Sketch of double-hulled waka

This double canoe was sketched off the New Zealand coast in 1769 by Herman Spöring. It has a double spritsail rig and appears to be made from two canoes of different length and design lashed together. Archaeologist Atholl Anderson argues that the double spritsail was the most likely type of sailing rig used by the Polynesian voyagers who reached New Zealand in the 13th century.