EXTREME INTERNATIONAL HIN Decoder
Hull Identification Numbers beginning with EXR were assigned by the US Coast Guard to EXTREME INTERNATIONAL of COSTA MESA, CA. The company is recorded as out of business since 1993 — 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
EXR
Location
COSTA MESA, CA
In business
since 1992
Status
Out of business (1993)
EXTREME INTERNATIONAL hulls (1992–1993) 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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EXTREME INTERNATIONAL HIN FAQ
What does a EXTREME INTERNATIONAL HIN look like?
It starts with the three characters "EXR" — the Manufacturer Identification Code the US Coast Guard assigned to EXTREME INTERNATIONAL — followed by a 5-character hull serial and a 4-character date code, 12 characters total. EXTREME INTERNATIONAL hulls (1992–1993) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is EXTREME INTERNATIONAL still in business?
USCG records list EXTREME INTERNATIONAL as out of business since 1993. 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 EXTREME INTERNATIONAL HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. EXTREME INTERNATIONAL hulls (1992–1993) 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 CA
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "EXTREME INTERNATIONAL HIN Decoder," carwhere.com/hin-decoder/exr, last verified 2026-06-12.