SPECIALTY WELDING SERVICE INC HIN Decoder
Hull Identification Numbers beginning with OYJ were assigned by the US Coast Guard to SPECIALTY WELDING SERVICE INC of ST. MARTINVILLE, LA. 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
OYJ
Location
ST. MARTINVILLE, LA
In business
since 2006
Status
Listed active in USCG records
SPECIALTY WELDING SERVICE INC hulls (2006–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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SPECIALTY WELDING SERVICE INC HIN FAQ
What does a SPECIALTY WELDING SERVICE INC HIN look like?
It starts with the three characters "OYJ" — the Manufacturer Identification Code the US Coast Guard assigned to SPECIALTY WELDING SERVICE INC — followed by a 5-character hull serial and a 4-character date code, 12 characters total. SPECIALTY WELDING SERVICE INC hulls (2006–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is SPECIALTY WELDING SERVICE INC still in business?
USCG records list SPECIALTY WELDING SERVICE INC of ST. MARTINVILLE, LA in the MIC database (registered 2006).
How do I decode the year on a SPECIALTY WELDING SERVICE INC HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. SPECIALTY WELDING SERVICE INC hulls (2006–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 LA
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "SPECIALTY WELDING SERVICE INC HIN Decoder," carwhere.com/hin-decoder/oyj, last verified 2026-06-12.