SILLINGER AMERICA HIN Decoder
Hull Identification Numbers beginning with TSW were assigned by the US Coast Guard to SILLINGER AMERICA of IRVINE, CA. The company is recorded as out of business since 1995 — 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
TSW
Location
IRVINE, CA
In business
since 1984
Status
Out of business (1995)
SILLINGER AMERICA built hulls across both HIN eras (1984–1995): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three.
Free · no account · the HIN is on the transom, upper starboard (right) corner
The optional $19.99 Boat History Report adds stolen-boat, salvage/auction, incident, and USCG documentation checks — one-time, no subscription (typical boat-history services charge $25+).
SILLINGER AMERICA HIN FAQ
What does a SILLINGER AMERICA HIN look like?
It starts with the three characters "TSW" — the Manufacturer Identification Code the US Coast Guard assigned to SILLINGER AMERICA — followed by a 5-character hull serial and a 4-character date code, 12 characters total. SILLINGER AMERICA built hulls across both HIN eras (1984–1995): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three.
Is SILLINGER AMERICA still in business?
USCG records list SILLINGER AMERICA as out of business since 1995. 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 SILLINGER AMERICA HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. SILLINGER AMERICA built hulls across both HIN eras (1984–1995): boats before August 1984 carry legacy straight-year or model-year date codes; later hulls use the current month-letter format. The decoder handles all three. Enter the full 12-character HIN above and the decoder works it out, including the legacy formats.
Other builders in CA
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "SILLINGER AMERICA HIN Decoder," carwhere.com/hin-decoder/tsw, last verified 2026-06-12.