SEAHORSE PLASTIC CORP HIN Decoder
Hull Identification Numbers beginning with SET were assigned by the US Coast Guard to SEAHORSE PLASTIC CORP of SUFFOLK, VA. 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
SET
Location
SUFFOLK, VA
In business
since 1973
Status
Listed active in USCG records
SEAHORSE PLASTIC CORP built hulls across both HIN eras (1973–present): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three.
Free · no account · the HIN is on the transom, upper starboard (right) corner
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SEAHORSE PLASTIC CORP HIN FAQ
What does a SEAHORSE PLASTIC CORP HIN look like?
It starts with the three characters "SET" — the Manufacturer Identification Code the US Coast Guard assigned to SEAHORSE PLASTIC CORP — followed by a 5-character hull serial and a 4-character date code, 12 characters total. SEAHORSE PLASTIC CORP built hulls across both HIN eras (1973–present): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three.
Is SEAHORSE PLASTIC CORP still in business?
USCG records list SEAHORSE PLASTIC CORP of SUFFOLK, VA in the MIC database (registered 1973).
How do I decode the year on a SEAHORSE PLASTIC CORP HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. SEAHORSE PLASTIC CORP built hulls across both HIN eras (1973–present): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three. Enter the full 12-character HIN above and the decoder works it out, including the legacy formats.
Other builders in VA
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "SEAHORSE PLASTIC CORP HIN Decoder," carwhere.com/hin-decoder/set, last verified 2026-06-12.