NW RIVER SUPPLIES HIN Decoder
Hull Identification Numbers beginning with WSI were assigned by the US Coast Guard to NW RIVER SUPPLIES of BOISE, ID. 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
WSI
Location
BOISE, ID
In business
since 1982
Status
Listed active in USCG records
NW RIVER SUPPLIES built hulls across both HIN eras (1982–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
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NW RIVER SUPPLIES HIN FAQ
What does a NW RIVER SUPPLIES HIN look like?
It starts with the three characters "WSI" — the Manufacturer Identification Code the US Coast Guard assigned to NW RIVER SUPPLIES — followed by a 5-character hull serial and a 4-character date code, 12 characters total. NW RIVER SUPPLIES built hulls across both HIN eras (1982–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 NW RIVER SUPPLIES still in business?
USCG records list NW RIVER SUPPLIES of BOISE, ID in the MIC database (registered 1982).
How do I decode the year on a NW RIVER SUPPLIES HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. NW RIVER SUPPLIES built hulls across both HIN eras (1982–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 ID
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "NW RIVER SUPPLIES HIN Decoder," carwhere.com/hin-decoder/wsi, last verified 2026-06-12.