The Walap is a traditional ocean-going sailing outrigger canoe from the Marshall Islands.
Like all pacific proas, they are always sailed with the outrigger to windward; they do not tack but "shunt" (reverse direction), so both ends of the boat are identical.
Walaps are not dugouts; only the keel is made of a single bread-fruit log when possible, and the rest are planks sewn together with coconut-fiber lashings, sealed with tree sap.
Five recognized styles exist: taburbur, malmel, mwijwitok, tojeik and jekad.
[1] Walaps may well represent the most advanced sailing technology of all stone-age cultures, only equaled by Fiji's drua.