OLDPORT MARINE SERVICE HIN Decoder
Hull Identification Numbers beginning with OMX were assigned by the US Coast Guard to OLDPORT MARINE SERVICE of NEWPORT, RI. The company is recorded as out of business since 2013 — 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
OMX
Location
NEWPORT, RI
In business
since 1986
Status
Out of business (2013)
OLDPORT MARINE SERVICE hulls (1986–2013) 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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OLDPORT MARINE SERVICE HIN FAQ
What does a OLDPORT MARINE SERVICE HIN look like?
It starts with the three characters "OMX" — the Manufacturer Identification Code the US Coast Guard assigned to OLDPORT MARINE SERVICE — followed by a 5-character hull serial and a 4-character date code, 12 characters total. OLDPORT MARINE SERVICE hulls (1986–2013) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is OLDPORT MARINE SERVICE still in business?
USCG records list OLDPORT MARINE SERVICE as out of business since 2013. 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 OLDPORT MARINE SERVICE HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. OLDPORT MARINE SERVICE hulls (1986–2013) 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 RI
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "OLDPORT MARINE SERVICE HIN Decoder," carwhere.com/hin-decoder/omx, last verified 2026-06-12.