CHARLES MILL MARINA HIN Decoder — MIC OHS
Hull Identification Numbers beginning with OHS were assigned by the US Coast Guard to CHARLES MILL MARINA of MANSFIELD, OH. 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
OHS
Location
MANSFIELD, OH
In business
since 1999
Status
Listed active in USCG records
CHARLES MILL MARINA hulls (1999–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 CHARLES MILL MARINA HIN breaks down
A current-format (1984–present) Hull Identification Number is 12 characters. Using the example OHS45678D424 (illustrative):
| Characters | Segment | In example | What it identifies |
|---|---|---|---|
| 1–3 | Manufacturer (MIC) | OHS | Identifies CHARLES MILL MARINA, assigned by the US Coast Guard. |
| 4–8 | Hull serial number | 45678 | CHARLES MILL MARINA'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 CHARLES MILL MARINA? 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
CHARLES MILL MARINA HIN FAQ
What does a CHARLES MILL MARINA HIN look like?
It starts with the three characters "OHS" — the Manufacturer Identification Code the US Coast Guard assigned to CHARLES MILL MARINA — followed by a 5-character hull serial and a 4-character date code, 12 characters total. CHARLES MILL MARINA hulls (1999–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is CHARLES MILL MARINA still in business?
USCG records list CHARLES MILL MARINA of MANSFIELD, OH in the MIC database (registered 1999).
How do I decode the year on a CHARLES MILL MARINA HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. CHARLES MILL MARINA hulls (1999–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 CHARLES MILL MARINA 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 "OHS" MIC the same as a CHARLES MILL MARINA serial number?
No. "OHS" is the Manufacturer Identification Code — characters 1–3 of the HIN — that identifies CHARLES MILL MARINA. The hull serial number is characters 4–8: CHARLES MILL MARINA'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 CHARLES MILL MARINA 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 CHARLES MILL MARINA records, the title, or a marine survey to confirm the exact model and configuration.
Other builders in OH
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, "CHARLES MILL MARINA HIN Decoder," carwhere.com/hin-decoder/ohs, last verified 2026-06-15.