PLASTIC MECHANICAL SP HIN Decoder
Hull Identification Numbers beginning with PQS were assigned by the US Coast Guard to PLASTIC MECHANICAL SP of BILLINGS, MT. 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
PQS
Location
BILLINGS, MT
In business
since 1984
Status
Out of business (1987)
PLASTIC MECHANICAL SP built hulls across both HIN eras (1984–1987): 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
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PLASTIC MECHANICAL SP HIN FAQ
What does a PLASTIC MECHANICAL SP HIN look like?
It starts with the three characters "PQS" — the Manufacturer Identification Code the US Coast Guard assigned to PLASTIC MECHANICAL SP — followed by a 5-character hull serial and a 4-character date code, 12 characters total. PLASTIC MECHANICAL SP built hulls across both HIN eras (1984–1987): 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 PLASTIC MECHANICAL SP still in business?
USCG records list PLASTIC MECHANICAL SP 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 PLASTIC MECHANICAL SP HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. PLASTIC MECHANICAL SP built hulls across both HIN eras (1984–1987): 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 MT
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "PLASTIC MECHANICAL SP HIN Decoder," carwhere.com/hin-decoder/pqs, last verified 2026-06-12.