MARINE MAINTENANCE SERVICE HIN Decoder
Hull Identification Numbers beginning with MNF were assigned by the US Coast Guard to MARINE MAINTENANCE SERVICE of N. FT. MYERS, FL. The company is recorded as out of business since 2005 — 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
MNF
Location
N. FT. MYERS, FL
In business
since 1995
Status
Out of business (2005)
MARINE MAINTENANCE SERVICE hulls (1995–2005) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Free · no account · the HIN is on the transom, upper starboard (right) corner
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MARINE MAINTENANCE SERVICE HIN FAQ
What does a MARINE MAINTENANCE SERVICE HIN look like?
It starts with the three characters "MNF" — the Manufacturer Identification Code the US Coast Guard assigned to MARINE MAINTENANCE SERVICE — followed by a 5-character hull serial and a 4-character date code, 12 characters total. MARINE MAINTENANCE SERVICE hulls (1995–2005) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is MARINE MAINTENANCE SERVICE still in business?
USCG records list MARINE MAINTENANCE SERVICE as out of business since 2005. 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 MARINE MAINTENANCE SERVICE HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. MARINE MAINTENANCE SERVICE hulls (1995–2005) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits. 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, "MARINE MAINTENANCE SERVICE HIN Decoder," carwhere.com/hin-decoder/mnf, last verified 2026-06-12.