HINSHAW YACHTS HIN Decoder — MIC HPK
Hull Identification Numbers beginning with HPK were assigned by the US Coast Guard to HINSHAW YACHTS of SEATTLE, WA. The company is recorded as out of business since 1990 — 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
HPK
Location
SEATTLE, WA
In business
since 1985
Status
Out of business (1990)
HINSHAW YACHTS hulls (1985–1990) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
How a HINSHAW YACHTS HIN breaks down
A current-format (1984–present) Hull Identification Number is 12 characters. Using the example HPK45678D424 (illustrative):
| Characters | Segment | In example | What it identifies |
|---|---|---|---|
| 1–3 | Manufacturer (MIC) | HPK | Identifies HINSHAW YACHTS, assigned by the US Coast Guard. |
| 4–8 | Hull serial number | 45678 | HINSHAW YACHTS'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 HINSHAW YACHTS? Check it before you pay.
HINSHAW YACHTS is recorded out of business (1990) — 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
HINSHAW YACHTS HIN FAQ
What does a HINSHAW YACHTS HIN look like?
It starts with the three characters "HPK" — the Manufacturer Identification Code the US Coast Guard assigned to HINSHAW YACHTS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. HINSHAW YACHTS hulls (1985–1990) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is HINSHAW YACHTS still in business?
USCG records list HINSHAW YACHTS as out of business since 1990. 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 HINSHAW YACHTS HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. HINSHAW YACHTS hulls (1985–1990) 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 HINSHAW YACHTS 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 "HPK" MIC the same as a HINSHAW YACHTS serial number?
No. "HPK" is the Manufacturer Identification Code — characters 1–3 of the HIN — that identifies HINSHAW YACHTS. The hull serial number is characters 4–8: HINSHAW YACHTS'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 HINSHAW YACHTS 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 HINSHAW YACHTS records, the title, or a marine survey to confirm the exact model and configuration.
Other builders in WA
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, "HINSHAW YACHTS HIN Decoder," carwhere.com/hin-decoder/hpk, last verified 2026-06-15.