ULTRALIGHT BOATWORKS LLC HIN Decoder — MIC ULW
Hull Identification Numbers beginning with ULW were assigned by the US Coast Guard to ULTRALIGHT BOATWORKS LLC of BAYOU VISTA, TX. 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
ULW
Location
BAYOU VISTA, TX
In business
since 2004
Status
Listed active in USCG records
ULTRALIGHT BOATWORKS LLC hulls (2004–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
How a ULTRALIGHT BOATWORKS LLC HIN breaks down
A current-format (1984–present) Hull Identification Number is 12 characters. Using the example ULW45678D424 (illustrative):
| Characters | Segment | In example | What it identifies |
|---|---|---|---|
| 1–3 | Manufacturer (MIC) | ULW | Identifies ULTRALIGHT BOATWORKS LLC, assigned by the US Coast Guard. |
| 4–8 | Hull serial number | 45678 | ULTRALIGHT BOATWORKS LLC's own production number for the specific hull (the letters I, O, Q are never used). |
| 9 | Certification month | D | Month built — A=January … L=December (D = April). |
| 10 | Certification year | 4 | Last digit of the certification year. |
| 11–12 | Model year | 24 | The boat’s model year. |
Free · no account · the HIN is on the transom, upper starboard (right) corner
Buying this ULTRALIGHT BOATWORKS LLC? Check it before you pay.
Decoding the HIN confirms the year and serial, but not the safety record. The $9.99 Boat Report adds the full CPSC marine-recall check, a HIN consistency check, a verify-before-you-buy checklist, and the USCG builder record for this hull — one downloadable report, one-time, no subscription. See what's included
ULTRALIGHT BOATWORKS LLC HIN FAQ
What does a ULTRALIGHT BOATWORKS LLC HIN look like?
It starts with the three characters "ULW" — the Manufacturer Identification Code the US Coast Guard assigned to ULTRALIGHT BOATWORKS LLC — followed by a 5-character hull serial and a 4-character date code, 12 characters total. ULTRALIGHT BOATWORKS LLC hulls (2004–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is ULTRALIGHT BOATWORKS LLC still in business?
USCG records list ULTRALIGHT BOATWORKS LLC of BAYOU VISTA, TX in the MIC database (registered 2004).
How do I decode the year on a ULTRALIGHT BOATWORKS LLC HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. ULTRALIGHT BOATWORKS LLC hulls (2004–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.
Where is the HIN on a ULTRALIGHT BOATWORKS LLC boat?
On the outside upper-starboard (right) corner of the transom, within two inches of the top — required by 33 CFR 181.29. Since August 1984 an identical duplicate HIN is also molded into an unexposed interior location as an anti-theft measure. Both should match the title, registration, and insurance card exactly.
Is the "ULW" MIC the same as a ULTRALIGHT BOATWORKS LLC serial number?
No. "ULW" is the Manufacturer Identification Code — characters 1–3 of the HIN — that identifies ULTRALIGHT BOATWORKS LLC. The hull serial number is characters 4–8: ULTRALIGHT BOATWORKS LLC's own production number for that specific boat (the letters I, O, and Q are never used). The full 12-character HIN combines the MIC, the serial, and the date code.
Can a ULTRALIGHT BOATWORKS LLC HIN tell me the exact model?
Not on its own. A HIN encodes the builder, hull serial, certification month/year, and model year — not the model name or length. Match the decoded year and serial against ULTRALIGHT BOATWORKS LLC records, the title, or a marine survey to confirm the exact model and configuration.
Other builders in TX
Sources: verified against the USCG Manufacturer Identification Code database (refreshed monthly) · HIN format per 33 CFR Part 181, Subpart C. Reviewed by Sam Reynolds, Lead Researcher, CarWhere. Cite this page: CarWhere, "ULTRALIGHT BOATWORKS LLC HIN Decoder," carwhere.com/hin-decoder/ulw, last verified 2026-06-15.