ROCKPORT MARINE HIN Decoder
Hull Identification Numbers beginning with ROK were assigned by the US Coast Guard to ROCKPORT MARINE of ROCKPORT, ME. 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
ROK
Location
ROCKPORT, ME
In business
since 1984
Status
Listed active in USCG records
ROCKPORT MARINE built hulls across both HIN eras (1984–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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ROCKPORT MARINE HIN FAQ
What does a ROCKPORT MARINE HIN look like?
It starts with the three characters "ROK" — the Manufacturer Identification Code the US Coast Guard assigned to ROCKPORT MARINE — followed by a 5-character hull serial and a 4-character date code, 12 characters total. ROCKPORT MARINE built hulls across both HIN eras (1984–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 ROCKPORT MARINE still in business?
USCG records list ROCKPORT MARINE of ROCKPORT, ME in the MIC database (registered 1984).
How do I decode the year on a ROCKPORT MARINE HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. ROCKPORT MARINE built hulls across both HIN eras (1984–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 ME
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "ROCKPORT MARINE HIN Decoder," carwhere.com/hin-decoder/rok, last verified 2026-06-12.