RIDDLE BOAT WORKS HIN Decoder — MIC RID
Hull Identification Numbers beginning with RID were assigned by the US Coast Guard to RIDDLE BOAT WORKS of KAILUA-KONA, HI. 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
RID
Location
KAILUA-KONA, HI
In business
since 2012
Status
Listed active in USCG records
RIDDLE BOAT WORKS hulls (2012–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 RIDDLE BOAT WORKS HIN breaks down
A current-format (1984–present) Hull Identification Number is 12 characters. Using the example RID45678D424 (illustrative):
| Characters | Segment | In example | What it identifies |
|---|---|---|---|
| 1–3 | Manufacturer (MIC) | RID | Identifies RIDDLE BOAT WORKS, assigned by the US Coast Guard. |
| 4–8 | Hull serial number | 45678 | RIDDLE BOAT WORKS'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 RIDDLE BOAT WORKS? 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
RIDDLE BOAT WORKS HIN FAQ
What does a RIDDLE BOAT WORKS HIN look like?
It starts with the three characters "RID" — the Manufacturer Identification Code the US Coast Guard assigned to RIDDLE BOAT WORKS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. RIDDLE BOAT WORKS hulls (2012–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is RIDDLE BOAT WORKS still in business?
USCG records list RIDDLE BOAT WORKS of KAILUA-KONA, HI in the MIC database (registered 2012).
How do I decode the year on a RIDDLE BOAT WORKS HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. RIDDLE BOAT WORKS hulls (2012–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 RIDDLE BOAT WORKS 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 "RID" MIC the same as a RIDDLE BOAT WORKS serial number?
No. "RID" is the Manufacturer Identification Code — characters 1–3 of the HIN — that identifies RIDDLE BOAT WORKS. The hull serial number is characters 4–8: RIDDLE BOAT WORKS'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 RIDDLE BOAT WORKS 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 RIDDLE BOAT WORKS records, the title, or a marine survey to confirm the exact model and configuration.
Other builders in HI
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, "RIDDLE BOAT WORKS HIN Decoder," carwhere.com/hin-decoder/rid, last verified 2026-06-15.