AnyTimeOnOrAfterNovemberMember" id="dlng_AnyTimeOnOrAfterNovemberMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TotalQuarterlyDistributionTargetAmountMember" id="dlng_TotalQuarterlyDistributionTargetAmountMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MinimumQuarterlyDistributionMember" id="dlng_MinimumQuarterlyDistributionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="IncentiveDistributionRightsMember" id="dlng_IncentiveDistributionRightsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="FirstTargetDistributionMember" id="dlng_FirstTargetDistributionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SecondTargetDistributionMember" id="dlng_SecondTargetDistributionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ThirdTargetDistributionMember" id="dlng_ThirdTargetDistributionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ThereafterTargetDistributionMember" id="dlng_ThereafterTargetDistributionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="VesselsNet" id="dlng_VesselsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="DeferredRevenueNonCurrentLiability" id="dlng_DeferredRevenueNonCurrentLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="VoyageExpensesRelatedParty" id="dlng_VoyageExpensesRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="RelatedPartyTransactionGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty" id="dlng_RelatedPartyTransactionGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ManagementFeesRelatedParty" id="dlng_ManagementFeesRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NetIncomeLossAllocatedToPreferredLimitedPartners" id="dlng_NetIncomeLossAllocatedToPreferredLimitedPartners" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="WeightedAverageNumberUnitsOutstandingBasicAndDilutedAbstract" id="dlng_WeightedAverageNumberUnitsOutstandingBasicAndDilutedAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseInDueFromToRelatedParties" id="dlng_IncreaseDecreaseInDueFromToRelatedParties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseInUnearnedRevenue" id="dlng_IncreaseDecreaseInUnearnedRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="DisclosureVesselsNetAbstract" id="dlng_DisclosureVesselsNetAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="VesselsNetTextBlock" id="dlng_VesselsNetTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DisclosureInterestAndFinanceCostsAbstract" id="dlng_DisclosureInterestAndFinanceCostsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InterestAndFinanceCostsTextBlock" id="dlng_InterestAndFinanceCostsTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ListSubsidiariesTableTextBlock" id="dlng_ListSubsidiariesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ListNonVesselOwningSubsidiariesTableTextBlock" id="dlng_ListNonVesselOwningSubsidiariesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="RelatedPartyTransactionsBalancesTableTextBlock" id="dlng_RelatedPartyTransactionsBalancesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LoansAndCreditFacilitiesAmountsOutstandingTableTextBlock" id="dlng_LoansAndCreditFacilitiesAmountsOutstandingTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MinimumFutureCharterRevenuesTableTextBlock" id="dlng_MinimumFutureCharterRevenuesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfLossIncomePerUnitBasicAndDilutedTableTextBlock" id="dlng_ScheduleOfLossIncomePerUnitBasicAndDilutedTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="InterestAndFinanceCostsTableTextBlock" id="dlng_InterestAndFinanceCostsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="EntityIncorporationCountryName" id="dlng_EntityIncorporationCountryName" type="xbrli:normalizedStringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="LNGCarrierCapacity" id="dlng_LNGCarrierCapacity" type="dtr-types:volumeItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="WorkingCapitalSurplusDeficit" id="dlng_WorkingCapitalSurplusDeficit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="ExecutiveServicesFeesRelatedParty" id="dlng_ExecutiveServicesFeesRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="DailyManagementFeePayableAmount" id="dlng_DailyManagementFeePayableAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="VesselManagementAgreementFeesUpwardsAdjustmentPercentage" id="dlng_VesselManagementAgreementFeesUpwardsAdjustmentPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AdministrativeServicesAgreementDaysNoticeRequired" id="dlng_AdministrativeServicesAgreementDaysNoticeRequired" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CharterHireCommissionPercentage" id="dlng_CharterHireCommissionPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ExecutiveServicesFeeAmountPayable" id="dlng_ExecutiveServicesFeeAmountPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ExecutiveServicesAgreementDurationPeriod" id="dlng_ExecutiveServicesAgreementDurationPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DueFromRelatedPartiesFairValueDisclosure" id="dlng_DueFromRelatedPartiesFairValueDisclosure" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="OperatingLeasesFutureMinimumPaymentsDueCurrent1" id="dlng_OperatingLeasesFutureMinimumPaymentsDueCurrent1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="OperatingLeasesFutureMinimumPaymentsDueInTwoYears1" id="dlng_OperatingLeasesFutureMinimumPaymentsDueInTwoYears1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="OperatingLeasesFutureMinimumPaymentsDueInThreeYears1" id="dlng_OperatingLeasesFutureMinimumPaymentsDueInThreeYears1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="OperatingLeasesFutureMinimumPaymentsDueInFourYears1" id="dlng_OperatingLeasesFutureMinimumPaymentsDueInFourYears1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="OperatingLeasesFutureMinimumPaymentsDueInFiveYears1" id="dlng_OperatingLeasesFutureMinimumPaymentsDueInFiveYears1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="OperatingLeasesFutureMinimumPaymentsDueThereafter1" id="dlng_OperatingLeasesFutureMinimumPaymentsDueThereafter1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="OperatingLeasesFutureMinimumPaymentsDue1" id="dlng_OperatingLeasesFutureMinimumPaymentsDue1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LessorOperatingLeaseNatureOfLeasePayments" id="dlng_LessorOperatingLeaseNatureOfLeasePayments" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LessorOperatingLeaseRenewalTerm1" id="dlng_LessorOperatingLeaseRenewalTerm1" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommissionPayableOverMinimumContractualCharterRevenues" id="dlng_CommissionPayableOverMinimumContractualCharterRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="AdjustmentOfManagementFeeDueToInflation" id="dlng_AdjustmentOfManagementFeeDueToInflation" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsCurrent" id="dlng_AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="DistributionPerUnit" id="dlng_DistributionPerUnit" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PercentageAllocationsOfAdditionalAvailableCashAmongUnitholders" id="dlng_PercentageAllocationsOfAdditionalAvailableCashAmongUnitholders" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PreferredStockDividendBasisSpreadOnVariableRate1" id="dlng_PreferredStockDividendBasisSpreadOnVariableRate1" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DistributionMadeToLimitedPartnerAndGeneralPartnerAnnouncementDate" id="dlng_DistributionMadeToLimitedPartnerAndGeneralPartnerAnnouncementDate" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DistributionMadeToLimitedAndGeneralPartnerDistributionDate" id="dlng_DistributionMadeToLimitedAndGeneralPartnerDistributionDate" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DistributionMadeToLimitedAndGeneralPartnerDateRecord" id="dlng_DistributionMadeToLimitedAndGeneralPartnerDateRecord" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NetIncomeLossAllocatedToPreferredLimitedIPartners" id="dlng_NetIncomeLossAllocatedToPreferredLimitedIPartners" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="UnitholdersOfLimitedPartnershipMember" id="dlng_UnitholdersOfLimitedPartnershipMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="QuarterlyUnitCashDistributionFromMayToAugustMember" id="dlng_QuarterlyUnitCashDistributionFromMayToAugustMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="UnearnedRevenueCurrent" id="dlng_UnearnedRevenueCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="CommonLimitedPartnerIIIMember" id="dlng_CommonLimitedPartnerIIIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="VesselName" id="dlng_VesselName" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="LngCarrierDeliveryDateFromShipyard" id="dlng_LngCarrierDeliveryDateFromShipyard" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="LngCarrierDeliveryDateToPartnership" id="dlng_LngCarrierDeliveryDateToPartnership" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="AnotherTwoTimeChartersMember" id="dlng_AnotherTwoTimeChartersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RevenuesMember" id="dlng_RevenuesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PercentageOfFinancingAmountToRepurchaseVessels" id="dlng_PercentageOfFinancingAmountToRepurchaseVessels" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="NumberOfQuarterlyInstallmentsInWhichCharterHirePrincipalIsAmortized" id="dlng_NumberOfQuarterlyInstallmentsInWhichCharterHirePrincipalIsAmortized" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="OtherIncomeDisclosuresNonoperating" id="dlng_OtherIncomeDisclosuresNonoperating" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AmortizationOfDeferredRevenueCharges" id="dlng_AmortizationOfDeferredRevenueCharges" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="PreferredStockRedemptionShares" id="dlng_PreferredStockRedemptionShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="VoyageRevenues" id="dlng_VoyageRevenues" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="SaleLeasebackTransactionWithChinaDevelopmentBankFinancialLeasingCoMember" id="dlng_SaleLeasebackTransactionWithChinaDevelopmentBankFinancialLeasingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SaleLeasebackTransactionForObRiverMember" id="dlng_SaleLeasebackTransactionForObRiverMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SaleLeasebackTransactionForCleanEnergyMember" id="dlng_SaleLeasebackTransactionForCleanEnergyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SaleLeasebackTransactionForAmurRiverMember" id="dlng_SaleLeasebackTransactionForAmurRiverMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SaleLeasebackTransactionForArcticAuroraMember" id="dlng_SaleLeasebackTransactionForArcticAuroraMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ValueMaintenanceRatioAsPercentageOfCharterHirePrincipal" id="dlng_ValueMaintenanceRatioAsPercentageOfCharterHirePrincipal" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="SaleAndLeasebackTransactionNumberOfVessels" id="dlng_SaleAndLeasebackTransactionNumberOfVessels" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="OwnFundsUsedToRepayDebt" id="dlng_OwnFundsUsedToRepayDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="NoteworthyShippingLimitedMember" id="dlng_NoteworthyShippingLimitedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MandatorilyRedeemablePreferredUnitsDeemedDividends" id="dlng_MandatorilyRedeemablePreferredUnitsDeemedDividends" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="MandatorilyRedeemablePreferredUnitsDividendRatePercentage" id="dlng_MandatorilyRedeemablePreferredUnitsDividendRatePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="MandatorilyRedeemablePreferredUnitsPricePerUnitExcludingAccruedAndUnpaidDistribution" id="dlng_MandatorilyRedeemablePreferredUnitsPricePerUnitExcludingAccruedAndUnpaidDistribution" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="PartnersCapitalAccountDistributionsDeclaredNotPaid" id="dlng_PartnersCapitalAccountDistributionsDeclaredNotPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="LeaseObligationDeferredFinancingFeesCurrent" id="dlng_LeaseObligationDeferredFinancingFeesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="LeaseObligationDeferredFinancingFeesNoncurrent" id="dlng_LeaseObligationDeferredFinancingFeesNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="PaymentsForPurchaseCostRepurchaseOfCommonStock" id="dlng_PaymentsForPurchaseCostRepurchaseOfCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="FinancialInstrumentsSubjectToMandatoryRedemptionAmountReclassifiedFromEquityToLiabilities" id="dlng_FinancialInstrumentsSubjectToMandatoryRedemptionAmountReclassifiedFromEquityToLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DebtAndLeaseObligationDisclosureTextBlock" id="dlng_DebtAndLeaseObligationDisclosureTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="TotalGrossAmountOfAccruedDividends" id="dlng_TotalGrossAmountOfAccruedDividends" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DeemedDividendOnPreferredUnits" id="dlng_DeemedDividendOnPreferredUnits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="IncreaseDecreaseInAccruedDividendsOnPreferredUnits" id="dlng_IncreaseDecreaseInAccruedDividendsOnPreferredUnits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="GainOnMonetizationOfEuropeanUnionFueleuMaritimeRegulationComplianceSurplusAbstract" id="dlng_GainOnMonetizationOfEuropeanUnionFueleuMaritimeRegulationComplianceSurplusAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="EuropeanUnionFueleuMaritimeRegulationCompliancePoolingAgreementMember" id="dlng_EuropeanUnionFueleuMaritimeRegulationCompliancePoolingAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="WorkingCapitalAdvancesDueToManagerMember" id="dlng_WorkingCapitalAdvancesDueToManagerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OtherPartnershipExpensesDueFromManagerMember" id="dlng_OtherPartnershipExpensesDueFromManagerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AmortizationOfDeferredFinancingFees" id="dlng_AmortizationOfDeferredFinancingFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ExecutiveServiceFee" id="dlng_ExecutiveServiceFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="OtherPayablesAbstract" id="dlng_OtherPayablesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OtherPayablesTextBlock" id="dlng_OtherPayablesTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="MaximumAmountOfLossDueToCreditRisk" id="dlng_MaximumAmountOfLossDueToCreditRisk" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ChartersThatIndividuallyAccountedForMoreThanTenPercent" id="dlng_ChartersThatIndividuallyAccountedForMoreThanTenPercent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ChartererTypeAxis" id="dlng_ChartererTypeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TypeOfChartererDomain" id="dlng_TypeOfChartererDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
</xsd:schema>
