SKI BOATS OF WISCONSIN HIN Decoder
Hull Identification Numbers beginning with XSW were assigned by the US Coast Guard to SKI BOATS OF WISCONSIN of MILWAUKEE, WI. The company is recorded as out of business since 1980 — 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
XSW
Location
MILWAUKEE, WI
In business
—
Status
Out of business (1980)
SKI BOATS OF WISCONSIN hulls (1972–1980) predate the current HIN format — expect the legacy straight-year (MMYY) or model-year (M + year + month letter) date codes used 1972–1984.
Free · no account · the HIN is on the transom, upper starboard (right) corner
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SKI BOATS OF WISCONSIN HIN FAQ
What does a SKI BOATS OF WISCONSIN HIN look like?
It starts with the three characters "XSW" — the Manufacturer Identification Code the US Coast Guard assigned to SKI BOATS OF WISCONSIN — followed by a 5-character hull serial and a 4-character date code, 12 characters total. SKI BOATS OF WISCONSIN hulls (1972–1980) predate the current HIN format — expect the legacy straight-year (MMYY) or model-year (M + year + month letter) date codes used 1972–1984.
Is SKI BOATS OF WISCONSIN still in business?
USCG records list SKI BOATS OF WISCONSIN as out of business since 1980. 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 SKI BOATS OF WISCONSIN HIN?
On current-format HINs the last two characters are the model year and the 9th–10th encode the certification month and year. SKI BOATS OF WISCONSIN hulls (1972–1980) predate the current HIN format — expect the legacy straight-year (MMYY) or model-year (M + year + month letter) date codes used 1972–1984. Enter the full 12-character HIN above and the decoder works it out, including the legacy formats.
Other builders in WI
Sources: USCG Manufacturer Identification Code database (uscgboating.org, refreshed monthly) · HIN format per 33 CFR 181 subpart C. Cite this page: CarWhere, "SKI BOATS OF WISCONSIN HIN Decoder," carwhere.com/hin-decoder/xsw, last verified 2026-06-12.