ACTION MARINE INC HIN Decoder
Hull Identification Numbers beginning with ACM were assigned by the US Coast Guard to ACTION MARINE INC of KEY LARGO, FL. 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
ACM
Location
KEY LARGO, FL
In business
since 1973
Status
Listed active in USCG records
ACTION MARINE INC built hulls across both HIN eras (1973–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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ACTION MARINE INC HIN FAQ
What does a ACTION MARINE INC HIN look like?
It starts with the three characters "ACM" — the Manufacturer Identification Code the US Coast Guard assigned to ACTION MARINE INC — followed by a 5-character hull serial and a 4-character date code, 12 characters total. ACTION MARINE INC built hulls across both HIN eras (1973–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 ACTION MARINE INC still in business?
USCG records list ACTION MARINE INC of KEY LARGO, FL in the MIC database (registered 1973).
How do I decode the year on a ACTION MARINE INC HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. ACTION MARINE INC built hulls across both HIN eras (1973–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 FL
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "ACTION MARINE INC HIN Decoder," carwhere.com/hin-decoder/acm, last verified 2026-06-12.