Robert Durham boat history.
https://durhamhistoricalsociety.org/the-durham-boat/
Excerpt: "Other ethnic groups had seafaring/boat building backgrounds, but the Scandinavian people had been building similar boats to the Durham boat in their native countries for centuries, and according to Hulan, no such similar boats were to be found in the history of the English or Dutch. They were masters of deep water vessels and not these smaller and light drafted boats."
https://www.youtube.com/watch?v=V_3H_Y5QUWw