I have an excellent condition wheeling machine that can be used for shaping 3/8" + plate. I have used it on 3/8 alum. and 1/8 Stainless. It runs...
Let me add some more info since a number of you have viewed my original post. 1. The frame must be very stout. My machine is a bit of overkill...
If you are near San Diego, you might look at my Powered English Wheel to see if this type of machine could be an option for your boat building...