Great base you got there. Good job!
But err... I don't understand.. how can you test a vessel in VS before you do anything..
You at least have to create it first.. right??

Do you make your hulls in sketchup, or do you use something like delftship?
I find that particular piece of software very handy. Not that I do much modeling or anything.. Too much other things to do unfortunatly, but I play around with it a bit now and again. And with GMAX a little bit.
Fred