MARINE SYSTEMS CUSTM BOATBLDG HIN Decoder
Hull Identification Numbers beginning with MSD were assigned by the US Coast Guard to MARINE SYSTEMS CUSTM BOATBLDG of SOUTHWEST HARBOR, 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
MSD
Location
SOUTHWEST HARBOR, ME
In business
since 1993
Status
Listed active in USCG records
MARINE SYSTEMS CUSTM BOATBLDG hulls (1993–present) 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 SYSTEMS CUSTM BOATBLDG HIN FAQ
What does a MARINE SYSTEMS CUSTM BOATBLDG HIN look like?
It starts with the three characters "MSD" — the Manufacturer Identification Code the US Coast Guard assigned to MARINE SYSTEMS CUSTM BOATBLDG — followed by a 5-character hull serial and a 4-character date code, 12 characters total. MARINE SYSTEMS CUSTM BOATBLDG hulls (1993–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is MARINE SYSTEMS CUSTM BOATBLDG still in business?
USCG records list MARINE SYSTEMS CUSTM BOATBLDG of SOUTHWEST HARBOR, ME in the MIC database (registered 1993).
How do I decode the year on a MARINE SYSTEMS CUSTM BOATBLDG HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. MARINE SYSTEMS CUSTM BOATBLDG hulls (1993–present) 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 ME
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "MARINE SYSTEMS CUSTM BOATBLDG HIN Decoder," carwhere.com/hin-decoder/msd, last verified 2026-06-12.