MT DESERT ISLAND BOATWORKS HIN Decoder
Hull Identification Numbers beginning with MTD were assigned by the US Coast Guard to MT DESERT ISLAND BOATWORKS of SOUTHWEST HARBR, ME. The company is recorded as out of business since 2006 — 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
MTD
Location
SOUTHWEST HARBR, ME
In business
since 1988
Status
Out of business (2006)
MT DESERT ISLAND BOATWORKS hulls (1988–2006) 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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MT DESERT ISLAND BOATWORKS HIN FAQ
What does a MT DESERT ISLAND BOATWORKS HIN look like?
It starts with the three characters "MTD" — the Manufacturer Identification Code the US Coast Guard assigned to MT DESERT ISLAND BOATWORKS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. MT DESERT ISLAND BOATWORKS hulls (1988–2006) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is MT DESERT ISLAND BOATWORKS still in business?
USCG records list MT DESERT ISLAND BOATWORKS as out of business since 2006. 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 MT DESERT ISLAND BOATWORKS HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. MT DESERT ISLAND BOATWORKS hulls (1988–2006) 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 ME
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "MT DESERT ISLAND BOATWORKS HIN Decoder," carwhere.com/hin-decoder/mtd, last verified 2026-06-12.