SMALL BOAT COMPANY HIN Decoder — MIC WRH
Hull Identification Numbers beginning with WRH were assigned by the US Coast Guard to SMALL BOAT COMPANY of SAN FRANCISCO, CA. The company is recorded as out of business since 1981 — 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
WRH
Location
SAN FRANCISCO, CA
In business
since 1979
Status
Out of business (1981)
SMALL BOAT COMPANY hulls (1979–1981) predate the current HIN format — expect the legacy straight-year (MMYY) or model-year (M + year + month letter) date codes used 1972–1984.
How a SMALL BOAT COMPANY HIN breaks down
A current-format (1984–present) Hull Identification Number is 12 characters. Using the example WRH45678D424 (illustrative):
| Characters | Segment | In example | What it identifies |
|---|---|---|---|
| 1–3 | Manufacturer (MIC) | WRH | Identifies SMALL BOAT COMPANY, assigned by the US Coast Guard. |
| 4–8 | Hull serial number | 45678 | SMALL BOAT COMPANY'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 SMALL BOAT COMPANY? Check it before you pay.
SMALL BOAT COMPANY is recorded out of business (1981) — which affects recalls, parts support, and resale. 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
SMALL BOAT COMPANY HIN FAQ
What does a SMALL BOAT COMPANY HIN look like?
It starts with the three characters "WRH" — the Manufacturer Identification Code the US Coast Guard assigned to SMALL BOAT COMPANY — followed by a 5-character hull serial and a 4-character date code, 12 characters total. SMALL BOAT COMPANY hulls (1979–1981) predate the current HIN format — expect the legacy straight-year (MMYY) or model-year (M + year + month letter) date codes used 1972–1984.
Is SMALL BOAT COMPANY still in business?
USCG records list SMALL BOAT COMPANY as out of business since 1981. 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 SMALL BOAT COMPANY HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. SMALL BOAT COMPANY hulls (1979–1981) predate the current HIN format — expect the legacy straight-year (MMYY) or model-year (M + year + month letter) date codes used 1972–1984. Enter the full 12-character HIN above and the decoder works it out, including the legacy formats.
Where is the HIN on a SMALL BOAT COMPANY 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 "WRH" MIC the same as a SMALL BOAT COMPANY serial number?
No. "WRH" is the Manufacturer Identification Code — characters 1–3 of the HIN — that identifies SMALL BOAT COMPANY. The hull serial number is characters 4–8: SMALL BOAT COMPANY'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 SMALL BOAT COMPANY 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 SMALL BOAT COMPANY records, the title, or a marine survey to confirm the exact model and configuration.
Other builders in CA
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, "SMALL BOAT COMPANY HIN Decoder," carwhere.com/hin-decoder/wrh, last verified 2026-06-15.