salmobytes skrev:

That's an interesting boat!
Sort of canoe/dory hybrid, that can handle moving
water and a motor.

Is there a name for that boat? How can I find out
how to build one?

In Sweden they were/are simply called river boats. The shape makes it
easier travelling the rivers. They were quite common during the days of
timber flotation.
My Grandfather had one, and I have on numerous occasions had the
pleasure of riding both up and downstream River Byske. Easy to maneuver
and not to wide, the latter meaning that they will cut through the
current very well. All in all it is a very good soultion to travel up
and down rivers, unless a canoe is sufficient for one's needs.

/Roger