C5 CUSTOMS HIN Decoder
Hull Identification Numbers beginning with UKC were assigned by the US Coast Guard to C5 CUSTOMS of MARIANNA, FL. 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
UKC
Location
MARIANNA, FL
In business
since 2003
Status
Listed active in USCG records
C5 CUSTOMS hulls (2003–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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C5 CUSTOMS HIN FAQ
What does a C5 CUSTOMS HIN look like?
It starts with the three characters "UKC" — the Manufacturer Identification Code the US Coast Guard assigned to C5 CUSTOMS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. C5 CUSTOMS hulls (2003–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is C5 CUSTOMS still in business?
USCG records list C5 CUSTOMS of MARIANNA, FL in the MIC database (registered 2003).
How do I decode the year on a C5 CUSTOMS HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. C5 CUSTOMS hulls (2003–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 FL
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "C5 CUSTOMS HIN Decoder," carwhere.com/hin-decoder/ukc, last verified 2026-06-12.