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  <xs:element name="NonExecutiveEmployeesAndNonEmployeesMember" id="ship_NonExecutiveEmployeesAndNonEmployeesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AwardedMarch62026Member" id="ship_AwardedMarch62026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetNoncurrent" id="ship_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetCurrent" id="ship_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
</xs:schema>
