RYAN MARINE HIN Decoder
Hull Identification Numbers beginning with RYM were assigned by the US Coast Guard to RYAN MARINE of TARIFFVILLE, CT. The company is recorded as out of business since 1989 — 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
RYM
Location
TARIFFVILLE, CT
In business
since 1974
Status
Out of business (1989)
RYAN MARINE built hulls across both HIN eras (1974–1989): 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.
Free · no account · the HIN is on the transom, upper starboard (right) corner
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RYAN MARINE HIN FAQ
What does a RYAN MARINE HIN look like?
It starts with the three characters "RYM" — the Manufacturer Identification Code the US Coast Guard assigned to RYAN MARINE — followed by a 5-character hull serial and a 4-character date code, 12 characters total. RYAN MARINE built hulls across both HIN eras (1974–1989): 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 RYAN MARINE still in business?
USCG records list RYAN MARINE as out of business since 1989. 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 RYAN MARINE HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. RYAN MARINE built hulls across both HIN eras (1974–1989): 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.
Other builders in CT
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "RYAN MARINE HIN Decoder," carwhere.com/hin-decoder/rym, last verified 2026-06-12.