OYSTER BAY BOAT WORKS HIN Decoder
Hull Identification Numbers beginning with OST were assigned by the US Coast Guard to OYSTER BAY BOAT WORKS of JACKSONVILLE, FL. The company is recorded as out of business since 1997 — 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
OST
Location
JACKSONVILLE, FL
In business
since 1990
Status
Out of business (1997)
OYSTER BAY BOAT WORKS hulls (1990–1997) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Free · no account · the HIN is on the transom, upper starboard (right) corner
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OYSTER BAY BOAT WORKS HIN FAQ
What does a OYSTER BAY BOAT WORKS HIN look like?
It starts with the three characters "OST" — the Manufacturer Identification Code the US Coast Guard assigned to OYSTER BAY BOAT WORKS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. OYSTER BAY BOAT WORKS hulls (1990–1997) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is OYSTER BAY BOAT WORKS still in business?
USCG records list OYSTER BAY BOAT WORKS as out of business since 1997. 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 OYSTER BAY BOAT WORKS HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. OYSTER BAY BOAT WORKS hulls (1990–1997) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits. Enter the full 12-character HIN above and the decoder works it out, including the legacy formats.
Other builders in FL
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "OYSTER BAY BOAT WORKS HIN Decoder," carwhere.com/hin-decoder/ost, last verified 2026-06-12.