SKI SUPREME HIN Decoder
Hull Identification Numbers beginning with XTB were assigned by the US Coast Guard to SKI SUPREME of WINNSBORO, LA. 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
XTB
Location
WINNSBORO, LA
In business
since 1977
Status
Out of business (2003)
Parent company
GENMAR INDUSTRIES
SKI SUPREME built hulls across both HIN eras (1977–2003): 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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SKI SUPREME HIN FAQ
What does a SKI SUPREME HIN look like?
It starts with the three characters "XTB" — the Manufacturer Identification Code the US Coast Guard assigned to SKI SUPREME — followed by a 5-character hull serial and a 4-character date code, 12 characters total. SKI SUPREME built hulls across both HIN eras (1977–2003): 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 SKI SUPREME still in business?
USCG records list SKI SUPREME as out of business since 2003 (associated with GENMAR INDUSTRIES). 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 SKI SUPREME HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. SKI SUPREME built hulls across both HIN eras (1977–2003): 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 LA
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "SKI SUPREME HIN Decoder," carwhere.com/hin-decoder/xtb, last verified 2026-06-12.