FLAT OUT HIN Decoder
Hull Identification Numbers beginning with LUL were assigned by the US Coast Guard to FLAT OUT of SAINT AUGUSTINE, FL. The company is recorded as out of business since 2011 — 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
LUL
Location
SAINT AUGUSTINE, FL
In business
since 2007
Status
Out of business (2011)
FLAT OUT hulls (2007–2011) 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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FLAT OUT HIN FAQ
What does a FLAT OUT HIN look like?
It starts with the three characters "LUL" — the Manufacturer Identification Code the US Coast Guard assigned to FLAT OUT — followed by a 5-character hull serial and a 4-character date code, 12 characters total. FLAT OUT hulls (2007–2011) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is FLAT OUT still in business?
USCG records list FLAT OUT as out of business since 2011. 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 FLAT OUT HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. FLAT OUT hulls (2007–2011) 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, "FLAT OUT HIN Decoder," carwhere.com/hin-decoder/lul, last verified 2026-06-12.