GROWN BOATS HIN Decoder
Hull Identification Numbers beginning with GRO were assigned by the US Coast Guard to GROWN BOATS of KEY WEST, FL. 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
GRO
Location
KEY WEST, FL
In business
since 2014
Status
Listed active in USCG records
GROWN BOATS hulls (2014–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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GROWN BOATS HIN FAQ
What does a GROWN BOATS HIN look like?
It starts with the three characters "GRO" — the Manufacturer Identification Code the US Coast Guard assigned to GROWN BOATS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. GROWN BOATS hulls (2014–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is GROWN BOATS still in business?
USCG records list GROWN BOATS of KEY WEST, FL in the MIC database (registered 2014).
How do I decode the year on a GROWN BOATS HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. GROWN BOATS hulls (2014–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 FL
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "GROWN BOATS HIN Decoder," carwhere.com/hin-decoder/gro, last verified 2026-06-12.