HARLEY BOAT CORPORATION HIN Decoder — MIC HDH
Hull Identification Numbers beginning with HDH were assigned by the US Coast Guard to HARLEY BOAT CORPORATION of BARTOW, FL. 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
HDH
Location
BARTOW, FL
In business
since 1980
Status
Listed active in USCG records
HARLEY BOAT CORPORATION built hulls across both HIN eras (1980–present): 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 HARLEY BOAT CORPORATION HIN breaks down
A current-format (1984–present) Hull Identification Number is 12 characters. Using the example HDH45678D424 (illustrative):
| Characters | Segment | In example | What it identifies |
|---|---|---|---|
| 1–3 | Manufacturer (MIC) | HDH | Identifies HARLEY BOAT CORPORATION, assigned by the US Coast Guard. |
| 4–8 | Hull serial number | 45678 | HARLEY BOAT CORPORATION'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 HARLEY BOAT CORPORATION? 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
HARLEY BOAT CORPORATION HIN FAQ
What does a HARLEY BOAT CORPORATION HIN look like?
It starts with the three characters "HDH" — the Manufacturer Identification Code the US Coast Guard assigned to HARLEY BOAT CORPORATION — followed by a 5-character hull serial and a 4-character date code, 12 characters total. HARLEY BOAT CORPORATION built hulls across both HIN eras (1980–present): 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 HARLEY BOAT CORPORATION still in business?
USCG records list HARLEY BOAT CORPORATION of BARTOW, FL in the MIC database (registered 1980).
How do I decode the year on a HARLEY BOAT CORPORATION HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. HARLEY BOAT CORPORATION built hulls across both HIN eras (1980–present): 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 HARLEY BOAT CORPORATION 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 "HDH" MIC the same as a HARLEY BOAT CORPORATION serial number?
No. "HDH" is the Manufacturer Identification Code — characters 1–3 of the HIN — that identifies HARLEY BOAT CORPORATION. The hull serial number is characters 4–8: HARLEY BOAT CORPORATION'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 HARLEY BOAT CORPORATION 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 HARLEY BOAT CORPORATION records, the title, or a marine survey to confirm the exact model and configuration.
Other builders in FL
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, "HARLEY BOAT CORPORATION HIN Decoder," carwhere.com/hin-decoder/hdh, last verified 2026-06-15.