Dutch,
the templates came from a kit that the builder bought from an outfit, I think from NH. He bought his wood from them too. I will try to find the name.
For any one looking at building this do not be intimidated by the joinery. Fussy fitting if you do the inlays and fancy stuff in the top shown, but the hull is an easy job due to the cove and bead 3\4 inch wide strips. They lay together easy and all you have to do is fit the end. Its only 1\4 inch thick so sanding and cutting with a hand saw are easy. The secret is in the cloth and epoxy after you finish which makes the thing a cored panel with curve which adds unbelievable stiffness.
No knock, but the builder was not a pro woodworker before starting this and we are all blow away at the shop at how fair the hull shape came out, and the top looks great with the contrasting wood color. Will be awesome with varnish.
I just like the curve shapes that could be suited to duck boat work with paint.
I put these pictures here to show another way to build a hull that was not a flat panel based shape, like a barnegat or a sneek or other.
The router bits for milling stock to cove and bead are available from Jasada or Infinity. A band saw would save stock when resawing, but a table saw would work fine.