SUNDOWN BOAT WORKS HIN Decoder
Hull Identification Numbers beginning with SDU were assigned by the US Coast Guard to SUNDOWN BOAT WORKS of GOLD BEACH, OR. The builder is listed in the USCG MIC database. Enter the full 12-character HIN below for build date, model year, and serial — free, no account.
MIC
SDU
Location
GOLD BEACH, OR
In business
since 1995
Status
Listed active in USCG records
SUNDOWN BOAT WORKS hulls (1995–present) 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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SUNDOWN BOAT WORKS HIN FAQ
What does a SUNDOWN BOAT WORKS HIN look like?
It starts with the three characters "SDU" — the Manufacturer Identification Code the US Coast Guard assigned to SUNDOWN BOAT WORKS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. SUNDOWN BOAT WORKS hulls (1995–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is SUNDOWN BOAT WORKS still in business?
USCG records list SUNDOWN BOAT WORKS of GOLD BEACH, OR in the MIC database (registered 1995).
How do I decode the year on a SUNDOWN BOAT WORKS HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. SUNDOWN BOAT WORKS hulls (1995–present) 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 OR
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "SUNDOWN BOAT WORKS HIN Decoder," carwhere.com/hin-decoder/sdu, last verified 2026-06-12.