OLYMPIC BOAT CO INC HIN Decoder
Hull Identification Numbers beginning with GDN were assigned by the US Coast Guard to OLYMPIC BOAT CO INC of MONROE, WA. The company is recorded as out of business since 1990 — 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
GDN
Location
MONROE, WA
In business
since 1971
Status
Out of business (1990)
OLYMPIC BOAT CO INC built hulls across both HIN eras (1971–1990): 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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OLYMPIC BOAT CO INC HIN FAQ
What does a OLYMPIC BOAT CO INC HIN look like?
It starts with the three characters "GDN" — the Manufacturer Identification Code the US Coast Guard assigned to OLYMPIC BOAT CO INC — followed by a 5-character hull serial and a 4-character date code, 12 characters total. OLYMPIC BOAT CO INC built hulls across both HIN eras (1971–1990): 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 OLYMPIC BOAT CO INC still in business?
USCG records list OLYMPIC BOAT CO INC as out of business since 1990. 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 OLYMPIC BOAT CO INC HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. OLYMPIC BOAT CO INC built hulls across both HIN eras (1971–1990): 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 WA
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "OLYMPIC BOAT CO INC HIN Decoder," carwhere.com/hin-decoder/gdn, last verified 2026-06-12.