SEA OX BOATS HIN Decoder
Hull Identification Numbers beginning with YSO were assigned by the US Coast Guard to SEA OX BOATS of MIDWAY, AR. The company is recorded as out of business since 2002 — 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
YSO
Location
MIDWAY, AR
In business
since 1999
Status
Out of business (2002)
SEA OX BOATS hulls (1999–2002) 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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SEA OX BOATS HIN FAQ
What does a SEA OX BOATS HIN look like?
It starts with the three characters "YSO" — the Manufacturer Identification Code the US Coast Guard assigned to SEA OX BOATS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. SEA OX BOATS hulls (1999–2002) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is SEA OX BOATS still in business?
USCG records list SEA OX BOATS as out of business since 2002. 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 SEA OX BOATS HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. SEA OX BOATS hulls (1999–2002) 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 AR
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "SEA OX BOATS HIN Decoder," carwhere.com/hin-decoder/yso, last verified 2026-06-12.