MARTIN & MERRELL HIN Decoder
Hull Identification Numbers beginning with MM4 were assigned by the US Coast Guard to MARTIN & MERRELL of FT LAUDERDALE, FL. The company is recorded as out of business since 1987 — common for older hulls, and useful to know when hunting parts or records. Enter the full 12-character HIN below for build date, model year, and serial — free, no account.
MIC
MM4
Location
FT LAUDERDALE, FL
In business
since 1982
Status
Out of business (1987)
MARTIN & MERRELL built hulls across both HIN eras (1982–1987): 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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MARTIN & MERRELL HIN FAQ
What does a MARTIN & MERRELL HIN look like?
It starts with the three characters "MM4" — the Manufacturer Identification Code the US Coast Guard assigned to MARTIN & MERRELL — followed by a 5-character hull serial and a 4-character date code, 12 characters total. MARTIN & MERRELL built hulls across both HIN eras (1982–1987): 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 MARTIN & MERRELL still in business?
USCG records list MARTIN & MERRELL as out of business since 1987. That's common for older hulls — the HIN still decodes normally, and the out-of-business date helps date the boat and guides parts-hunting toward salvage and owner groups rather than a dealer network.
How do I decode the year on a MARTIN & MERRELL HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. MARTIN & MERRELL built hulls across both HIN eras (1982–1987): 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, "MARTIN & MERRELL HIN Decoder," carwhere.com/hin-decoder/mm4, last verified 2026-06-12.