TRILLIUM INDUSTRIES HIN Decoder
Hull Identification Numbers beginning with ZTL were assigned by the US Coast Guard to TRILLIUM INDUSTRIES of MARKHAM, ON. The company is recorded as out of business since 1992 — 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
ZTL
Location
MARKHAM, ON
In business
since 1979
Status
Out of business (1992)
TRILLIUM INDUSTRIES built hulls across both HIN eras (1979–1992): 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+).
TRILLIUM INDUSTRIES HIN FAQ
What does a TRILLIUM INDUSTRIES HIN look like?
It starts with the three characters "ZTL" — the Manufacturer Identification Code the US Coast Guard assigned to TRILLIUM INDUSTRIES — followed by a 5-character hull serial and a 4-character date code, 12 characters total. TRILLIUM INDUSTRIES built hulls across both HIN eras (1979–1992): 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 TRILLIUM INDUSTRIES still in business?
USCG records list TRILLIUM INDUSTRIES as out of business since 1992. 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 TRILLIUM INDUSTRIES HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. TRILLIUM INDUSTRIES built hulls across both HIN eras (1979–1992): 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 ON
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "TRILLIUM INDUSTRIES HIN Decoder," carwhere.com/hin-decoder/ztl, last verified 2026-06-12.