From ship to boat
By Anatoly Liberman
The history of boat is no less obscure than the history of ship. Britain was colonized by Germanic-speakers in the fifth century CE from northern Germany and Denmark. It is hard to imagine that the invaders, who became known to history as the Angles, Saxons, and Jutes and who must have known a good deal about navigation, stopped using boats after they crossed the Channel. But a cognate of boat has not turned up in any modern dialect spoken on the southern coast of the North Sea.