ASTRON SPECIALTY METALS LTD HIN Decoder
Hull Identification Numbers beginning with ZWJ were assigned by the US Coast Guard to ASTRON SPECIALTY METALS LTD of WATERLOO, ON. 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
ZWJ
Location
WATERLOO, ON
In business
since 1984
Status
Listed active in USCG records
ASTRON SPECIALTY METALS LTD built hulls across both HIN eras (1984–present): 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+).
ASTRON SPECIALTY METALS LTD HIN FAQ
What does a ASTRON SPECIALTY METALS LTD HIN look like?
It starts with the three characters "ZWJ" — the Manufacturer Identification Code the US Coast Guard assigned to ASTRON SPECIALTY METALS LTD — followed by a 5-character hull serial and a 4-character date code, 12 characters total. ASTRON SPECIALTY METALS LTD built hulls across both HIN eras (1984–present): 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 ASTRON SPECIALTY METALS LTD still in business?
USCG records list ASTRON SPECIALTY METALS LTD of WATERLOO, ON in the MIC database (registered 1984).
How do I decode the year on a ASTRON SPECIALTY METALS LTD HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. ASTRON SPECIALTY METALS LTD built hulls across both HIN eras (1984–present): 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, "ASTRON SPECIALTY METALS LTD HIN Decoder," carwhere.com/hin-decoder/zwj, last verified 2026-06-12.