GREAT MIDWEST YACHT CO. HIN Decoder
Hull Identification Numbers beginning with GRU were assigned by the US Coast Guard to GREAT MIDWEST YACHT CO. of SUNBURY, OH. 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
GRU
Location
SUNBURY, OH
In business
since 1975
Status
Listed active in USCG records
GREAT MIDWEST YACHT CO. built hulls across both HIN eras (1975–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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GREAT MIDWEST YACHT CO. HIN FAQ
What does a GREAT MIDWEST YACHT CO. HIN look like?
It starts with the three characters "GRU" — the Manufacturer Identification Code the US Coast Guard assigned to GREAT MIDWEST YACHT CO. — followed by a 5-character hull serial and a 4-character date code, 12 characters total. GREAT MIDWEST YACHT CO. built hulls across both HIN eras (1975–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 GREAT MIDWEST YACHT CO. still in business?
USCG records list GREAT MIDWEST YACHT CO. of SUNBURY, OH in the MIC database (registered 1975).
How do I decode the year on a GREAT MIDWEST YACHT CO. HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. GREAT MIDWEST YACHT CO. built hulls across both HIN eras (1975–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 OH
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "GREAT MIDWEST YACHT CO. HIN Decoder," carwhere.com/hin-decoder/gru, last verified 2026-06-12.