MAR CRUISERS HIN Decoder — MIC RJF
Hull Identification Numbers beginning with RJF were assigned by the US Coast Guard to MAR CRUISERS of DANBURY, CT. The company is recorded as out of business since 2003 — common for older hulls, and useful to know when hunting parts or records. Enter the full 12-character HIN below for build date, model year, and serial — free, no account.
MIC
RJF
Location
DANBURY, CT
In business
since 1976
Status
Out of business (2003)
MAR CRUISERS built hulls across both HIN eras (1976–2003): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three.
How a MAR CRUISERS HIN breaks down
A current-format (1984–present) Hull Identification Number is 12 characters. Using the example RJF45678D424 (illustrative):
| Characters | Segment | In example | What it identifies |
|---|---|---|---|
| 1–3 | Manufacturer (MIC) | RJF | Identifies MAR CRUISERS, assigned by the US Coast Guard. |
| 4–8 | Hull serial number | 45678 | MAR CRUISERS's own production number for the specific hull (the letters I, O, Q are never used). |
| 9 | Certification month | D | Month built — A=January … L=December (D = April). |
| 10 | Certification year | 4 | Last digit of the certification year. |
| 11–12 | Model year | 24 | The boat’s model year. |
Free · no account · the HIN is on the transom, upper starboard (right) corner
Buying this MAR CRUISERS? Check it before you pay.
MAR CRUISERS is recorded out of business (2003) — which affects recalls, parts support, and resale. The $9.99 Boat Report adds the full CPSC marine-recall check, a HIN consistency check, a verify-before-you-buy checklist, and the USCG builder record for this hull — one downloadable report, one-time, no subscription. See what's included
MAR CRUISERS HIN FAQ
What does a MAR CRUISERS HIN look like?
It starts with the three characters "RJF" — the Manufacturer Identification Code the US Coast Guard assigned to MAR CRUISERS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. MAR CRUISERS built hulls across both HIN eras (1976–2003): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three.
Is MAR CRUISERS still in business?
USCG records list MAR CRUISERS as out of business since 2003. That's common for older hulls — the HIN still decodes normally, and the out-of-business date helps date the boat and guides parts-hunting toward salvage and owner groups rather than a dealer network.
How do I decode the year on a MAR CRUISERS HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. MAR CRUISERS built hulls across both HIN eras (1976–2003): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three. Enter the full 12-character HIN above and the decoder works it out, including the legacy formats.
Where is the HIN on a MAR CRUISERS boat?
On the outside upper-starboard (right) corner of the transom, within two inches of the top — required by 33 CFR 181.29. Since August 1984 an identical duplicate HIN is also molded into an unexposed interior location as an anti-theft measure. Both should match the title, registration, and insurance card exactly.
Is the "RJF" MIC the same as a MAR CRUISERS serial number?
No. "RJF" is the Manufacturer Identification Code — characters 1–3 of the HIN — that identifies MAR CRUISERS. The hull serial number is characters 4–8: MAR CRUISERS's own production number for that specific boat (the letters I, O, and Q are never used). The full 12-character HIN combines the MIC, the serial, and the date code.
Can a MAR CRUISERS HIN tell me the exact model?
Not on its own. A HIN encodes the builder, hull serial, certification month/year, and model year — not the model name or length. Match the decoded year and serial against MAR CRUISERS records, the title, or a marine survey to confirm the exact model and configuration.
Other builders in CT
Sources: verified against the USCG Manufacturer Identification Code database (refreshed monthly) · HIN format per 33 CFR Part 181, Subpart C. Reviewed by Sam Reynolds, Lead Researcher, CarWhere. Cite this page: CarWhere, "MAR CRUISERS HIN Decoder," carwhere.com/hin-decoder/rjf, last verified 2026-06-15.