angler wrote:

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
/Roger

Thank you Roger. That's a start. I've been working with Google, but
have not yet found a boat building site that sells blueprints--Swedish,
Finnish or Norweigian, or whatever. That's what I want: blueprints.
That looks like a damn fine boat.