MARK TWAIN HIN Decoder
Hull Identification Numbers beginning with MAE were assigned by the US Coast Guard to MARK TWAIN of BOCA RATON, FL. The company is recorded as out of business since 1994 — 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
MAE
Location
BOCA RATON, FL
In business
since 1991
Status
Out of business (1994)
MARK TWAIN hulls (1991–1994) 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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MARK TWAIN HIN FAQ
What does a MARK TWAIN HIN look like?
It starts with the three characters "MAE" — the Manufacturer Identification Code the US Coast Guard assigned to MARK TWAIN — followed by a 5-character hull serial and a 4-character date code, 12 characters total. MARK TWAIN hulls (1991–1994) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is MARK TWAIN still in business?
USCG records list MARK TWAIN as out of business since 1994. 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 MARK TWAIN HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. MARK TWAIN hulls (1991–1994) 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, "MARK TWAIN HIN Decoder," carwhere.com/hin-decoder/mae, last verified 2026-06-12.