GULF COAST SHIPYARD GROUP INC HIN Decoder
Hull Identification Numbers beginning with TYY were assigned by the US Coast Guard to GULF COAST SHIPYARD GROUP INC of GULFPORT, MS. The builder is listed in the USCG MIC database. Enter the full 12-character HIN below for build date, model year, and serial — free, no account.
MIC
TYY
Location
GULFPORT, MS
In business
since 1991
Status
Listed active in USCG records
GULF COAST SHIPYARD GROUP INC hulls (1991–present) 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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GULF COAST SHIPYARD GROUP INC HIN FAQ
What does a GULF COAST SHIPYARD GROUP INC HIN look like?
It starts with the three characters "TYY" — the Manufacturer Identification Code the US Coast Guard assigned to GULF COAST SHIPYARD GROUP INC — followed by a 5-character hull serial and a 4-character date code, 12 characters total. GULF COAST SHIPYARD GROUP INC hulls (1991–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is GULF COAST SHIPYARD GROUP INC still in business?
USCG records list GULF COAST SHIPYARD GROUP INC of GULFPORT, MS in the MIC database (registered 1991).
How do I decode the year on a GULF COAST SHIPYARD GROUP INC HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. GULF COAST SHIPYARD GROUP INC hulls (1991–present) 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 MS
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "GULF COAST SHIPYARD GROUP INC HIN Decoder," carwhere.com/hin-decoder/tyy, last verified 2026-06-12.