New York · Nonprofit
LONG ISLAND MARITIME MUSEUM
LONG ISLAND MARITIME MUSEUM (New York) receives grants from 8 organizations whose IRS filings report $288,958 to it, the largest being THE ERNEST AND MARILYN KUSSMAUL CHARITABLE FOUNDATION INC ($97,500). 5 of them have funded it in more than one year.
- Revenue FY2025
- $543k
- Funders on record
- 8
- Grants received
- $289k
- Net assets
- $1.2M
What Long Island Maritime Museum does
Mission
The stated purpose of the museum shall be:a.to preserve long island's maritime history and heritage for educational purposes.b.to purchase, collect, restore and preserve boats, vessels and related equipment having to do with the past and present maritime activities of long island, including but not limited to, shipbuilding, whaling, shellfishing, commercial and sportfishing, wildfowling, pleasure and competitive boating, watercraft and the ethnic heritage pertaining thereto.c.to restore, preserve, interpret, display and exhibit watercraft of historical interest, models of ships and of small craft, tools, and implements of the marine crafts and trades, wildfowling decoys, paintings, prints, maps, charts and books; and displays featuring wildlife.
As stated on its FY2025 Form 990.
Program
Preserve and care for the marine heritage museum and its related structures. To provide the public with educational programs and preserve the historical interest.
$361,268 spent$76,609 earned by the program100% of program spending
The program described on its FY2025 Form 990. Program spending in total: $361,268.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2020 to 2021, from $881k to $1.1M (+26%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2017 8% · 2018 13% · 2019 10% · 2020 28% · 2021 30% · 2022 9% · 2023 12% · 2024 25% · 2025 11%. Grants only. Government contracts and fees sit inside program revenue.
48% of LONG ISLAND MARITIME MUSEUM’s revenue is contributions — about as donation-reliant as the typical peer (64% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 3 of the last 9 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Chief executive
Teresa Blitman
Executive director
Board chair
Mike Eagan
Chairman
As listed on its FY2025 Form 990.
Who funds it, year by year
2018 → 2023: the base broadened from 1 funder to 4 funders, grant income rose $625 → $33k.
1 of 8 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 0% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of LONG ISLAND MARITIME MUSEUM’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
LONG ISLAND MARITIME MUSEUM leans on a few funders — its largest provides 34% of grant income and the top three 93%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
Largest funder’s share by year: 2018 100% · 2019 100% · 2020 67% · 2021 50% · 2022 62% · 2023 60% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
50% of LONG ISLAND MARITIME MUSEUM's funders are still giving 3 years after their first grant; 63% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
97% of LONG ISLAND MARITIME MUSEUM's grant income comes from New York funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $556 arriving through sponsors registered in 1 state is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
LONG ISLAND MARITIME MUSEUM runs a healthier operating margin than half of the 12,262 arts & culture nonprofits its size.
this organization peer median middle 50% of peers· 12,262 arts & culture nonprofits $100k–$1M, FY2025
Organizations like LONG ISLAND MARITIME MUSEUM
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In New York
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
72% of spending goes to programs.
Governance
Public support
85%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for LONG ISLAND MARITIME MUSEUM: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds LONG ISLAND MARITIME MUSEUM?
- LONG ISLAND MARITIME MUSEUM (New York) receives grants from 8 organizations whose IRS filings report $288,958 to it, the largest being THE ERNEST AND MARILYN KUSSMAUL CHARITABLE FOUNDATION INC ($97,500). 5 of them have funded it in more than one year.
- How many funders does LONG ISLAND MARITIME MUSEUM have?
- IRS filings report 8 organizations giving $288,958 in grants to LONG ISLAND MARITIME MUSEUM, 5 of which have funded it in more than one year.
- Who is the largest funder of LONG ISLAND MARITIME MUSEUM?
- THE ERNEST AND MARILYN KUSSMAUL CHARITABLE FOUNDATION INC is the largest funder on record, with $97,500 in grants. The full list of funders is on this page.
- How can an organization like LONG ISLAND MARITIME MUSEUM find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in New York. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Long Island Maritime Museum →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 8 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 22, 2026. What this page cannot tell you · view filing