CONCEPT HOLDING CORP HIN Decoder
Hull Identification Numbers beginning with KOH were assigned by the US Coast Guard to CONCEPT HOLDING CORP of HIALEAH GARDEN, FL. The company is recorded as out of business since 1988 — 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
KOH
Location
HIALEAH GARDEN, FL
In business
since 1986
Status
Out of business (1988)
CONCEPT HOLDING CORP hulls (1986–1988) 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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CONCEPT HOLDING CORP HIN FAQ
What does a CONCEPT HOLDING CORP HIN look like?
It starts with the three characters "KOH" — the Manufacturer Identification Code the US Coast Guard assigned to CONCEPT HOLDING CORP — followed by a 5-character hull serial and a 4-character date code, 12 characters total. CONCEPT HOLDING CORP hulls (1986–1988) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is CONCEPT HOLDING CORP still in business?
USCG records list CONCEPT HOLDING CORP as out of business since 1988. 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 CONCEPT HOLDING CORP HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. CONCEPT HOLDING CORP hulls (1986–1988) 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, "CONCEPT HOLDING CORP HIN Decoder," carwhere.com/hin-decoder/koh, last verified 2026-06-12.