Original Description:
Longboats were the main form of transport for the vikings, who managed to sail from Denmark to the far reaches of Africa, Persia, and even America, or "Vinland" as they called it (Via Greenland).
Descendants of these boats were also used in Scotland up until the late 19 Century, as with the Long Houses (Also featured in this 3D worldl), which in Scotland became "Black Houses".