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        <OtherCostOrOtherBasisAmt>15399711</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>8264562</DepreciationAmt>
        <BookValueAmt>7135149</BookValueAmt>
      </BuildingsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>1899859</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>1062178</DepreciationAmt>
        <BookValueAmt>837681</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>148636</OtherCostOrOtherBasisAmt>
        <BookValueAmt>148636</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>8121466</TotalBookValueLandBuildingsAmt>
      <TotalRevEtcAuditedFinclStmtAmt>2684253</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>-1452932</NetUnrealizedGainsInvstAmt>
      <OtherRevenueAmt>-12961</OtherRevenueAmt>
      <RevenueNotReportedAmt>-1465893</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>4150146</RevenueSubtotalAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>4150146</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>4396704</TotExpnsEtcAuditedFinclStmtAmt>
      <OtherExpensesIncludedAmt>108504</OtherExpensesIncludedAmt>
      <ExpensesNotReportedAmt>108504</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>4288200</ExpensesSubtotalAmt>
      <ExpensesNotRptFinclStmtAmt>0</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>4288200</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part III, Line 1a:</FormAndLineReferenceDesc>
        <ExplanationTxt>Collection items purchased and donated are not included in the balance sheet The costs of collection items are recorded as decreases in net assets in the statement of activities when purchased. The proceeds from the sale of collection items are recorded as increases in net assets in the statement of activities when sold. The Museum's extensive collection includes artifacts relating to the maritime history of Maine and its associated shoreline infrastructure. The collection includes many early 19th Century paintings and other artwork, rigged models and half models, tools used in maritime industries, important collections of navigating equipment, scrimshaw, furniture, textiles, fishing gear, ships parts, and a strong historic watercraft collection. The Museum also preserves and interprets several historic buildings and structures, including five buildings from the Percy &amp; Small Shipyard (1897-1920), and the historic Donnell House, which once belonged to a shipyard owner. The library and archives house thousands of books, maritime manuscripts, business records, photographs, maps and charts, ships construction plans, and video and film archives. The Museum adopted a new Code of Ethics statement during 2007 (and amended during 2009) that is in accordance with the American Association of Museums guidelines and other museum industry best practices. It also has a collection policy. These policies delineate responsibilities in such matters as Museum ethics, acquisitions, loans, care of collections, and deaccessioning objects held in the collection are carefully tracked and monitored. Proceeds from the sale of an object deaccessioned may only be applied toward further collection acquisitions.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part III, Line 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>The Museums extensive collection includes artifacts relating to the maritime history of Maine and its associated shoreline infrastructure. The collection includes many early 19th Century paintings and other artwork, rigged models and half models, tools used in maritime industries, important collections of navigating equipment, scrimshaw, furniture, textiles, fishing gear, and ships parts, and a strong historic watercraft collection. The Museum also preserves and interprets several historic buildings and structures, including five buildings from the Percy &amp; Small Shipyard (1897-1920), and the historic Donnell House, which once belonged to a shipyard owner. The library and archives house thousands of books, maritime manuscripts, business records, photographs, maps and charts, ships construction plans, and video and film archives. These exhibits aid in promoting an understanding of Maine maritime history among the general public.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part V, Line 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>The intended uses of the Organizations endowment funds are for collection preservation, building maintenance, and educational purposes.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XI, Line 2d - Other Adjustments:</FormAndLineReferenceDesc>
        <ExplanationTxt>Cost of goods sold 108,504. Change in value of split interest agreements -121,465.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XII, Line 2d - Other Adjustments:</FormAndLineReferenceDesc>
        <ExplanationTxt>Cost of goods sold 108,504.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="RetDoc1041300001">
      <FundraisingEventInformationGrp>
        <Event1Nm>Gala</Event1Nm>
        <GrossReceiptsEvent1Amt>217218</GrossReceiptsEvent1Amt>
        <CharitableContriEvent1Amt>102550</CharitableContriEvent1Amt>
        <GrossRevenueEvent1Amt>114668</GrossRevenueEvent1Amt>
        <OtherDirectExpensesEvent1Amt>86630</OtherDirectExpensesEvent1Amt>
        <GrossReceiptsTotalAmt>217218</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>102550</CharitableContributionsTotAmt>
        <GrossRevenueTotalEventsAmt>114668</GrossRevenueTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>86630</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>86630</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>28038</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleM documentId="RetDoc1042900001">
      <BoatsAndPlanesGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>2</ContributionCnt>
        <NoncashContributionsRptF990Amt>223200</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>Appraisal</MethodOfDeterminingRevenuesTxt>
      </BoatsAndPlanesGrp>
      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>10</ContributionCnt>
        <NoncashContributionsRptF990Amt>32098</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>Market</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <HistoricalArtifactsGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>20</ContributionCnt>
        <NoncashContributionsRptF990Amt>0</NoncashContributionsRptF990Amt>
      </HistoricalArtifactsGrp>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>1</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>1</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 32b:</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization sells contributions of securities through its investment broker All gifts of securities are sold as soon as administratively possible. Sales of boats are done through yacht brokers on the Organizations behalf.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 33:</FormAndLineReferenceDesc>
        <ExplanationTxt>Collection items purchased and donated are not included in the balance sheet The costs of collection items are recorded as decreases in net assets in the statement of activities when purchased The proceeds from the sale of collection items are recorded as increases in net assets in the statement of activities when sold.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>A copy of the Form 990 is made available for the Board of Trustees to review and the appropriate persons sign and submit the return.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>At the June meeting of incoming and departing trustees, the chair of the board states the policy and the executive director confirms. Additionally, at the start of each board member meeting there is an opportunity for any Individual to come forward to publicly or privately announce a potential conflict of interest.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>In 2023 a new executive director was hired. The Museum's Board of Directors utilized an executive search consulting firm to assist in the recruitment process and to ensure that the compensation and benefits offered to the new executive director were competitive and consistent with those of executive directors at other comparable museums. The Museum also partakes in several comparability surveys to gather Information for the board to evaluate the executive director's salary. The Board of Directors reviewed and approved the offer made to the new executive director. Each year staff salaries may be adjusted for increases in cost of living. The board of directors determines the amount of the cost of living increase. That increase is then voted on and approved by the board. Adjustments may also be made to staff compensation based on an annual performance evaluation.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>The Organization makes its governing documents, conflict of interest policy and financial statements available to the public upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>Exhibit preparation: Program service expenses 43,435. Management and general expenses 0. Fundraising expenses 0. Total expenses 43,435. Maintenance contract: Program service expenses 235,027. Management and general expenses 0. Fundraising expenses 0. Total expenses 235,027. Other services: Program service expenses 73,349. Management and general expenses 124,647. Fundraising expenses 19,896. Total expenses 217,892.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, line 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>Change in value of beneficial interest in trusts -121,465.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
