GULF COAST BOATS HIN Decoder
Hull Identification Numbers beginning with GYM were assigned by the US Coast Guard to GULF COAST BOATS of MANVEL, TX. 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
GYM
Location
MANVEL, TX
In business
since 1984
Status
Listed active in USCG records
GULF COAST BOATS built hulls across both HIN eras (1984–present): 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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GULF COAST BOATS HIN FAQ
What does a GULF COAST BOATS HIN look like?
It starts with the three characters "GYM" — the Manufacturer Identification Code the US Coast Guard assigned to GULF COAST BOATS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. GULF COAST BOATS built hulls across both HIN eras (1984–present): 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 GULF COAST BOATS still in business?
USCG records list GULF COAST BOATS of MANVEL, TX in the MIC database (registered 1984).
How do I decode the year on a GULF COAST BOATS 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 BOATS built hulls across both HIN eras (1984–present): 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 TX
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "GULF COAST BOATS HIN Decoder," carwhere.com/hin-decoder/gym, last verified 2026-06-12.