JOHNSONS CUST FIBERGLS HIN Decoder — MIC JOC
Hull Identification Numbers beginning with JOC were assigned by the US Coast Guard to JOHNSONS CUST FIBERGLS of OCALA, FL. The company is recorded as out of business since 1991 — 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
JOC
Location
OCALA, FL
In business
since 1988
Status
Out of business (1991)
Parent company
FORM ART, INC
JOHNSONS CUST FIBERGLS hulls (1988–1991) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
How a JOHNSONS CUST FIBERGLS HIN breaks down
A current-format (1984–present) Hull Identification Number is 12 characters. Using the example JOC45678D424 (illustrative):
| Characters | Segment | In example | What it identifies |
|---|---|---|---|
| 1–3 | Manufacturer (MIC) | JOC | Identifies JOHNSONS CUST FIBERGLS, assigned by the US Coast Guard. |
| 4–8 | Hull serial number | 45678 | JOHNSONS CUST FIBERGLS'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 JOHNSONS CUST FIBERGLS? Check it before you pay.
JOHNSONS CUST FIBERGLS is recorded out of business (1991) — 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
JOHNSONS CUST FIBERGLS HIN FAQ
What does a JOHNSONS CUST FIBERGLS HIN look like?
It starts with the three characters "JOC" — the Manufacturer Identification Code the US Coast Guard assigned to JOHNSONS CUST FIBERGLS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. JOHNSONS CUST FIBERGLS hulls (1988–1991) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is JOHNSONS CUST FIBERGLS still in business?
USCG records list JOHNSONS CUST FIBERGLS as out of business since 1991 (associated with FORM ART, 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 JOHNSONS CUST FIBERGLS HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. JOHNSONS CUST FIBERGLS hulls (1988–1991) 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 JOHNSONS CUST FIBERGLS 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 "JOC" MIC the same as a JOHNSONS CUST FIBERGLS serial number?
No. "JOC" is the Manufacturer Identification Code — characters 1–3 of the HIN — that identifies JOHNSONS CUST FIBERGLS. The hull serial number is characters 4–8: JOHNSONS CUST FIBERGLS'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 JOHNSONS CUST FIBERGLS 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 JOHNSONS CUST FIBERGLS 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, "JOHNSONS CUST FIBERGLS HIN Decoder," carwhere.com/hin-decoder/joc, last verified 2026-06-15.