MODERN MARINE HIN Decoder
Hull Identification Numbers beginning with MUD were assigned by the US Coast Guard to MODERN MARINE of WARMINSTER, PA. The company is recorded as out of business since 1991 — 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
MUD
Location
WARMINSTER, PA
In business
since 1978
Status
Out of business (1991)
MODERN MARINE built hulls across both HIN eras (1978–1991): 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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MODERN MARINE HIN FAQ
What does a MODERN MARINE HIN look like?
It starts with the three characters "MUD" — the Manufacturer Identification Code the US Coast Guard assigned to MODERN MARINE — followed by a 5-character hull serial and a 4-character date code, 12 characters total. MODERN MARINE built hulls across both HIN eras (1978–1991): 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 MODERN MARINE still in business?
USCG records list MODERN MARINE as out of business since 1991. 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 MODERN MARINE HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. MODERN MARINE built hulls across both HIN eras (1978–1991): 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 PA
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "MODERN MARINE HIN Decoder," carwhere.com/hin-decoder/mud, last verified 2026-06-12.