GRAND SLAM BOATS LLC HIN Decoder
Hull Identification Numbers beginning with GSB were assigned by the US Coast Guard to GRAND SLAM BOATS LLC of PLANTATION, 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
GSB
Location
PLANTATION, FL
In business
since 2019
Status
Listed active in USCG records
GRAND SLAM BOATS LLC hulls (2019–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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GRAND SLAM BOATS LLC HIN FAQ
What does a GRAND SLAM BOATS LLC HIN look like?
It starts with the three characters "GSB" — the Manufacturer Identification Code the US Coast Guard assigned to GRAND SLAM BOATS LLC — followed by a 5-character hull serial and a 4-character date code, 12 characters total. GRAND SLAM BOATS LLC hulls (2019–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is GRAND SLAM BOATS LLC still in business?
USCG records list GRAND SLAM BOATS LLC of PLANTATION, FL in the MIC database (registered 2019).
How do I decode the year on a GRAND SLAM BOATS LLC HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. GRAND SLAM BOATS LLC hulls (2019–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, "GRAND SLAM BOATS LLC HIN Decoder," carwhere.com/hin-decoder/gsb, last verified 2026-06-12.