Liabilities / Assets
21st percentile
Higher debt load relative to assets than 21% of similar nonprofits.
EIN 22-3291586 • 501(c)3 • Nahant, MA
Profile
Maintain & exhibit historic landmark "luna" tugboat
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
21st percentile
Higher debt load relative to assets than 21% of similar nonprofits.
Liabilities / Revenue
67th percentile
Higher debt load relative to revenue than 67% of similar nonprofits.
Net Margin
2nd percentile
Higher net margin than 2% of similar nonprofits.
Top Officer Pay
40th percentile
Higher top officer pay than 40% of similar nonprofits.
Top officer pay equals 0.0% of source-year revenue.
Asset Growth
37th percentile
Faster asset growth than 37% of similar nonprofits.
Revenue Growth
75th percentile
Faster revenue growth than 75% of similar nonprofits.
Assets
Down$2,237,845
Down $9,389 (-0.4%) from 2023
Liabilities
Flat$1,500
Flat from 2023
Net Assets
Down$2,236,345
Down $9,389 (-0.4%) from 2023
Revenue
Up$7,277
Up $1,736 (+31%) from 2023
Expenses
Down$22,630
Down $20,089 (-47%) from 2023
Net Income
Up-$15,353
Up $21,825 (+59%) from 2023
Most recent year
2024 • Form 990XML pending. An XML filing is linked for this year, but detailed extraction is still pending.
The latest 2024 filing currently has linked XML that has not been fully parsed yet. Showing the latest detailed filing from 2021 below.
Maintain & exhibit the national historic landmark "luna" tugboat.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Savings and Temporary Cash Investments | $294,153 | $287,042 | ▼ $7,111 |
| Investments in Publicly Traded Securities | $83,347 | $92,930 | ▲ $9,583 |
| Total Assets | $2,312,699 | $2,315,171 | ▲ $2,472 |
| Other Assets Total | $1,935,199 | $1,935,199 | → $0 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $1,501 | $1,501 | → $0 |
| Total Liabilities | $1,501 | $1,501 | → $0 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $2,311,198 | $2,313,670 | ▲ $2,472 |
| Total Net Assets Fund Balance | $2,311,198 | $2,313,670 | ▲ $2,472 |
| Total Liabilities and Net Assets / Fund Balance | $2,312,699 | $2,315,171 | ▲ $2,472 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Other Assets Org | $16,704 | - | - |
| Name | Title |
|---|---|
| Michael Rauworth | President/tr |
| Kurt Hasselbalch | Director |
| Thomas Sullivan | Clerk |
| Line Item | Amount |
|---|---|
| Other Expenses | $7,863 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Salaries, Compensation, and Employee Benefits | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Insurance | $3,575 | $1,046 | - | $4,621 |
| Other Expenses | $264 | - | - | $264 |
| Total Functional Expenses | $6,817 | $1,046 | $0 | $7,863 |
| Line Item | Amount |
|---|---|
| Expenses per Audited Statements | $7,863 |
| Total Expenses per Audited Statements | $7,863 |
| Total Expenses per Form 990 | $7,863 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
“Officers review 990 before authorizing and signing off on the 990.”
“The organization requires annual disclosure of any conflicts. Any potential conflicts would be addressed by the independent members of the board.”
“Governance and organizational documents are available upon request.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 1501 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 1501 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | MAINTAIN & EXHIBIT THE NATIONAL HISTORIC LANDMARK "LUNA" TUGBOAT. |
| IRS990/AllOtherContributionsAmt | 0 | 750 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | MICHAEL RAUWORTH |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6172771101 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 31 SUMMER STREET |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | NAHANT |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 01908 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | false |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 750 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 9030 |
| IRS990/CYOtherExpensesAmt | 0 | 7863 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 1917 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/CYTotalExpensesAmt | 0 | 7863 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 9780 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/Desc | 0 | MAINTAIN AND REFURBISH AS NEEDED THE NATIONAL HISTORIC LANDMARK TUGBOAT "LUNA". |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | false |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 6817 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | KURT HASSELBALCH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | MICHAEL RAUWORTH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | THOMAS SULLIVAN |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | PRESIDENT/TR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | CLERK |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 1992 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedInd | 0 | false |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/GainOrLossGrp/OtherAmt | 0 | 6933 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 6 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossAmountSalesAssetsGrp/OtherAmt | 0 | 6933 |
| IRS990/GrossReceiptsAmt | 0 | 9780 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 6 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 1046 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 3575 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 4621 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 2097 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 2097 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 83347 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 92930 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LegalDomicileStateCd | 0 | MA |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | MAINTAIN & EXHIBIT THE NATIONAL HISTORIC LANDMARK "LUNA" TUGBOAT. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 2311198 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 2313670 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 6933 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 6933 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 555 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 2311198 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 2313670 |
| IRS990/NoListedPersonsCompensatedInd | 0 | X |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 1935199 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 1935199 |
| IRS990/OtherExpensesGrp/Desc | 0 | TUGBOAT REPAIR/MAINT |
| IRS990/OtherExpensesGrp/Desc | 1 | INTERNET/WEBSITE |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 2978 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 264 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 2978 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 264 |
| IRS990/OtherWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrincipalOfficerNm | 0 | MICHAEL RAUWORTH |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 68636 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYInvestmentIncomeAmt | 0 | 3695 |
| IRS990/PYOtherExpensesAmt | 0 | 140716 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -68385 |
| IRS990/PYTotalExpensesAmt | 0 | 140716 |
| IRS990/PYTotalRevenueAmt | 0 | 72331 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 1917 |
| IRS990/RegularMonitoringEnfrcInd | 0 | true |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | false |
| IRS990/ReportOtherAssetsInd | 0 | true |
| IRS990/ReportOtherLiabilitiesInd | 0 | false |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 294153 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 287042 |
| IRS990ScheduleA/FactsAndCircumstancesTestTxt | 0 | THE LUNA PRESERVATION SOCIETY'S ("LPS") CORE MISSION IS TO RESCUE, REHABILITATE, AND PRESENT THE NATIONAL HISTORIC LANDMARK TUGBOAT LUNA FOR THE BENEFIT OF THE GENERAL PUBLIC. SINCE RESCUING THE LANDMARK IN 1995, IT HAS SUCCEEDED IN THE RESCUE AND REHABILITATION ELEMENTS AND IS NOW ABLE TO PRESENT IT TO THE PUBLIC. LPS IS WHOLLY RELIANT UPON GIFTS (BOTH MONETARY AND IN-KIND) AND GRANTS. LPS HAS RECEIVED SIGNIFICANT FINANCIAL SUPPORT FROM FEDERAL AND STATE AUTHORITIES, PUBLIC AND PRIVATE CHARITABLE ORGANIZATIONS AND FROM THE GENERAL PUBLIC, INCLUDING MANY IN- KIND GRANTS - MOST NOTABLY A PERMANENT HOME AT THE CHARLESTOWN NAVY SHIPYARD, ITSELF A NATIONAL HISTORIC SITE THAT IS PARTIALLY PRESENTED BY THE NATIONAL PARK SERVICE AND PARTIALLY OPERATED BY THE BOSTON REDEVELOPMENT AUTHORITY. THIS SUPPORT AND GRANTS-IN-KIND ILLUSTRATE THE DIVERSIFICATION OF OUR BASE OF SUPPORT BY PUBLIC AND GOVERNMENTAL ENTITIES, AND THE TRULY PUBLIC NATURE OF OUR CHARITABLE ACTIVITIES AND MISSION. THE LUNA IS A PUBLIC FACILITY PROVIDED DIRECTLY AND WHOLLY FOR PUBLIC BENEFIT. NOW OPEN FOR PUBLIC VISITATION, IT IS ESSENTIALLY A FLOATING MUSEUM, BERTHED IN THE SAME SHIPYARD AS THE USS CONSTITUTION. FURTHERMORE, THE LUNA IS OPEN TO THE GENERAL PUBLIC AND ABLE TO HOST GROUPS OF STUDENTS, ADULTS AND OTHER CONSTITUENCIES. IN THE NEXT FEW YEARS, THE TUGBOAT LUNA WILL BE MOVED AND GIFTED TO MYSTIC SEAPORT, A PUBLIC CHARITY, IN ORDER TO INCREASE VISIBILITY AND TOURISM. |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 0 | THE LUNA PRESERVATION SOCIETY'S ("LPS") CORE MISSION IS TO RESCUE, REHABILITATE, AND PRESENT THE NATIONAL HISTORIC LANDMARK TUGBOAT LUNA FOR THE BENEFIT OF THE GENERAL PUBLIC. SINCE RESCUING THE LANDMARK IN 1995, IT HAS SUCCEEDED IN THE RESCUE AND REHABILITATION ELEMENTS AND IS NOW ABLE TO PRESENT IT TO THE PUBLIC. LPS IS WHOLLY RELIANT UPON GIFTS (BOTH MONETARY AND IN-KIND) AND GRANTS. LPS HAS RECEIVED SIGNIFICANT FINANCIAL SUPPORT FROM FEDERAL AND STATE AUTHORITIES, PUBLIC AND PRIVATE CHARITABLE ORGANIZATIONS AND FROM THE GENERAL PUBLIC, INCLUDING MANY IN- KIND GRANTS - MOST NOTABLY A PERMANENT HOME AT THE CHARLESTOWN NAVY SHIPYARD, ITSELF A NATIONAL HISTORIC SITE THAT IS PARTIALLY PRESENTED BY THE NATIONAL PARK SERVICE AND PARTIALLY OPERATED BY THE BOSTON REDEVELOPMENT AUTHORITY. THIS SUPPORT AND GRANTS-IN-KIND ILLUSTRATE THE DIVERSIFICATION OF OUR BASE OF SUPPORT BY PUBLIC AND GOVERNMENTAL ENTITIES, AND THE TRULY PUBLIC NATURE OF OUR CHARITABLE ACTIVITIES AND MISSION. THE LUNA IS A PUBLIC FACILITY PROVIDED DIRECTLY AND WHOLLY FOR PUBLIC BENEFIT. NOW OPEN FOR PUBLIC VISITATION, IT IS ESSENTIALLY A FLOATING MUSEUM, BERTHED IN THE SAME SHIPYARD AS THE USS CONSTITUTION. FURTHERMORE, THE LUNA IS OPEN TO THE GENERAL PUBLIC AND ABLE TO HOST GROUPS OF STUDENTS, ADULTS AND OTHER CONSTITUENCIES. IN THE NEXT FEW YEARS, THE TUGBOAT LUNA WILL BE MOVED AND GIFTED TO MYSTIC SEAPORT, A PUBLIC CHARITY, IN ORDER TO INCREASE VISIBILITY AND TOURISM. |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 1 | THE LUNA PRESERVATION SOCIETY'S ("LPS") CORE MISSION IS TO RESCUE, REHABILITATE, AND PRESENT THE NATIONAL HISTORIC LANDMARK TUGBOAT LUNA FOR THE BENEFIT OF THE GENERAL PUBLIC. SINCE RESCUING THE LANDMARK IN 1995, IT HAS SUCCEEDED IN THE RESCUE AND REHABILITATION ELEMENTS AND IS NOW ABLE TO PRESENT IT TO THE PUBLIC. LPS IS WHOLLY RELIANT UPON GIFTS (BOTH MONETARY AND IN-KIND) AND GRANTS. LPS HAS RECEIVED SIGNIFICANT FINANCIAL SUPPORT FROM FEDERAL AND STATE AUTHORITIES, PUBLIC AND PRIVATE CHARITABLE ORGANIZATIONS AND FROM THE GENERAL PUBLIC, INCLUDING MANY IN- KIND GRANTS - MOST NOTABLY A PERMANENT HOME AT THE CHARLESTOWN NAVY SHIPYARD, ITSELF A NATIONAL HISTORIC SITE THAT IS PARTIALLY PRESENTED BY THE NATIONAL PARK SERVICE AND PARTIALLY OPERATED BY THE BOSTON REDEVELOPMENT AUTHORITY. THIS SUPPORT AND GRANTS-IN-KIND ILLUSTRATE THE DIVERSIFICATION OF OUR BASE OF SUPPORT BY PUBLIC AND GOVERNMENTAL ENTITIES, AND THE TRULY PUBLIC NATURE OF OUR CHARITABLE ACTIVITIES AND MISSION. THE LUNA IS A PUBLIC FACILITY PROVIDED DIRECTLY AND WHOLLY FOR PUBLIC BENEFIT. NOW OPEN FOR PUBLIC VISITATION, IT IS ESSENTIALLY A FLOATING MUSEUM, BERTHED IN THE SAME SHIPYARD AS THE USS CONSTITUTION. FURTHERMORE, THE LUNA IS OPEN TO THE GENERAL PUBLIC AND ABLE TO HOST GROUPS OF STUDENTS, ADULTS AND OTHER CONSTITUENCIES. IN THE NEXT FEW YEARS, THE TUGBOAT LUNA WILL BE MOVED AND GIFTED TO MYSTIC SEAPORT, A PUBLIC CHARITY, IN ORDER TO INCREASE VISIBILITY AND TOURISM. |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 0 | PART II, LINE 17A |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 1 | PART II, LINE 17B |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 750 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 68636 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 241299 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 181225 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 73875 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 565785 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/CurrentTaxYearAmt | 0 | 36250 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/CurrentTaxYearMinus1YearAmt | 0 | 36250 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 36250 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 36250 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 36250 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/TotalAmt | 0 | 181250 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 2097 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 3695 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 2892 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 2832 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 390 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 11906 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0.28290 |
| IRS990ScheduleA/PublicSupportPY170Pct | 0 | 0.26550 |
| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 214739 |
| IRS990ScheduleA/SubstantialContributorsTotAmt | 0 | 532296 |
| IRS990ScheduleA/TenPctFactsCrcmstncsTestCYInd | 0 | X |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt | 0 | 37000 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt | 0 | 104886 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 277549 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 217475 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 110125 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 747035 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 758941 |
| IRS990/ScheduleBRequiredInd | 0 | false |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 7863 |
| IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt | 0 | 1516697 |
| IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt | 1 | 297920 |
| IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt | 2 | 82160 |
| IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt | 3 | 21718 |
| IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt | 4 | 16704 |
| IRS990ScheduleD/OtherAssetsOrgGrp/Desc | 0 | TUGBOAT "LUNA" |
| IRS990ScheduleD/OtherAssetsOrgGrp/Desc | 1 | DOCK |
| IRS990ScheduleD/OtherAssetsOrgGrp/Desc | 2 | TUGBOAT ARTIFACTS & FITTINGS |
| IRS990ScheduleD/OtherAssetsOrgGrp/Desc | 3 | PUMP SYSTEM |
| IRS990ScheduleD/OtherAssetsOrgGrp/Desc | 4 | DOCK EQUIPMENT |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 9780 |
| IRS990ScheduleD/TotalBookValueOtherAssetsAmt | 0 | 1935199 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 7863 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 9780 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 9780 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 7863 |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | OFFICERS REVIEW 990 BEFORE AUTHORIZING AND SIGNING OFF ON THE 990. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | THE ORGANIZATION REQUIRES ANNUAL DISCLOSURE OF ANY CONFLICTS. ANY POTENTIAL CONFLICTS WOULD BE ADDRESSED BY THE INDEPENDENT MEMBERS OF THE BOARD. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | GOVERNANCE AND ORGANIZATIONAL DOCUMENTS ARE AVAILABLE UPON REQUEST. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990, PAGE 6, PART VI, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PAGE 6, PART VI, LINE 12C |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PAGE 6, PART VI, LINE 19 |
| IRS990/SchoolOperatingInd | 0 | false |
| IRS990/SignificantChangeInd | 0 | false |
| IRS990/SignificantNewProgramSrvcInd | 0 | false |
| IRS990/StatesWhereCopyOfReturnIsFldCd | 0 | MA |
| IRS990/SubjectToExcsTaxNetInvstIncInd | 0 | false |
| IRS990/SubjectToProxyTaxInd | 0 | false |
| IRS990/SubjToTaxRmnrtnExPrchtPymtInd | 0 | false |
| IRS990/TaxablePartyNotificationInd | 0 | false |
| IRS990/TaxExemptBondsInd | 0 | false |
| IRS990/TerminateOperationsInd | 0 | false |
| IRS990/TotalAssetsBOYAmt | 0 | 2312699 |
| IRS990/TotalAssetsEOYAmt | 0 | 2315171 |
| IRS990/TotalAssetsGrp/BOYAmt | 0 | 2312699 |
| IRS990/TotalAssetsGrp/EOYAmt | 0 | 2315171 |
| IRS990/TotalCompGreaterThan150KInd | 0 | false |
| IRS990/TotalContributionsAmt | 0 | 750 |
| IRS990/TotalEmployeeCnt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 1046 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 6817 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 7863 |
| IRS990/TotalGrossUBIAmt | 0 | 0 |
| IRS990/TotalLiabilitiesBOYAmt | 0 | 1501 |
| IRS990/TotalLiabilitiesEOYAmt | 0 | 1501 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 1501 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 1501 |
| IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt | 0 | 2311198 |
| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 2313670 |
| IRS990/TotalProgramServiceExpensesAmt | 0 | 6817 |
| IRS990/TotalRevenueGrp/ExclusionAmt | 0 | 9030 |
| IRS990/TotalRevenueGrp/TotalRevenueColumnAmt | 0 | 9780 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt | 0 | 2312699 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt | 0 | 2315171 |
| IRS990/TrnsfrExmptNonChrtblRltdOrgInd | 0 | false |
| IRS990/TypeOfOrganizationCorpInd | 0 | X |
| IRS990/UnrelatedBusIncmOverLimitInd | 0 | false |
| IRS990/UponRequestInd | 0 | X |
| IRS990/USAddress/AddressLine1Txt | 0 | 31 SUMMER STREET |
| IRS990/USAddress/CityNm | 0 | NAHANT |
| IRS990/USAddress/StateAbbreviationCd | 0 | MA |
| IRS990/USAddress/ZIPCd | 0 | 01908 |
| IRS990/VotingMembersGoverningBodyCnt | 0 | 6 |
| IRS990/VotingMembersIndependentCnt | 0 | 6 |
| IRS990/WebsiteAddressTxt | 0 | WWW.TUGBOATLUNA.ORG |
| IRS990/WhistleblowerPolicyInd | 0 | false |
| ReturnHeader/BuildTS | 0 | 2022-09-23 18:48:47Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | true |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | MICHAEL RAUWORTH |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | PRESIDENT/TREASURER |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 6177309776 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2022-11-09 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | LUNA PRESERVATION SOCIETY INC |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | LUNA |
| ReturnHeader/Filer/EIN | 0 | 223291586 |
| ReturnHeader/Filer/PhoneNum | 0 | 6172771101 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | 31 SUMMER STREET |
| ReturnHeader/Filer/USAddress/CityNm | 0 | NAHANT |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | MA |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 01908 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 272630858 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | GONZALEZ AND ASSOCIATES PC |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 14 PAGE TERRACE |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | STOUGHTON |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | MA |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 02072 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 7813441040 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2022-11-10 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | LILLIAN GONZALEZ CPA MST CSEP CSRP |
| ReturnHeader/ReturnTs | 0 | 2022-11-11T08:54:27-05:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990 |
| ReturnHeader/SigningOfficerGrp/PersonFullName/PersonFirstNm | 0 | MICHAEL |
| ReturnHeader/SigningOfficerGrp/PersonFullName/PersonLastNm | 0 | RAUWORTH |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2021-01-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2021-12-31 |
| ReturnHeader/TaxYr | 0 | 2021 |
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