HILLEMANN BOATBUILDING CO. HIN Decoder
Hull Identification Numbers beginning with HNB were assigned by the US Coast Guard to HILLEMANN BOATBUILDING CO. of JEFFERSON CITY, MO. The company is recorded as out of business since 1995 — 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
HNB
Location
JEFFERSON CITY, MO
In business
since 1992
Status
Out of business (1995)
HILLEMANN BOATBUILDING CO. hulls (1992–1995) 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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HILLEMANN BOATBUILDING CO. HIN FAQ
What does a HILLEMANN BOATBUILDING CO. HIN look like?
It starts with the three characters "HNB" — the Manufacturer Identification Code the US Coast Guard assigned to HILLEMANN BOATBUILDING CO. — followed by a 5-character hull serial and a 4-character date code, 12 characters total. HILLEMANN BOATBUILDING CO. hulls (1992–1995) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is HILLEMANN BOATBUILDING CO. still in business?
USCG records list HILLEMANN BOATBUILDING CO. as out of business since 1995. 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 HILLEMANN BOATBUILDING CO. HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. HILLEMANN BOATBUILDING CO. hulls (1992–1995) 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 MO
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "HILLEMANN BOATBUILDING CO. HIN Decoder," carwhere.com/hin-decoder/hnb, last verified 2026-06-12.