SEA ISLAND BOAT BUILDERS HIN Decoder — MIC IBL
Hull Identification Numbers beginning with IBL were assigned by the US Coast Guard to SEA ISLAND BOAT BUILDERS of ISLE OF PALMS, SC. 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
IBL
Location
ISLE OF PALMS, SC
In business
since 1998
Status
Listed active in USCG records
SEA ISLAND BOAT BUILDERS hulls (1998–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 SEA ISLAND BOAT BUILDERS HIN breaks down
A current-format (1984–present) Hull Identification Number is 12 characters. Using the example IBL45678D424 (illustrative):
| Characters | Segment | In example | What it identifies |
|---|---|---|---|
| 1–3 | Manufacturer (MIC) | IBL | Identifies SEA ISLAND BOAT BUILDERS, assigned by the US Coast Guard. |
| 4–8 | Hull serial number | 45678 | SEA ISLAND BOAT BUILDERS'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 SEA ISLAND BOAT BUILDERS? 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
SEA ISLAND BOAT BUILDERS HIN FAQ
What does a SEA ISLAND BOAT BUILDERS HIN look like?
It starts with the three characters "IBL" — the Manufacturer Identification Code the US Coast Guard assigned to SEA ISLAND BOAT BUILDERS — followed by a 5-character hull serial and a 4-character date code, 12 characters total. SEA ISLAND BOAT BUILDERS hulls (1998–present) all use the current HIN format: a month letter (A=January…L=December), a certification-year digit, then two model-year digits.
Is SEA ISLAND BOAT BUILDERS still in business?
USCG records list SEA ISLAND BOAT BUILDERS of ISLE OF PALMS, SC in the MIC database (registered 1998).
How do I decode the year on a SEA ISLAND BOAT BUILDERS HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. SEA ISLAND BOAT BUILDERS hulls (1998–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 SEA ISLAND BOAT BUILDERS 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 "IBL" MIC the same as a SEA ISLAND BOAT BUILDERS serial number?
No. "IBL" is the Manufacturer Identification Code — characters 1–3 of the HIN — that identifies SEA ISLAND BOAT BUILDERS. The hull serial number is characters 4–8: SEA ISLAND BOAT BUILDERS'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 SEA ISLAND BOAT BUILDERS 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 SEA ISLAND BOAT BUILDERS records, the title, or a marine survey to confirm the exact model and configuration.
Other builders in SC
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, "SEA ISLAND BOAT BUILDERS HIN Decoder," carwhere.com/hin-decoder/ibl, last verified 2026-06-15.