I am sorry, but I was just looking at unrolling the single surfaces. In Rhino the bottom plate does not unroll properly. This one I can unroll in some other solutions. But the next plate does not unroll in my software, but in Rhino it unrolls within tolerance. I don´t think that it is a good idea to build the surfaces with so many cp stacked. David is absolutely right, hull surfaces that shall be unrollable should be designed as ruled surfaces. And Pascal is of course right: it is not possible to make this shape from a single sheet of metal plate without a lot of stretching by using something like a deep draw process, just bending is not possible. What kind of boat do you want to build? Length ? Aluminium thickness? What process?
If the material is thick enough for welding - why don´t you just weld this piece?