Deathwish,

go to http://www.metaseq.net/english/index.html it's a freeware download, although looks like there's been a lot of updates since I downloaded it.

I created the 3d model from hull frames that I'd drawn in auto cad from a side view and a top view, then used the dimensions to locate each point of the hull on the keel/chine etc, or you could just do the whole thing in metasequoia.

The software was originally designed for modeling areoplanes for FMS which is an RC plane trainer have a look at this link it will help you get started

http://rcp.web.infoseek.co.jp/Rc_hp2...asequoia_e.htm

There are also a number of hull design software programs out there, but I've never had that much success with them.

Geoff