ATLANTIS CUSTOM BT MFG HIN Decoder
Hull Identification Numbers beginning with TLS were assigned by the US Coast Guard to ATLANTIS CUSTOM BT MFG of COMPTON, CA. The company is recorded as out of business since 1987 — 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
TLS
Location
COMPTON, CA
In business
since 1978
Status
Out of business (1987)
ATLANTIS CUSTOM BT MFG built hulls across both HIN eras (1978–1987): 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+).
ATLANTIS CUSTOM BT MFG HIN FAQ
What does a ATLANTIS CUSTOM BT MFG HIN look like?
It starts with the three characters "TLS" — the Manufacturer Identification Code the US Coast Guard assigned to ATLANTIS CUSTOM BT MFG — followed by a 5-character hull serial and a 4-character date code, 12 characters total. ATLANTIS CUSTOM BT MFG built hulls across both HIN eras (1978–1987): 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 ATLANTIS CUSTOM BT MFG still in business?
USCG records list ATLANTIS CUSTOM BT MFG as out of business since 1987. 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 ATLANTIS CUSTOM BT MFG HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. ATLANTIS CUSTOM BT MFG built hulls across both HIN eras (1978–1987): 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, "ATLANTIS CUSTOM BT MFG HIN Decoder," carwhere.com/hin-decoder/tls, last verified 2026-06-12.