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