<?xml version="1.0" encoding="us-ascii"?>
<!--
Taxonomy based on XBRL standard Version 2.1.
Created by UBmatrix Taxonomy Designer 3.0.2.2383 (2008-08-05 08:43).  
Contact www.ubmatrix.com
Copyright (c) 2002-2014 UBmatrix inc., All Rights Reserved
Produced on 2014-09-16 15:22:34
-->
<schema
  xmlns="http://www.w3.org/2001/XMLSchema"
  xmlns:xbrli="http://www.xbrl.org/2003/instance"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:dlng="http://www.dynagas.com/20140630"
  xmlns:num="http://www.xbrl.org/dtr/type/numeric"
  xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric"
  targetNamespace="http://www.dynagas.com/20140630"
  elementFormDefault="qualified"
  attributeFormDefault="unqualified">
  <annotation>
    <appinfo>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/ConsolidatedBalanceSheets"
        id="ConsolidatedBalanceSheets">
        <link:definition>000200 - Statement - Consolidated Balance Sheets (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/DocumentAndEntityInformation"
        id="DocumentAndEntityInformation">
        <link:definition>000100 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/ConsolidatedBalanceSheetsParentheticals"
        id="ConsolidatedBalanceSheetsParentheticals">
        <link:definition>000250 - Statement - Consolidated Balance Sheets (Parentheticals) (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/ConsolidatedStatementsOfComprehensiveIncomeLoss"
        id="ConsolidatedStatementsOfComprehensiveIncomeLoss">
        <link:definition>000300 - Statement - Unaudited Interim Consolidated Statements of Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/ConsolidatedStatementsOfCashFlows"
        id="ConsolidatedStatementsOfCashFlows">
        <link:definition>000500 - Statement - Unaudited Interim Consolidated Statements Of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/BasisOfPresentationAndGeneralInformation"
        id="BasisOfPresentationAndGeneralInformation">
        <link:definition>100100 - Disclosure - Basis of Presentation and General Information:</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/SignificantAccountingPoliciesAndRecentAccountingPronouncements"
        id="SignificantAccountingPoliciesAndRecentAccountingPronouncements">
        <link:definition>100200 - Disclosure - Significant Accounting Policies:</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/TransactionsWithRelatedParties"
        id="TransactionsWithRelatedParties">
        <link:definition>100300 - Disclosure - Transactions with related parties:</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/VesselsNet"
        id="VesselsNet">
        <link:definition>100400 - Disclosure - Vessels, net:</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/LongTermDebt"
        id="LongTermDebt">
        <link:definition>100500 - Disclosure - Long-Term Debt:</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/FairValueMeasurementsAndFinancialInstruments"
        id="FairValueMeasurementsAndFinancialInstruments">
        <link:definition>100600 - Disclosure - Fair Value Measurements:</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/CommitmentsAndContingencies"
        id="CommitmentsAndContingencies">
        <link:definition>100700 - Disclosure - Commitments and Contingencies:</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/PartnersEquity"
        id="PartnersEquity">
        <link:definition>100800 - Disclosure - Partners' Equity:</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/EarningsPerUnit"
        id="EarningsPerUnit">
        <link:definition>100900 - Disclosure - Earnings per Unit:</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/InterestAndFinanceCosts"
        id="InterestAndFinanceCosts">
        <link:definition>101000 - Disclosure - Interest and Finance Costs:</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/SubsequentEvents"
        id="SubsequentEvents">
        <link:definition>101300 - Disclosure - Subsequent Events:</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/SignificantAccountingPoliciesAndRecentAccountingPronouncementsTables"
        id="SignificantAccountingPoliciesAndRecentAccountingPronouncementsTables">
        <link:definition>300200 - Disclosure - Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/VesselsNetTables"
        id="VesselsNetTables">
        <link:definition>300400 - Disclosure - Vessels, net (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/LongTermDebtTables"
        id="LongTermDebtTables">
        <link:definition>300500 - Disclosure - Long-Term Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/CommitmentsAndContingenciesTables"
        id="CommitmentsAndContingenciesTables">
        <link:definition>300700 - Disclosure - Commitments and Contingencies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/PartnersEquityTables"
        id="PartnersEquityTables">
        <link:definition>300800 - Disclosure - Partners' Equity (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/EarningsPerUnitTables"
        id="EarningsPerUnitTables">
        <link:definition>300900 - Disclosure - Earnings per Unit (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/InterestAndFinanceCostsTables"
        id="InterestAndFinanceCostsTables">
        <link:definition>301000 - Disclosure - Interest and Finance Costs (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/BasisOfPresentationAndGeneralInformationDetails"
        id="BasisOfPresentationAndGeneralInformationDetails">
        <link:definition>400100 - Disclosure - Basis of Presentation and General Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/MajorCharterersTableDetails"
        id="MajorCharterersTableDetails">
        <link:definition>400200 - Disclosure - Significant Accounting Policies - Major Charterers (Table) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/DynagasLtdDetails"
        id="DynagasLtdDetails">
        <link:definition>400300 - Disclosure - Transactions with related parties - Dynagas Ltd. (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/TransactionsWithRelatedPartiesLoanFromRelatePartyDetails"
        id="TransactionsWithRelatedPartiesLoanFromRelatePartyDetails">
        <link:definition>400320 - Disclosure - Transactions with related parties - Loan from related party (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/VesselsNetTableDetails"
        id="VesselsNetTableDetails">
        <link:definition>400400 - Disclosure - Vessels, net (Table) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/LongTermDebtLoansAndCreditFacilitiesTableDetails"
        id="LongTermDebtLoansAndCreditFacilitiesTableDetails">
        <link:definition>400500 - Disclosure - Long-Term Debt - Loans And Credit Facilities (Table) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/PrincipalPaymentsTableDetails"
        id="LoansAndCreditFacilitiesTableDetails">
        <link:definition>400510 - Disclosure - Long-Term Debt - Principal Payments (Table) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/LongTermDebtLoansAndCreditFacilitiesDetails"
        id="LongTermDebtLoansAndCreditFacilitiesDetails">
        <link:definition>400520 - Disclosure - Long-Term Debt - Loans And Credit Facilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/CommitmentsAndContingenciesCharterHireTableDetails"
        id="CommitmentsAndContingenciesCharterHireTableDetails">
        <link:definition>400700 - Disclosure - Commitments and Contingencies - Charter Hire (Table) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/CommitmentsAndContingenciesManagementFeesTableDetails"
        id="CommitmentsAndContingenciesManagementFeesTableDetails">
        <link:definition>400710 - Disclosure - Commitments and Contingencies - Management Fees (Table) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/CommitmentsAndContingenciesDetails"
        id="CommitmentsAndContingenciesDetails">
        <link:definition>400720 - Disclosure - Commitments and Contingencies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/PartnersEquityTableDetails"
        id="PartnersEquityTableDetails">
        <link:definition>400800 - Disclosure - Partners' Equity (Table) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/PartnersEquityDetails"
        id="PartnersEquityDetails">
        <link:definition>400810 - Disclosure - Partners' Equity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/EarningsPerUnitTableDetails"
        id="EarningsPerUnitTableDetails">
        <link:definition>400900 - Disclosure - Earnings per Unit (Table) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/InterestAndFinanceCostsTableDetails"
        id="InterestAndFinanceCostsTableDetails">
        <link:definition>401000 - Disclosure - Interest and Finance Costs (Table) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/TransactionsWithRelatedPartiesExecutiveServicesAgreementDetails"
        id="TransactionsWithRelatedPartiesExecutiveServicesAgreementDetails">
        <link:definition>400330 - Disclosure - Transactions with related parties - Executive Services Agreement (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/SubsequentEventsDetails"
        id="SubsequentEventsDetails">
        <link:definition>401100 - Disclosure - Subsequent Events (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/LongTermDebtLoansAndCreditFacilitiesTermsAndComplianceDetails"
        id="LongTermDebtLoansAndCreditFacilitiesTermsAndComplianceDetails">
        <link:definition>400530 - Disclosure - Long-Term Debt - Loans And Credit Facilities Terms (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType
        roleURI="http://www.dynagas.com/20140630/role/TransactionsWithRelatedPartiesOmnibusAgreement"
        id="TransactionsWithRelatedPartiesOmnibusAgreement">
        <link:definition>400325 - Disclosure - Transactions with related parties - Omnibus Agreement - Arctic Aurora Acquisition (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:linkbaseRef xlink:type="simple"
        xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef"
        xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase"
        xlink:href="dlng-20140630_lab.xml"
        xlink:title="Label Links, all" />
      <link:linkbaseRef xlink:type="simple"
        xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef"
        xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase"
        xlink:href="dlng-20140630_pre.xml"
        xlink:title="Presentation Links, all" />
      <link:linkbaseRef xlink:type="simple"
        xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef"
        xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase"
        xlink:href="dlng-20140630_cal.xml"
        xlink:title="Calculation Links, all" />
      <link:linkbaseRef xlink:type="simple"
        xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef"
        xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase"
        xlink:href="dlng-20140630_def.xml"
        xlink:title="Definition Links, all" />
    </appinfo>
  </annotation>
  <import
    namespace="http://www.xbrl.org/2003/instance"
    schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <import
    namespace="http://www.xbrl.org/dtr/type/numeric"
    schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <import
    namespace="http://www.xbrl.org/dtr/type/non-numeric"
    schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <import
    namespace="http://fasb.org/us-gaap/2013-01-31"
    schemaLocation="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd" />
  <import
    namespace="http://xbrl.sec.gov/dei/2013-01-31"
    schemaLocation="http://xbrl.sec.gov/dei/2013/dei-2013-01-31.xsd" />
  <import
    namespace="http://www.xbrl.org/2009/role/negated"
    schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <element
    id="dlng_AdjustmentOfManagementFeeDueToInflation"
    name="AdjustmentOfManagementFeeDueToInflation"
    type="num:percentItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsDue"
    name="AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsDue"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsInFiveYears"
    name="AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsInFiveYears"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsInFourYears"
    name="AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsInFourYears"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsInNextSixMonths"
    name="AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsInNextSixMonths"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsInThreeYears"
    name="AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsInThreeYears"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsInTwoYears"
    name="AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsInTwoYears"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsThereafter"
    name="AdministrativeAndTechnicalManagementFeesFutureMinimumPaymentsThereafter"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_AllVesselsMember"
    name="AllVesselsMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_AnnualIncreaseInDistributionPerUnit"
    name="AnnualIncreaseInDistributionPerUnit"
    type="num:perShareItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_ArcticAuroraIIMember"
    name="ArcticAuroraIIMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_ArcticAuroraMember"
    name="ArcticAuroraMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_CharterHireCommissionPercentage"
    name="CharterHireCommissionPercentage"
    type="num:percentItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_CleanEnergyMember"
    name="CleanEnergyMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_CleanForceMember"
    name="CleanForceMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_CommissionPayableOverMinimumContractualCharterRevenues"
    name="CommissionPayableOverMinimumContractualCharterRevenues"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_CommonLimitedPartnerIIMember"
    name="CommonLimitedPartnerIIMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_CommonLimitedPartnerMember"
    name="CommonLimitedPartnerMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_CommonLimitedPartnersCapitalAccount"
    name="CommonLimitedPartnersCapitalAccount"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_CommonLimitedPartnersCapitalAccountUnitsIssued"
    name="CommonLimitedPartnersCapitalAccountUnitsIssued"
    type="xbrli:sharesItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    nillable="true" />
  <element
    id="dlng_CommonLimitedPartnersCapitalAccountUnitsOffered"
    name="CommonLimitedPartnersCapitalAccountUnitsOffered"
    type="xbrli:sharesItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    nillable="true" />
  <element
    id="dlng_CommonLimitedPartnersCapitalAccountUnitsOutstanding"
    name="CommonLimitedPartnersCapitalAccountUnitsOutstanding"
    type="xbrli:sharesItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    nillable="true" />
  <element
    id="dlng_CreditFacilityAmountDrawnDown"
    name="CreditFacilityAmountDrawnDown"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_CreditSuisseAGIIIMember"
    name="CreditSuisseAGIIIMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_CreditSuisseAGIIMember"
    name="CreditSuisseAGIIMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_CreditSuisseAGIMember"
    name="CreditSuisseAGIMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_DailyManagementFeePayableAmount"
    name="DailyManagementFeePayableAmount"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_DebtInstrumentFaceAmountExpectedToBeIssued"
    name="DebtInstrumentFaceAmountExpectedToBeIssued"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_DeferredRevenueNonCurrentAsset"
    name="DeferredRevenueNonCurrentAsset"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_DeferredRevenueNonCurrentLiability"
    name="DeferredRevenueNonCurrentLiability"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_DistributionMadeToLimitedAndGeneralPartnerDateRecord"
    name="DistributionMadeToLimitedAndGeneralPartnerDateRecord"
    type="xbrli:dateItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_DistributionMadeToLimitedAndGeneralPartnerDistributionDate"
    name="DistributionMadeToLimitedAndGeneralPartnerDistributionDate"
    type="xbrli:dateItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_DocumentAndEntityInformation"
    name="DocumentAndEntityInformation"
    type="xbrli:stringItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_DynagasGPLLCIIMember"
    name="DynagasGPLLCIIMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_DynagasGPLLCMember"
    name="DynagasGPLLCMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_DynagasHoldingLtdIIIMember"
    name="DynagasHoldingLtdIIIMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_DynagasHoldingLtdIIMember"
    name="DynagasHoldingLtdIIMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_DynagasHoldingLtdMember"
    name="DynagasHoldingLtdMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_DynagasLNGPartnersLPIIMember"
    name="DynagasLNGPartnersLPIIMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_DynagasLNGPartnersLPMember"
    name="DynagasLNGPartnersLPMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_ExecutiveServicesAgreementDuration"
    name="ExecutiveServicesAgreementDuration"
    type="xbrli:stringItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_ExecutiveServicesAgreementMember"
    name="ExecutiveServicesAgreementMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_ExecutiveServicesFeeAmountPayable"
    name="ExecutiveServicesFeeAmountPayable"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_FinanceCosts"
    name="FinanceCosts"
    type="xbrli:stringItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_FirstTargetDistributionMember"
    name="FirstTargetDistributionMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_FollowOnOfferingDatedJune182014Member"
    name="FollowOnOfferingDatedJune182014Member"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_GeneralPartnerIIMember"
    name="GeneralPartnerIIMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_IncentiveDistributionRightsMember"
    name="IncentiveDistributionRightsMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_IncreaseDecreaseInDueFromToRelatedParties"
    name="IncreaseDecreaseInDueFromToRelatedParties"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_IncreaseDecreaseInUnearnedRevenue"
    name="IncreaseDecreaseInUnearnedRevenue"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_InitialPublicOfferingMember"
    name="InitialPublicOfferingMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_InterestAndFinanceCostsTableTextBlock"
    name="InterestAndFinanceCostsTableTextBlock"
    type="nonnum:textBlockItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_InterestAndFinanceCostsTextBlock"
    name="InterestAndFinanceCostsTextBlock"
    type="nonnum:textBlockItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_IssuanceCommonUnitsOtherOfferingCosts"
    name="IssuanceCommonUnitsOtherOfferingCosts"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_IssuanceCommonUnitsOtherOfferingCostsPaid"
    name="IssuanceCommonUnitsOtherOfferingCostsPaid"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_LNGCarrierCapacity"
    name="LNGCarrierCapacity"
    type="xbrli:integerItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_LNGCarrierDeliveryDate"
    name="LNGCarrierDeliveryDate"
    type="xbrli:stringItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_LNGCarrierYearBuilt"
    name="LNGCarrierYearBuilt"
    type="xbrli:stringItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_LineOfCreditFacilityDuration"
    name="LineOfCreditFacilityDuration"
    type="xbrli:stringItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_LineOfRevolvingCreditFacilityReductionTerms"
    name="LineOfRevolvingCreditFacilityReductionTerms"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_LoansAndCreditFacilitiesAmountsOutstandingTableTextBlock"
    name="LoansAndCreditFacilitiesAmountsOutstandingTableTextBlock"
    type="nonnum:textBlockItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_MajorChartererBMember"
    name="MajorChartererBMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_MajorChartererCMember"
    name="MajorChartererCMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_MajorChartererMember"
    name="MajorChartererMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_ManagementAgreementsMember"
    name="ManagementAgreementsMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_ManagementFeesRelatedParty"
    name="ManagementFeesRelatedParty"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_ManagementServicesAgreementDuration"
    name="ManagementServicesAgreementDuration"
    type="xbrli:stringItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_MaximumDistributionPerUnit"
    name="MaximumDistributionPerUnit"
    type="num:perShareItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_MinimumDistributionPerUnit"
    name="MinimumDistributionPerUnit"
    type="num:perShareItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_MinimumFutureCharterRevenuesTableTextBlock"
    name="MinimumFutureCharterRevenuesTableTextBlock"
    type="nonnum:textBlockItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_MinimumFutureTechnicalAndCommercialManagementFeeTableTextBlock"
    name="MinimumFutureTechnicalAndCommercialManagementFeeTableTextBlock"
    type="nonnum:textBlockItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_MinimumQuarterlyDistributionMember"
    name="MinimumQuarterlyDistributionMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_NetIncomeLossAllocatedToCommonLimitedPartners"
    name="NetIncomeLossAllocatedToCommonLimitedPartners"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_NetIncomeLossAllocatedToSubordinatedLimitedPartners"
    name="NetIncomeLossAllocatedToSubordinatedLimitedPartners"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_NetIncomeLossPerOutstandingCommonLimitedPartnerUnitBasicAndDiluted"
    name="NetIncomeLossPerOutstandingCommonLimitedPartnerUnitBasicAndDiluted"
    type="num:perShareItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_NetIncomeLossPerOutstandingGeneralPartnerUnitBasicAndDiluted"
    name="NetIncomeLossPerOutstandingGeneralPartnerUnitBasicAndDiluted"
    type="num:perShareItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_NetIncomeLossPerOutstandingSubordinatedLimitedPartnerUnitBasicAndDiluted"
    name="NetIncomeLossPerOutstandingSubordinatedLimitedPartnerUnitBasicAndDiluted"
    type="num:perShareItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_NetIncomeLossPerOutstandingUnitBasicAndDiluted"
    name="NetIncomeLossPerOutstandingUnitBasicAndDiluted"
    type="num:perShareItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_NewBuildingsSupervisionLumpSum"
    name="NewBuildingsSupervisionLumpSum"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_ObRiverMember"
    name="ObRiverMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_OperatingLeasesFutureMinimumRentalPaymentsReceivableInFiveYears"
    name="OperatingLeasesFutureMinimumRentalPaymentsReceivableInFiveYears"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_OperatingLeasesFutureMinimumRentalPaymentsReceivableInFourYears"
    name="OperatingLeasesFutureMinimumRentalPaymentsReceivableInFourYears"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_OperatingLeasesFutureMinimumRentalPaymentsReceivableInNextSixMonths"
    name="OperatingLeasesFutureMinimumRentalPaymentsReceivableInNextSixMonths"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_OperatingLeasesFutureMinimumRentalPaymentsReceivableInThreeYears"
    name="OperatingLeasesFutureMinimumRentalPaymentsReceivableInThreeYears"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_OperatingLeasesFutureMinimumRentalPaymentsReceivableInTwoYears"
    name="OperatingLeasesFutureMinimumRentalPaymentsReceivableInTwoYears"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_OperatingLeasesFutureMinimumRentalPaymentsReceivableThereafter"
    name="OperatingLeasesFutureMinimumRentalPaymentsReceivableThereafter"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_OverAllotmentMember"
    name="OverAllotmentMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_PegasusLanceSeacrownFareasternMember"
    name="PegasusLanceSeacrownFareasternMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_PegasusLanceSeacrownMember"
    name="PegasusLanceSeacrownMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_PercentageAllocationsOfAdditionalAvailableCashAmongUnitholders"
    name="PercentageAllocationsOfAdditionalAvailableCashAmongUnitholders"
    type="num:percentItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_PreferentialDeemedDividend"
    name="PreferentialDeemedDividend"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_ProceedsFromIssuanceInitialPublicOfferingNetOfIssuanceCosts"
    name="ProceedsFromIssuanceInitialPublicOfferingNetOfIssuanceCosts"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_ProceedsFromIssuanceOfCommonLimitedPartnersUnitsNetOfCommissionsAndExpenses"
    name="ProceedsFromIssuanceOfCommonLimitedPartnersUnitsNetOfCommissionsAndExpenses"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_ProceedsFromIssuanceOfGeneralPartnerUnits"
    name="ProceedsFromIssuanceOfGeneralPartnerUnits"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_QuarterlyIncreaseInDistributionPerUnit"
    name="QuarterlyIncreaseInDistributionPerUnit"
    type="num:perShareItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_ScheduleOfLossIncomePerUnitBasicAndDilutedTableTextBlock"
    name="ScheduleOfLossIncomePerUnitBasicAndDilutedTableTextBlock"
    type="nonnum:textBlockItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_SecondTargetDistributionMember"
    name="SecondTargetDistributionMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_SecurityAdvancePaymentPerVessel"
    name="SecurityAdvancePaymentPerVessel"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_SubordinatedLimitedPartnerIIMember"
    name="SubordinatedLimitedPartnerIIMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_SubordinatedLimitedPartnerMember"
    name="SubordinatedLimitedPartnerMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_SubordinatedLimitedPartnersCapitalAccount"
    name="SubordinatedLimitedPartnersCapitalAccount"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="credit"
    nillable="true" />
  <element
    id="dlng_SubordinatedLimitedPartnersCapitalAccountUnitsIssued"
    name="SubordinatedLimitedPartnersCapitalAccountUnitsIssued"
    type="xbrli:sharesItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    nillable="true" />
  <element
    id="dlng_SubordinatedLimitedPartnersCapitalAccountUnitsOutstanding"
    name="SubordinatedLimitedPartnersCapitalAccountUnitsOutstanding"
    type="xbrli:sharesItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    nillable="true" />
  <element
    id="dlng_TermsOfManagementAgreement"
    name="TermsOfManagementAgreement"
    type="xbrli:stringItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_ThereafterTargetDistributionMember"
    name="ThereafterTargetDistributionMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_ThirdTargetDistributionMember"
    name="ThirdTargetDistributionMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_TimeCharterAgreementDuration"
    name="TimeCharterAgreementDuration"
    type="xbrli:stringItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_TotalQuarterlyDistributionTargetAmountMember"
    name="TotalQuarterlyDistributionTargetAmountMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_UnderwritersOverallotmentOptionMember"
    name="UnderwritersOverallotmentOptionMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_UnithodersOfLimitedPartnershipMember"
    name="UnithodersOfLimitedPartnershipMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_VesselAccumulatedDepreciationMember"
    name="VesselAccumulatedDepreciationMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_VesselCostMember"
    name="VesselCostMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_VesselManagementAgreementFeesUpwardsAdjustmentPercentage"
    name="VesselManagementAgreementFeesUpwardsAdjustmentPercentage"
    type="num:percentItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_VesselNetBookValueMember"
    name="VesselNetBookValueMember"
    type="nonnum:domainItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_VesselOperatingExpenses"
    name="VesselOperatingExpenses"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_VesselsNet"
    name="VesselsNet"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="instant"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_VesselsNetAbstract"
    name="VesselsNetAbstract"
    type="xbrli:stringItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_VesselsNetTextBlock"
    name="VesselsNetTextBlock"
    type="nonnum:textBlockItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_VoyageExpenses"
    name="VoyageExpenses"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_VoyageExpensesRelatedParty"
    name="VoyageExpensesRelatedParty"
    type="xbrli:monetaryItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    xbrli:balance="debit"
    nillable="true" />
  <element
    id="dlng_WeightedAverageCommonLimitedPartnershipUnitsOutstanding"
    name="WeightedAverageCommonLimitedPartnershipUnitsOutstanding"
    type="xbrli:sharesItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_WeightedAverageNumberUnitsOutstandingBasicAndDilutedAbstract"
    name="WeightedAverageNumberUnitsOutstandingBasicAndDilutedAbstract"
    type="xbrli:stringItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    abstract="true"
    nillable="true" />
  <element
    id="dlng_WeightedAverageSubordinatedLimitedPartnershipUnitsOutstanding"
    name="WeightedAverageSubordinatedLimitedPartnershipUnitsOutstanding"
    type="xbrli:sharesItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
  <element
    id="dlng_WeightedAverageUnitsOutstandingBasicAndDiluted"
    name="WeightedAverageUnitsOutstandingBasicAndDiluted"
    type="xbrli:sharesItemType"
    substitutionGroup="xbrli:item"
    xbrli:periodType="duration"
    nillable="true" />
</schema>