ST JOHNS FABRICATORS INC HIN Decoder — MIC SJF
Hull Identification Numbers beginning with SJF were assigned by the US Coast Guard to ST JOHNS FABRICATORS INC of GREEN COVE SPRINGS, FL. The company is recorded as out of business since 2009 — 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
SJF
Location
GREEN COVE SPRINGS, FL
In business
since 1992
Status
Out of business (2009)
ST JOHNS FABRICATORS INC hulls (1992–2009) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
How a ST JOHNS FABRICATORS INC HIN breaks down
A current-format (1984–present) Hull Identification Number is 12 characters. Using the example SJF45678D424 (illustrative):
| Characters | Segment | In example | What it identifies |
|---|---|---|---|
| 1–3 | Manufacturer (MIC) | SJF | Identifies ST JOHNS FABRICATORS INC, assigned by the US Coast Guard. |
| 4–8 | Hull serial number | 45678 | ST JOHNS FABRICATORS 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 ST JOHNS FABRICATORS INC? Check it before you pay.
ST JOHNS FABRICATORS INC is recorded out of business (2009) — 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
ST JOHNS FABRICATORS INC HIN FAQ
What does a ST JOHNS FABRICATORS INC HIN look like?
It starts with the three characters "SJF" — the Manufacturer Identification Code the US Coast Guard assigned to ST JOHNS FABRICATORS INC — followed by a 5-character hull serial and a 4-character date code, 12 characters total. ST JOHNS FABRICATORS INC hulls (1992–2009) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is ST JOHNS FABRICATORS INC still in business?
USCG records list ST JOHNS FABRICATORS INC as out of business since 2009. 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 ST JOHNS FABRICATORS INC HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. ST JOHNS FABRICATORS INC hulls (1992–2009) 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 ST JOHNS FABRICATORS 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 "SJF" MIC the same as a ST JOHNS FABRICATORS INC serial number?
No. "SJF" is the Manufacturer Identification Code — characters 1–3 of the HIN — that identifies ST JOHNS FABRICATORS INC. The hull serial number is characters 4–8: ST JOHNS FABRICATORS 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 ST JOHNS FABRICATORS 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 ST JOHNS FABRICATORS INC 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, "ST JOHNS FABRICATORS INC HIN Decoder," carwhere.com/hin-decoder/sjf, last verified 2026-06-15.