Viking longships were used by Scandinavian mariners for everything from commerce to exploration to warfare. With roots in the stone age, longship design reached its zenith between the 9th and 13th centuries. Longships sported a series of oars nearly the entire length of the boat, and a rectangular sail.
A lot more info at the source.

Viking longships were used by Scandinavian mariners for everything from commerce to exploration to warfare. With roots in the stone age, longship design reached its zenith between the 9th and 13th centuries. Longships sported a series of oars nearly the entire length of the boat, and a rectangular sail.

A lot more info at the source.