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Kevin- CG, CB- Center gravity , center of balance is what i think you mean, yes Lateral plane, waterplane area and all the design coefficients of a hull while you're editing the surfaces I dont know. I will assume it will unwrap/develop the surfaces? Yes it will with the convert to sheet metal tool....

I am using NX 7 for the lines. I will put up my design when I am done with it.

Thanks I appreciate your writings, I want to go sheet and build sheet skin first and then frame and I also am making my own plans. I could probably figure out a way to set up the bottom and sides but I would like to know how it is done. Probably with some kind of jig. The part Im stuck on is how to ...

Thank you, Yeah this is not mine. The keel is the part I need to find how it works and I wanted to know if this was standard. I found out its not, problem is getting a extruded keel and chines.

I am starting a 19 ft cuddy plate boat. I want to build it with a subfloor with bulkheads and full aluminum floor no ribs. I dont know how the hull bottom and sides are made. Is this the way it is normaly done?