GRP PRODUCTIONS HIN Decoder
Hull Identification Numbers beginning with ZGP were assigned by the US Coast Guard to GRP PRODUCTIONS of ST. CATHERINES, 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
ZGP
Location
ST. CATHERINES, ON
In business
since 1981
Status
Listed active in USCG records
GRP PRODUCTIONS built hulls across both HIN eras (1981–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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GRP PRODUCTIONS HIN FAQ
What does a GRP PRODUCTIONS HIN look like?
It starts with the three characters "ZGP" — the Manufacturer Identification Code the US Coast Guard assigned to GRP PRODUCTIONS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. GRP PRODUCTIONS built hulls across both HIN eras (1981–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 GRP PRODUCTIONS still in business?
USCG records list GRP PRODUCTIONS of ST. CATHERINES, ON in the MIC database (registered 1981).
How do I decode the year on a GRP PRODUCTIONS HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. GRP PRODUCTIONS built hulls across both HIN eras (1981–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, "GRP PRODUCTIONS HIN Decoder," carwhere.com/hin-decoder/zgp, last verified 2026-06-12.