GRAND SLAM SKIFFS HIN Decoder
Hull Identification Numbers beginning with GUY were assigned by the US Coast Guard to GRAND SLAM SKIFFS of PINELLAS PARK, FL. The company is recorded as out of business since 2003 — 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
GUY
Location
PINELLAS PARK, FL
In business
since 1993
Status
Out of business (2003)
GRAND SLAM SKIFFS hulls (1993–2003) 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 SKIFFS HIN FAQ
What does a GRAND SLAM SKIFFS HIN look like?
It starts with the three characters "GUY" — the Manufacturer Identification Code the US Coast Guard assigned to GRAND SLAM SKIFFS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. GRAND SLAM SKIFFS hulls (1993–2003) 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 SKIFFS still in business?
USCG records list GRAND SLAM SKIFFS as out of business since 2003. 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 GRAND SLAM SKIFFS 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 SKIFFS hulls (1993–2003) 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 SKIFFS HIN Decoder," carwhere.com/hin-decoder/guy, last verified 2026-06-12.