Westsail Owners Alliance - Thread: "Hull Identification Number"
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Thread: "Hull Identification Number"

12,268 posts on 2,444 threads   •   From Mar 07, 2004 - Jan 08, 2012

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Hull Identification Number


Michael Dougan

I've heard a few different explanations about how to decode the hull identification number (HIN)... I wonder if you can set the record straight?

Mine is WSSK04790975

And from that I understand that it was a hull kit, hull number 479, produced in September, 1975?

I've heard that the third and fourth characters might tell you which factory produced the hull, and that the zero 4th from the end is just a spacer... others say the zero in the fifth position indicates which model (a 3 there for the W43?)

Also, if there were more than one factory producing the hulls, would the 3 character hull number be unique across all factories, or just within one factory?

Thanks!


Bud Taplin
(Member)

Michael,

There is an explanation of the hull numbers on Page D-1 of my Westsail Service Manual. The WSSK denotes the boat went out as a kit, but unknown as to how much was done by Westsail, and how much left for the owner. The 0479 is the hull number, and when Westsail was laminating the 32's at the Wrightsville Beach plant, they were assigned some of the numbers in sequence. The last 4 numbers 0975 denote that the hull was laminated in September, of 1975. Or at least, the laminating shop was given the order in September.

The Wrightsville Beach plant had their own numbering machine, and their numbers were about 3/4" high. The Costa Mesa plant had a numbering machine with letters about 3/8" high. Some of the first boats laminated by the Wrightsville Beach plant used numbers sent out from the West Coast numbering machine, to further stir the mix. Those boats were probably laminated in the spring of 1974, just after the plant opened up.

On the W43's, they put a 3 after the WSSF or WSSK to prevent the confusion with the W42's.

I hope this explanation is clear as mud, and you understand it, as we expect you to explain it at the next rendezvous.

Bud

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