BOULDER BOAT WORKS INC HIN Decoder — MIC TZQ
Hull Identification Numbers beginning with TZQ were assigned by the US Coast Guard to BOULDER BOAT WORKS INC of LONGMONT, CO. 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
TZQ
Location
LONGMONT, CO
In business
since 2002
Status
Listed active in USCG records
BOULDER BOAT WORKS INC hulls (2002–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 BOULDER BOAT WORKS INC HIN breaks down
A current-format (1984–present) Hull Identification Number is 12 characters. Using the example TZQ45678D424 (illustrative):
| Characters | Segment | In example | What it identifies |
|---|---|---|---|
| 1–3 | Manufacturer (MIC) | TZQ | Identifies BOULDER BOAT WORKS INC, assigned by the US Coast Guard. |
| 4–8 | Hull serial number | 45678 | BOULDER BOAT WORKS INC'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 BOULDER BOAT WORKS INC? 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
BOULDER BOAT WORKS INC HIN FAQ
What does a BOULDER BOAT WORKS INC HIN look like?
It starts with the three characters "TZQ" — the Manufacturer Identification Code the US Coast Guard assigned to BOULDER BOAT WORKS INC — followed by a 5-character hull serial and a 4-character date code, 12 characters total. BOULDER BOAT WORKS INC hulls (2002–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is BOULDER BOAT WORKS INC still in business?
USCG records list BOULDER BOAT WORKS INC of LONGMONT, CO in the MIC database (registered 2002).
How do I decode the year on a BOULDER BOAT WORKS INC HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. BOULDER BOAT WORKS INC hulls (2002–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 BOULDER BOAT WORKS INC 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 "TZQ" MIC the same as a BOULDER BOAT WORKS INC serial number?
No. "TZQ" is the Manufacturer Identification Code — characters 1–3 of the HIN — that identifies BOULDER BOAT WORKS INC. The hull serial number is characters 4–8: BOULDER BOAT WORKS INC'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 BOULDER BOAT WORKS INC 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 BOULDER BOAT WORKS INC records, the title, or a marine survey to confirm the exact model and configuration.
Other builders in CO
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, "BOULDER BOAT WORKS INC HIN Decoder," carwhere.com/hin-decoder/tzq, last verified 2026-06-15.