I'm with Mark on this one. I always thought a dory was one of those small rowboats which they stacked on the deck of the Cod fishing boats.

Ya know pointed at each end and tapered sides so that they nest.

The only boat that I have built was a 16ft punt. We used locally available wood which was cedar siding. It was great fun for a couple of seasons. By the third year it became obvious that siding is not the material of choice for boat building.