DAN MAR DOCK HIN Decoder
Hull Identification Numbers beginning with UDM were assigned by the US Coast Guard to DAN MAR DOCK of KING, WI. 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
UDM
Location
KING, WI
In business
since 2003
Status
Out of business (2013)
DAN MAR DOCK hulls (2003–2013) 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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DAN MAR DOCK HIN FAQ
What does a DAN MAR DOCK HIN look like?
It starts with the three characters "UDM" — the Manufacturer Identification Code the US Coast Guard assigned to DAN MAR DOCK — followed by a 5-character hull serial and a 4-character date code, 12 characters total. DAN MAR DOCK hulls (2003–2013) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is DAN MAR DOCK still in business?
USCG records list DAN MAR DOCK 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 DAN MAR DOCK HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. DAN MAR DOCK hulls (2003–2013) 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 WI
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "DAN MAR DOCK HIN Decoder," carwhere.com/hin-decoder/udm, last verified 2026-06-12.