ROCK BOTTOM CUSTOM WELDING HIN Decoder
Hull Identification Numbers beginning with IGL were assigned by the US Coast Guard to ROCK BOTTOM CUSTOM WELDING of LEBANNON, MO. The company is recorded as out of business since 2008 — 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
IGL
Location
LEBANNON, MO
In business
since 2007
Status
Out of business (2008)
ROCK BOTTOM CUSTOM WELDING hulls (2007–2008) 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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ROCK BOTTOM CUSTOM WELDING HIN FAQ
What does a ROCK BOTTOM CUSTOM WELDING HIN look like?
It starts with the three characters "IGL" — the Manufacturer Identification Code the US Coast Guard assigned to ROCK BOTTOM CUSTOM WELDING — followed by a 5-character hull serial and a 4-character date code, 12 characters total. ROCK BOTTOM CUSTOM WELDING hulls (2007–2008) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is ROCK BOTTOM CUSTOM WELDING still in business?
USCG records list ROCK BOTTOM CUSTOM WELDING as out of business since 2008. 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 ROCK BOTTOM CUSTOM WELDING HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. ROCK BOTTOM CUSTOM WELDING hulls (2007–2008) 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, "ROCK BOTTOM CUSTOM WELDING HIN Decoder," carwhere.com/hin-decoder/igl, last verified 2026-06-12.