SEA SPORT HIN Decoder — MIC WMA
Hull Identification Numbers beginning with WMA were assigned by the US Coast Guard to SEA SPORT of BELLINGHAM, WA. The company is recorded as out of business since 2001 — 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
WMA
Location
BELLINGHAM, WA
In business
since 1972
Status
Out of business (2001)
Parent company
WRIGHT BROS INC
SEA SPORT built hulls across both HIN eras (1972–2001): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three.
How a SEA SPORT HIN breaks down
A current-format (1984–present) Hull Identification Number is 12 characters. Using the example WMA45678D424 (illustrative):
| Characters | Segment | In example | What it identifies |
|---|---|---|---|
| 1–3 | Manufacturer (MIC) | WMA | Identifies SEA SPORT, assigned by the US Coast Guard. |
| 4–8 | Hull serial number | 45678 | SEA SPORT'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 SEA SPORT? Check it before you pay.
SEA SPORT is recorded out of business (2001) — 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
SEA SPORT HIN FAQ
What does a SEA SPORT HIN look like?
It starts with the three characters "WMA" — the Manufacturer Identification Code the US Coast Guard assigned to SEA SPORT — followed by a 5-character hull serial and a 4-character date code, 12 characters total. SEA SPORT built hulls across both HIN eras (1972–2001): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three.
Is SEA SPORT still in business?
USCG records list SEA SPORT as out of business since 2001 (associated with WRIGHT BROS INC). 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 SEA SPORT HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. SEA SPORT built hulls across both HIN eras (1972–2001): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three. Enter the full 12-character HIN above and the decoder works it out, including the legacy formats.
Where is the HIN on a SEA SPORT 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 "WMA" MIC the same as a SEA SPORT serial number?
No. "WMA" is the Manufacturer Identification Code — characters 1–3 of the HIN — that identifies SEA SPORT. The hull serial number is characters 4–8: SEA SPORT'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 SEA SPORT 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 SEA SPORT 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, "SEA SPORT HIN Decoder," carwhere.com/hin-decoder/wma, last verified 2026-06-15.