High Quality Content by WIKIPEDIA articles! A proa, prau or perahu (also seen as prahu) is a type of multihull sailing vessel. While the word perahu and proa are generic terms meaning boat their native language, proa in Western languages has come to describe a vessel consisting of two (usually) unequal length parallel hulls. It is sailed so that one hull is kept to windward, and the other to leeward, so that it needs "shunt" to reverse direction when tacking. The English term proa most likely specifically refers the South Pacific proa as detailed by the analysis of a Micronesian proa by the British ship The Centurion. The perahu traditional outrigger boat is most numerous in the various islands of Indonesia, Malaysia, and the Philippines. These differ from the South Pacific vessels. Traditional proas superficially resemble outrigger canoes, but have a buoyant lee hull and a denser, ballasted hull to windward for stability.

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