AAD WELDING INC HIN Decoder — MIC ADH
Hull Identification Numbers beginning with ADH were assigned by the US Coast Guard to AAD WELDING INC of Bartonville, IL. 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
ADH
Location
Bartonville, IL
In business
since 2001
Status
Listed active in USCG records
AAD WELDING INC hulls (2001–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 AAD WELDING INC HIN breaks down
A current-format (1984–present) Hull Identification Number is 12 characters. Using the example ADH45678D424 (illustrative):
| Characters | Segment | In example | What it identifies |
|---|---|---|---|
| 1–3 | Manufacturer (MIC) | ADH | Identifies AAD WELDING INC, assigned by the US Coast Guard. |
| 4–8 | Hull serial number | 45678 | AAD WELDING INC'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 AAD WELDING INC? 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
AAD WELDING INC HIN FAQ
What does a AAD WELDING INC HIN look like?
It starts with the three characters "ADH" — the Manufacturer Identification Code the US Coast Guard assigned to AAD WELDING INC — followed by a 5-character hull serial and a 4-character date code, 12 characters total. AAD WELDING INC hulls (2001–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is AAD WELDING INC still in business?
USCG records list AAD WELDING INC of Bartonville, IL in the MIC database (registered 2001).
How do I decode the year on a AAD WELDING INC HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. AAD WELDING INC hulls (2001–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 AAD WELDING INC 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 "ADH" MIC the same as a AAD WELDING INC serial number?
No. "ADH" is the Manufacturer Identification Code — characters 1–3 of the HIN — that identifies AAD WELDING INC. The hull serial number is characters 4–8: AAD WELDING INC'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 AAD WELDING INC 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 AAD WELDING INC records, the title, or a marine survey to confirm the exact model and configuration.
Other builders in IL
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, "AAD WELDING INC HIN Decoder," carwhere.com/hin-decoder/adh, last verified 2026-06-15.