One Jose Ceuvro Magarita coming up Dale. Hell, take the pitcher.
I do have extensive blueprints for the boat already from the designer. But a lot of the main frames and such have to be lofted. All dimensions come from supplied tables and it's making sense of those tables. At least for me. I've never built anything bigger than an 18' fibreglass canoe.
The purpose of the CAD is to take those numbers and translate them to something tangible so they make sense before having to layout a 42'x12' area and draw them full scale. Eventually it will have to be done to size, but this will eliminate any errors in translation of the numbers. Once a line is drawn you can actually see what it is supposed to look like.
The frames for the main and float hulls will be constructed out of Douglas Fir marine plywood. In fact most of the framing including the keel will be made out of this. Cabin bulkheads and floor will probably be Teak marine plywood.
The outer hull will be red cedar covered with epoxy.
A good look and layout of the boat can be found here:
Hartley 422
Some of the drawings are of the 421. Only difference is the 422 has a wheel instead of a tiller and it doesn't have a keel board.
Both of these boats are proto-types and have never been built.