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    <element id="cmre_CapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive" name="CapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalTotal" name="CapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalTotal" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CapitalLeaseObligationsTotalAmountOfRemainingInterest" name="CapitalLeaseObligationsTotalAmountOfRemainingInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CapitalLeaseObligationsRemainingBalance" name="CapitalLeaseObligationsRemainingBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AccruedRevenueNet" name="AccruedRevenueNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AccruedRevenueReceivable" name="AccruedRevenueReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AccruedRevenueReceivableNonCurrent" name="AccruedRevenueReceivableNonCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CharterRevenueResultingFromVaryingCharterRates" name="CharterRevenueResultingFromVaryingCharterRates" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NetAccruedCharterRevenueMaturityInNextSixMonths" name="NetAccruedCharterRevenueMaturityInNextSixMonths" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NetAccruedCharterRevenueMaturityInYearTwo" name="NetAccruedCharterRevenueMaturityInYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NetAccruedCharterRevenueMaturityInYearThree" name="NetAccruedCharterRevenueMaturityInYearThree" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NetAccruedCharterRevenueMaturityInYearFour" name="NetAccruedCharterRevenueMaturityInYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NetAccruedCharterRevenueMaturityInYearFive" name="NetAccruedCharterRevenueMaturityInYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_HiresCollectedInAdvance" name="HiresCollectedInAdvance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_UnearnedRevenue" name="UnearnedRevenue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_TimeCharterArrangementsRemainingTermsPeriod" name="TimeCharterArrangementsRemainingTermsPeriod" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_RevenueDaysPerAnnum" name="RevenueDaysPerAnnum" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_RedeliveryDates" name="RedeliveryDates" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FutureMinimumContractualCharterRevenueInNextSixMonths" name="FutureMinimumContractualCharterRevenueInNextSixMonths" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FutureMinimumContractualCharterRevenueYearTwo" name="FutureMinimumContractualCharterRevenueYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FutureMinimumContractualCharterRevenueYearThree" name="FutureMinimumContractualCharterRevenueYearThree" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FutureMinimumContractualCharterRevenueYearFour" name="FutureMinimumContractualCharterRevenueYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FutureMinimumContractualCharterRevenueYearFive" name="FutureMinimumContractualCharterRevenueYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FutureMinimumContractualCharterRevenueAfterYearFive" name="FutureMinimumContractualCharterRevenueAfterYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_TotalFutureMinimumContractualCharterRevenue" name="TotalFutureMinimumContractualCharterRevenue" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ContractualObligationOnJvNewbuilds" name="ContractualObligationOnJvNewbuilds" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberOfJvNewbuildVesselsOwnedFourtyNinePercent" name="NumberOfJvNewbuildVesselsOwnedFourtyNinePercent" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberOfJvNewbuildVesselsOwnedTwentyFivePercent" name="NumberOfJvNewbuildVesselsOwnedTwentyFivePercent" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberOfJvNewbuildVesselsOwnedFourtyPercent" name="NumberOfJvNewbuildVesselsOwnedFourtyPercent" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_IssuanceDateOfSeriesBPreferredStock" name="IssuanceDateOfSeriesBPreferredStock" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_IssuanceDateOfSeriesCPreferredStock" name="IssuanceDateOfSeriesCPreferredStock" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PreferredStockSeriesBDividendRatePercentage" name="PreferredStockSeriesBDividendRatePercentage" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PreferredStockSeriesCDividendRatePercentage" name="PreferredStockSeriesCDividendRatePercentage" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_InterestPaidOnSwaps" name="InterestPaidOnSwaps" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_UsRelatedGrossTransportationIncomeThatTaxApplies" name="UsRelatedGrossTransportationIncomeThatTaxApplies" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_OwnershipIncomeTaxPercentage" name="OwnershipIncomeTaxPercentage" nillable="true" xbrli:periodType="instant" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NotionalAmountOfDerivativesQualifyingForCashFlowHedge" name="NotionalAmountOfDerivativesQualifyingForCashFlowHedge" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_RealizedIneffectivenessInterestRateSwaps" name="RealizedIneffectivenessInterestRateSwaps" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_MaturityOfInterestRateSwapsQualifyingForCashFlowHedge" name="MaturityOfInterestRateSwapsQualifyingForCashFlowHedge" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NotionalAmountOfDerivativesNotQualifyingForCashFlowHedge" name="NotionalAmountOfDerivativesNotQualifyingForCashFlowHedge" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_MaturityOfInterestRateSwapsThatDoNotQualifyForCashFlowHedge" name="MaturityOfInterestRateSwapsThatDoNotQualifyForCashFlowHedge" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DerivativesQualifyingAsHedgesChangeInFairValueAndInterestPaid" name="DerivativesQualifyingAsHedgesChangeInFairValueAndInterestPaid" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ReclassificationOnInterestPaidOfDerivativesQualifyingAsHedges" name="ReclassificationOnInterestPaidOfDerivativesQualifyingAsHedges" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DescriptionOfLocationOfGainLossOnCashFlowHedgeIneffectivenessInFinancialStatements" name="DescriptionOfLocationOfGainLossOnCashFlowHedgeIneffectivenessInFinancialStatements" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DerivativeLiabilityFairValueNet" name="DerivativeLiabilityFairValueNet" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NetSettlementsOnInterestRateSwapsQualifyingForCashFlowHedge" name="NetSettlementsOnInterestRateSwapsQualifyingForCashFlowHedge" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AmountsReclassifiedFromNetSettlementsOnInterestRateSwapsQualifyingForHedgeAccountingToDepreciation" name="AmountsReclassifiedFromNetSettlementsOnInterestRateSwapsQualifyingForHedgeAccountingToDepreciation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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    <element id="cmre_SubsidiaryInvolvedIntoAgreement" name="SubsidiaryInvolvedIntoAgreement" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_RangeOfParticipationOfCompanysWhollyOwnedSubsidiary" name="RangeOfParticipationOfCompanysWhollyOwnedSubsidiary" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_MaximumInvestmentAmountByCounterparty" name="MaximumInvestmentAmountByCounterparty" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_MinimumInvestmentAmountByWhollyOwnedSubsidiary" name="MinimumInvestmentAmountByWhollyOwnedSubsidiary" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_OptionForMaximumInvestmentAmountByWhollyOwnedSubsidiary" name="OptionForMaximumInvestmentAmountByWhollyOwnedSubsidiary" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_VesselNameOrHullName" name="VesselNameOrHullName" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ParticipationPercentageOfCostamareVentures" name="ParticipationPercentageOfCostamareVentures" nillable="true" xbrli:periodType="instant" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CurrentAssetsOfAffiliates" name="CurrentAssetsOfAffiliates" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
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    <element id="cmre_CurrentLiabilitiesOfAffiliates" name="CurrentLiabilitiesOfAffiliates" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NetIncomeOfAffiliates" name="NetIncomeOfAffiliates" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DebtInstrumentCarryingAmountCreditFacility" name="DebtInstrumentCarryingAmountCreditFacility" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanFacilityCostisMaritimeCorporationAndChristosMaritimeCorporation" name="LoanFacilityCostisMaritimeCorporationAndChristosMaritimeCorporation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanFacilityMasShippingCo" name="LoanFacilityMasShippingCo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanFacilityMontesShippingCoAndKelsenShippingCo" name="LoanFacilityMontesShippingCoAndKelsenShippingCo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanFacilityCapetanissaMaritimeCorporation" name="LoanFacilityCapetanissaMaritimeCorporation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanFacilityRenaMaritimeCorporation" name="LoanFacilityRenaMaritimeCorporation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanFacilityNoOneReportingEntityMscRomanosMscMethoniMscUlsanKoroniAndKyparissia" name="LoanFacilityNoOneReportingEntityMscRomanosMscMethoniMscUlsanKoroniAndKyparissia" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanFacilityNoTwoReportingEntityHulls" name="LoanFacilityNoTwoReportingEntityHulls" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanFacilityUndineShippingCoQuentinShippingCoAndSanderShippingCo" name="LoanFacilityUndineShippingCoQuentinShippingCoAndSanderShippingCo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanFacilityRaymondShippingCoAndTeranceShippingCo" name="LoanFacilityRaymondShippingCoAndTeranceShippingCo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanFacilityNoThreeReportingEntity" name="LoanFacilityNoThreeReportingEntity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DebtInstrumentCarryingAmountTermLoans" name="DebtInstrumentCarryingAmountTermLoans" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FinanceLeasedAssetsNet" name="FinanceLeasedAssetsNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DividendFromAffiliates" name="DividendFromAffiliates" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_GainLossOnSaleVessels" name="GainLossOnSaleVessels" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_IssuanceDateOfSeriesDPreferredStock" name="IssuanceDateOfSeriesDPreferredStock" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ProceedsFromSaleOfVessels" name="ProceedsFromSaleOfVessels" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PriceVessels" name="PriceVessels" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_VesselsDeliveredOn" name="VesselsDeliveredOn" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CostOfAcquisitionOfThreeSecondhandVessels" name="CostOfAcquisitionOfThreeSecondhandVessels" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_VesselsDisposalPrice" name="VesselsDisposalPrice" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CarryingValueOfFullyDepreciatedVessels" name="CarryingValueOfFullyDepreciatedVessels" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberOfFullyDepreciatedVessels" name="NumberOfFullyDepreciatedVessels" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CarryingValueOfVesselsProvidedAsCollateralsToSecureLoans" name="CarryingValueOfVesselsProvidedAsCollateralsToSecureLoans" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberOfVesselsProvidedAsCollateralsToSecureLoans" name="NumberOfVesselsProvidedAsCollateralsToSecureLoans" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PercentageOfParticipation" name="PercentageOfParticipation" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AggregateContributingAmount" name="AggregateContributingAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AmountsReceivedFromAffiliates" name="AmountsReceivedFromAffiliates" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AdvancesForVesselAcquisitionsCashOutflow" name="AdvancesForVesselAcquisitionsCashOutflow" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PaymentsToAcquireVessels1" name="PaymentsToAcquireVessels1" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PortionFacilityUsedToRepayExistingIndebtness" name="PortionFacilityUsedToRepayExistingIndebtness" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FacilityRepaymentsDueToSaleVessel" name="FacilityRepaymentsDueToSaleVessel" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LineCreditNumberOutstandingPeriodicPaymentsPrincipal" name="LineCreditNumberOutstandingPeriodicPaymentsPrincipal" nillable="true" xbrli:periodType="duration" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_BalloonPayment" name="BalloonPayment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_MinimumLiquidityRatio" name="MinimumLiquidityRatio" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_MaximumRatioTotalLiabilitiesToMarketValueAdjustedTotalAssets" name="MaximumRatioTotalLiabilitiesToMarketValueAdjustedTotalAssets" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberVesselsSecuredFacilityWithFirstPriorityMortgages" name="NumberVesselsSecuredFacilityWithFirstPriorityMortgages" nillable="true" xbrli:periodType="duration" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberShipOwningCompaniesAsCorporateGuarantees" name="NumberShipOwningCompaniesAsCorporateGuarantees" nillable="true" xbrli:periodType="duration" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberOfVesselsReplacedExistingVesselsWithFirstPriorityMortgages" name="NumberOfVesselsReplacedExistingVesselsWithFirstPriorityMortgages" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberOfVesselsChangedTheirFlag" name="NumberOfVesselsChangedTheirFlag" nillable="true" xbrli:periodType="duration" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_MaximumNetFundedDebtToTotalNetAssetsRatio" name="MaximumNetFundedDebtToTotalNetAssetsRatio" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_MinimumLiquidityAmount" name="MinimumLiquidityAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_MinimumRatioOfEbitdaToNetInterestExpense" name="MinimumRatioOfEbitdaToNetInterestExpense" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_MinimumMarketValueAdjustedNetWorth" name="MinimumMarketValueAdjustedNetWorth" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DrawDownAmountUpToEndPeriod" name="DrawDownAmountUpToEndPeriod" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_MaximumBorrowingCapacityPerVessel" name="MaximumBorrowingCapacityPerVessel" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanRepaymentDueToSaleVessels" name="LoanRepaymentDueToSaleVessels" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AmountFullDebtRepayment" name="AmountFullDebtRepayment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AvailablePeriodForDrawDown" name="AvailablePeriodForDrawDown" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberOutstandingInstallments" name="NumberOutstandingInstallments" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LineCreditFinalPaymentPrincipal" name="LineCreditFinalPaymentPrincipal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LineCreditPaymentPrincipalRemainingPeriod" name="LineCreditPaymentPrincipalRemainingPeriod" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_TermLoansAdditionalInformation" name="TermLoansAdditionalInformation" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_InterestCapitalizedAdvancesForVesselAcquisitions" name="InterestCapitalizedAdvancesForVesselAcquisitions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_YearOfEstablishmentOrAcquisition" name="YearOfEstablishmentOrAcquisition" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DateOfEntryIntoAgreement" name="DateOfEntryIntoAgreement" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanFacilityAmalgamationDate" name="LoanFacilityAmalgamationDate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ThirdSupplementalAgreementDate" name="ThirdSupplementalAgreementDate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LineOfCreditFacilityInitiationDate" name="LineOfCreditFacilityInitiationDate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DeliveryDate1" name="DeliveryDate1" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ManagementFeePerDayPerVessel" name="ManagementFeePerDayPerVessel" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ManagementFeePerDayPerVesselUnderBareboatCharter" name="ManagementFeePerDayPerVesselUnderBareboatCharter" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ManagementAgreementExpirationDate1" name="ManagementAgreementExpirationDate1" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ManagementAgreementsAutomaticExtentionExpirationDate1" name="ManagementAgreementsAutomaticExtentionExpirationDate1" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_MonthsRequiredForCancellationWrittenNoticeForManagementAgreement" name="MonthsRequiredForCancellationWrittenNoticeForManagementAgreement" nillable="true" xbrli:periodType="duration" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ManagementFeesCalculatedOnSaleVessel" name="ManagementFeesCalculatedOnSaleVessel" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AnnualAdjustmentOnSupervisoryFeesAfterPreviousYearEnd" name="AnnualAdjustmentOnSupervisoryFeesAfterPreviousYearEnd" nillable="true" xbrli:periodType="instant" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ConstructionSupervisoryFee" name="ConstructionSupervisoryFee" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ThirdPartyManagementAgreementDate" name="ThirdPartyManagementAgreementDate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_TerminationFeeDescription" name="TerminationFeeDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CommencementOfServicesDateByThirdPartyManager" name="CommencementOfServicesDateByThirdPartyManager" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_TotalChargesByManagerToCompanysAffiliates" name="TotalChargesByManagerToCompanysAffiliates" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ManagementFeesRelatedParties" name="ManagementFeesRelatedParties" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CommonStockAuthorizationDate" name="CommonStockAuthorizationDate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_StockSplitDate" name="StockSplitDate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ProceedsFromIssuanceFollowOnOffering" name="ProceedsFromIssuanceFollowOnOffering" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PreferredStockSharesDesignatedAsSeriesParticipatingPreferredStock" name="PreferredStockSharesDesignatedAsSeriesParticipatingPreferredStock" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PreferredStockSeriesCExpenses" name="PreferredStockSeriesCExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PreferredStockSeriesCIssuedDuringPeriodSharesNewIssues" name="PreferredStockSeriesCIssuedDuringPeriodSharesNewIssues" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PreferredStockSeriesCIssuedDuringPeriodValueNewIssues" name="PreferredStockSeriesCIssuedDuringPeriodValueNewIssues" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PreferredStockSeriesDExpenses" name="PreferredStockSeriesDExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PreferredStockSeriesDSharesIssuedDuringPeriodValueNewIssues" name="PreferredStockSeriesDSharesIssuedDuringPeriodValueNewIssues" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PreferredStockSeriesDValueIssuedDuringPeriodValueNewIssues" name="PreferredStockSeriesDValueIssuedDuringPeriodValueNewIssues" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_EquitySecuritiesReceivedDebtMaturitiesDate" name="EquitySecuritiesReceivedDebtMaturitiesDate" nillable="true" xbrli:periodType="duration" type="xbrli:dateItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FairValueUnwinding" name="FairValueUnwinding" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_VoyageRevenues" name="VoyageRevenues" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_VoyageExpenses" name="VoyageExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_VoyageExpensesRelatedParties" name="VoyageExpensesRelatedParties" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_GeneralAdministrativeExpenses" name="GeneralAdministrativeExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AmortizationDeferredDrydockingSpecialSurvey" name="AmortizationDeferredDrydockingSpecialSurvey" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AmortizationOfPrepaidLeaseRentals" name="AmortizationOfPrepaidLeaseRentals" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_SwapsBreakageCost" name="SwapsBreakageCost" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AmountsReclassifiedFromNetSettlementsOnInterestRateSwapsQualifyingForHedgeAccountingToPrepaidLeaseRentals" name="AmountsReclassifiedFromNetSettlementsOnInterestRateSwapsQualifyingForHedgeAccountingToPrepaidLeaseRentals" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CapacityOfEachVessels" name="CapacityOfEachVessels" nillable="true" xbrli:periodType="duration" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PrepaidLeaseRentalsGross" name="PrepaidLeaseRentalsGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AmortizationOfPrepaidLeaseRent" name="AmortizationOfPrepaidLeaseRent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ScheduleOfDerivativesInAscCashFlowHedgingRelationshipsTableTextBlock" name="ScheduleOfDerivativesInAscCashFlowHedgingRelationshipsTableTextBlock" nillable="true" xbrli:periodType="duration" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_TotalWhollyOwnedSubsidiariesAsPeriodEnd" name="TotalWhollyOwnedSubsidiariesAsPeriodEnd" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberOfSubsidiariesIncorporatedInMarchallIslands" name="NumberOfSubsidiariesIncorporatedInMarchallIslands" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AnnualFeesForManagementServices" name="AnnualFeesForManagementServices" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_WorkingCapitalSecurity" name="WorkingCapitalSecurity" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_WorkingCapitalSecurityPerVessel" name="WorkingCapitalSecurityPerVessel" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberOfVesselsUnderShipManagementCell" name="NumberOfVesselsUnderShipManagementCell" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_OfficersCompensationCharged" name="OfficersCompensationCharged" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FairValueOfSharesIssuedToManager" name="FairValueOfSharesIssuedToManager" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberOfSharesIssuedToManager" name="NumberOfSharesIssuedToManager" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PercentageOwnership" name="PercentageOwnership" nillable="true" xbrli:periodType="instant" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_WriteOffDerivingFromFairValueMeasurement" name="WriteOffDerivingFromFairValueMeasurement" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_TermOfAgreementInYears" name="TermOfAgreementInYears" nillable="true" xbrli:periodType="duration" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberOfJointlyOwnedCompanies" name="NumberOfJointlyOwnedCompanies" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_RestatedFrameworkAgreementCommitmentPeriod" name="RestatedFrameworkAgreementCommitmentPeriod" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_RestatedFrameworkAgreementTerminationDate" name="RestatedFrameworkAgreementTerminationDate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DateOfRestatedFrameworkAgreement" name="DateOfRestatedFrameworkAgreement" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextSixMonths" name="LongTermDebtMaturitiesRepaymentsOfPrincipalInNextSixMonths" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PreferredStockDividendRateSeriesD" name="PreferredStockDividendRateSeriesD" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ForwardRateContractExpirationFrequency" name="ForwardRateContractExpirationFrequency" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ForeignCurrencyAgreementsValue" name="ForeignCurrencyAgreementsValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_EstimatedScrapRate" name="EstimatedScrapRate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DecreaseInDepreciationExpense" name="DecreaseInDepreciationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_IncreaseInNetIncome" name="IncreaseInNetIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_IncreaseInPerCommonShareBasicAndDiluted" name="IncreaseInPerCommonShareBasicAndDiluted" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_EquityBasedPayments" name="EquityBasedPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PercentageVesselsContractPriceAvailableForDrawDown" name="PercentageVesselsContractPriceAvailableForDrawDown" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_MlpOffering" name="MlpOffering" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberVesselsManaged" name="NumberVesselsManaged" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_InterestExpenseIncurredOnFinanceLeases" name="InterestExpenseIncurredOnFinanceLeases" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FinanceLeaseObligationMaturity" name="FinanceLeaseObligationMaturity" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_VesselsSaleAndLeasebackPrice" name="VesselsSaleAndLeasebackPrice" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ConstructionSupervisoryFeePaid" name="ConstructionSupervisoryFeePaid" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DateOfLoanRepayment" name="DateOfLoanRepayment" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PreferredStockSeriesCDividendsDeclaredMember" name="PreferredStockSeriesCDividendsDeclaredMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PreferredStockSeriesBDividendsDeclaredMember" name="PreferredStockSeriesBDividendsDeclaredMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AmountsReceivedFromAffiliatedCompaniesMember" name="AmountsReceivedFromAffiliatedCompaniesMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CostamareShippingCompanySaNewMember" name="CostamareShippingCompanySaNewMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanForAcquisitionVesselKoroniTrancheDMember" name="LoanForAcquisitionVesselKoroniTrancheDMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AffiliatesBalanceSheetDateNewMember" name="AffiliatesBalanceSheetDateNewMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AffiliatesBalanceSheetDateMember" name="AffiliatesBalanceSheetDateMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanForAcquisitionConstructionMember" name="LoanForAcquisitionConstructionMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NetBookValueVesselMember" name="NetBookValueVesselMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AccumulatedDepreciationVesselMember" name="AccumulatedDepreciationVesselMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_VesselCostMember" name="VesselCostMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_VesselsNetAdditionalInformationMember" name="VesselsNetAdditionalInformationMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CostamareVenturesIncMember" name="CostamareVenturesIncMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PublicOfferingOfSeriesCCumulativeRedeemablePerpetualPreferredStockMember" name="PublicOfferingOfSeriesCCumulativeRedeemablePerpetualPreferredStockMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PublicOfferingOfSeriesBCumulativeRedeemablePerpetualPreferredStockMember" name="PublicOfferingOfSeriesBCumulativeRedeemablePerpetualPreferredStockMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AmountGainLossRecognizedInIncomeDerivativeIneffectivePortionMember" name="AmountGainLossRecognizedInIncomeDerivativeIneffectivePortionMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_JanuaryToAprilCySeriesCPreferredDividendsPaidMember" name="JanuaryToAprilCySeriesCPreferredDividendsPaidMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_KonstantinaDisposalMember" name="KonstantinaDisposalMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FirstQuarterCyDividendsPaidMember" name="FirstQuarterCyDividendsPaidMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FourthQuarterPyDividendsPaidMember" name="FourthQuarterPyDividendsPaidMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_SecondFollowOnOfferingCompletionMember" name="SecondFollowOnOfferingCompletionMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FollowOnOfferingCompletionMember" name="FollowOnOfferingCompletionMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CompanysIpoCompletionMember" name="CompanysIpoCompletionMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CompanysAuthorizedCapitalStockMember" name="CompanysAuthorizedCapitalStockMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AuthorizedCapitalStockAmendedArticlesIncorporationMember" name="AuthorizedCapitalStockAmendedArticlesIncorporationMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_IssuanceOfFourMillionSeriesCCumulativeRedeemablePerpetualPreferredStockMember" name="IssuanceOfFourMillionSeriesCCumulativeRedeemablePerpetualPreferredStockMember" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
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    <element id="cmre_NumberWhollyOwnedSubsidiariesWithVessels" name="NumberWhollyOwnedSubsidiariesWithVessels" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberWhollyOwnedSubsidiariesThatSoldOrDisposedTheirVesselsBecameDormant" name="NumberWhollyOwnedSubsidiariesThatSoldOrDisposedTheirVesselsBecameDormant" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberWhollyOwnedSubsidiariesEstablishedForFutureAcquisitionsOrInvestments" name="NumberWhollyOwnedSubsidiariesEstablishedForFutureAcquisitionsOrInvestments" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AccountingPoliciesReceivablesAbstract" name="AccountingPoliciesReceivablesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AllowanceForDoubtfulAccountsInAccountsReceivable" name="AllowanceForDoubtfulAccountsInAccountsReceivable" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AccountingPoliciesVesselsNetAbstract" name="AccountingPoliciesVesselsNetAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AccountingPoliciesImpairmentLongLivedAssetsAbstract" name="AccountingPoliciesImpairmentLongLivedAssetsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_GrowthRate" name="GrowthRate" nillable="true" xbrli:periodType="instant" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AnnualInflationRate" name="AnnualInflationRate" nillable="true" xbrli:periodType="instant" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DrydockAndSpecialSurveyOffHireDaysRange" name="DrydockAndSpecialSurveyOffHireDaysRange" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AnnualAdjustmentOnManagementFeesAfterDecember" name="AnnualAdjustmentOnManagementFeesAfterDecember" nillable="true" xbrli:periodType="instant" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FleetUtilization" name="FleetUtilization" nillable="true" xbrli:periodType="instant" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AccountingPoliciesDerivativeFinancialInstrumentsAbstact" name="AccountingPoliciesDerivativeFinancialInstrumentsAbstact" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_HedgeEffectivenessCriteria" name="HedgeEffectivenessCriteria" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_OfficersCompensationChargedPeriodEnd" name="OfficersCompensationChargedPeriodEnd" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CommissionChargedOnCharterHireAgreements" name="CommissionChargedOnCharterHireAgreements" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DateWhenServicesProvidedStopped" name="DateWhenServicesProvidedStopped" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_WorkingCapitalSecurityCurrent" name="WorkingCapitalSecurityCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_WorkingCapitalSecurityNonCurrent" name="WorkingCapitalSecurityNonCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_OtherNoncurrentAssetsadditionalInformationDetailsAbstract" name="OtherNoncurrentAssetsadditionalInformationDetailsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ParticipationInShareCapitalByCounterparty" name="ParticipationInShareCapitalByCounterparty" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DeferredChargesAxis" name="DeferredChargesAxis" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" />
    <element id="cmre_DeferredChargesDomain" name="DeferredChargesDomain" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CostamareVenturesDisclosureAbstarct" name="CostamareVenturesDisclosureAbstarct" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AffiliateJointlyOwnedCompaniesAbstract" name="AffiliateJointlyOwnedCompaniesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ScheduleOfAffiliateJointlyOwnedCompaniesTable" name="ScheduleOfAffiliateJointlyOwnedCompaniesTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="cmre_AffiliateJointlyOwnedCompaniesLineItems" name="AffiliateJointlyOwnedCompaniesLineItems" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AffiliateJointlyOwnedCompaniesAxis" name="AffiliateJointlyOwnedCompaniesAxis" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" />
    <element id="cmre_AffiliateJointlyOwnedCompaniesDomain" name="AffiliateJointlyOwnedCompaniesDomain" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_SummarizedFinancialInformationOfAffiliatesAbstract" name="SummarizedFinancialInformationOfAffiliatesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ScheduleOfSummarizedFinancialInformationOfAffiliatesTable" name="ScheduleOfSummarizedFinancialInformationOfAffiliatesTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="cmre_AffiliateJointlyOwnedCompaniesSummarizedFinancialInformationLineItems" name="AffiliateJointlyOwnedCompaniesSummarizedFinancialInformationLineItems" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_ScheduleOfInvestmentsInAffiliateTable" name="ScheduleOfInvestmentsInAffiliateTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="cmre_AffiliateJointlyOwnedCompaniesAdditionalInformationAxis" name="AffiliateJointlyOwnedCompaniesAdditionalInformationAxis" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" />
    <element id="cmre_AffiliateJointlyOwnedCompaniesAdditionalInformationDomain" name="AffiliateJointlyOwnedCompaniesAdditionalInformationDomain" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_TermLoansAbstract" name="TermLoansAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LoanFacilityAdeleShippingCoBastianShippingCoAndCadenceShippingCo" name="LoanFacilityAdeleShippingCoBastianShippingCoAndCadenceShippingCo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LongTermDebtTermLoansAbstract" name="LongTermDebtTermLoansAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LongTermDebtTermLoansTable" name="LongTermDebtTermLoansTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="cmre_LongTermDebtTermLoansLineItems" name="LongTermDebtTermLoansLineItems" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_LongTermDebtTermLoansAxis" name="LongTermDebtTermLoansAxis" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" />
    <element id="cmre_LongTermDebtTermLoansDomain" name="LongTermDebtTermLoansDomain" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DrawDownDate" name="DrawDownDate" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DisclosureLongtermDebtcostamarePartnersCreditFacilityadditionalInformationDetailsAbstract" name="DisclosureLongtermDebtcostamarePartnersCreditFacilityadditionalInformationDetailsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FinanceLeasedAssetsAbstract" name="FinanceLeasedAssetsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_FinanceLeaseObligationAbstract" name="FinanceLeaseObligationAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_PrepaidLeaseRentalsAbstract" name="PrepaidLeaseRentalsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CapitalLeaseObligationsByMaturityAbstract" name="CapitalLeaseObligationsByMaturityAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AccruedCharterRevenueCurrentAndNonCurrentAbstract" name="AccruedCharterRevenueCurrentAndNonCurrentAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_AccruedCharterRevenueReductions" name="AccruedCharterRevenueReductions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NetAccruedCharterRevenueByMaturitiesAbstract" name="NetAccruedCharterRevenueByMaturitiesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NetAccruedCharterRevenueMaturityAfterYearFive" name="NetAccruedCharterRevenueMaturityAfterYearFive" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_UnearnedRevenueCurrentAndNonCurrentAbstract" name="UnearnedRevenueCurrentAndNonCurrentAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_TimeCharterArrangementsTable" name="TimeCharterArrangementsTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="cmre_CommitmentContingenciesLongTermTimeCharterAxis" name="CommitmentContingenciesLongTermTimeCharterAxis" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" />
    <element id="cmre_CommitmentContingenciesLongTermTimeCharterDomain" name="CommitmentContingenciesLongTermTimeCharterDomain" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_NumberOfUncharteredVessels" name="NumberOfUncharteredVessels" nillable="true" xbrli:periodType="instant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_VesselsUnderConstructionTable" name="VesselsUnderConstructionTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="cmre_CommitmentsContingenciesVesselsUnderConstructionAxis" name="CommitmentsContingenciesVesselsUnderConstructionAxis" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" />
    <element id="cmre_CommitmentsContingenciesVesselsUnderConstructionDomain" name="CommitmentsContingenciesVesselsUnderConstructionDomain" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_CommonStockPreferredStockAndAdditionalPaidInCapitalTable" name="CommonStockPreferredStockAndAdditionalPaidInCapitalTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="cmre_CommonStockPreferredStockAndAdditionalPaidInCapitalAxis" name="CommonStockPreferredStockAndAdditionalPaidInCapitalAxis" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" />
    <element id="cmre_CommonStockPreferredStockAndAdditionalPaidInCapitalDomain" name="CommonStockPreferredStockAndAdditionalPaidInCapitalDomain" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_EarningsPerShareBasicEpsAbstract" name="EarningsPerShareBasicEpsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DerivativeInstrumentsCashFlowHedgingRelationshipsTable" name="DerivativeInstrumentsCashFlowHedgingRelationshipsTable" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" />
    <element id="cmre_InformationOnZimRestructuringPlan" name="InformationOnZimRestructuringPlan" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DisposalContractedPrice" name="DisposalContractedPrice" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DeliveryDate" name="DeliveryDate" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_DisposalDate" name="DisposalDate" nillable="true" xbrli:periodType="duration" type="xbrli:dateItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_InterestRateSwapTerminationDate" name="InterestRateSwapTerminationDate" nillable="true" xbrli:periodType="duration" type="xbrli:dateItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_InterestRateSwapSettlementAmount" name="InterestRateSwapSettlementAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_InvestedAmountInAffiliatesForNewbuilds" name="InvestedAmountInAffiliatesForNewbuilds" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="cmre_InvestedAmountInAffiliatesForSwaptionAgreement" name="InvestedAmountInAffiliatesForSwaptionAgreement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
</schema>
