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Outrigger boats are various watercraft featuring one or more lateral support floats known as outriggers, which are fastened to one or both sides of the main hull. They can range from small dugout canoes to large plank-built vessels.
Multihull ships are also derived from outrigger boats. [2] In an outrigger canoe and in sailboats such as the proa, an outrigger is a thin, long, solid, hull used to stabilise an inherently unstable main hull. The outrigger is positioned rigidly and parallel to the main hull so that the main hull is less likely to capsize.
One analysis of wa under sail indicated "conclusively that these primitive craft are superior to a modern boat on significant points of sailing." [ 1 ] They were estimated by Anson in 1776 to be able to move at or perhaps beyond wind speed, and to have better windward pointing ability than any craft previously encountered.
USA-17—a 90-foot-long (27 m) trimaran, type BOR90. A traditional paraw double-outrigger sailboat from the Philippines. A trimaran (or double-outrigger) is a multihull boat that comprises a main hull and two smaller outrigger hulls (or "floats") which are attached to the main hull with lateral beams.
The two colonial service Acheron-class torpedo boats were built by the Atlas Engineering Company at Sydney in 1879 for the New South Wales naval service. They were originally armed with a single spar torpedo , but this was replaced in 1887 with two 14-inch automotive torpedoes .
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Austronesians used distinctive sailing technologies, namely the catamaran, the outrigger ship, tanja sail and the crab claw sail.This allowed them to colonize a large part of the Indo-Pacific region during the Austronesian expansion starting at around 3000 to 1500 BC, and ending with the colonization of Easter Island and New Zealand in the 10th to 13th centuries AD.
Ngalawa from Chumbe Island, Tanzania. The ngalawa or ungalawa is a traditional, double-outrigger canoe of the Swahili people living in Zanzibar and the Tanzanian coast. [1] It is usually 5–6 m long and has two outriggers, a centrally-placed mast (often inclining slightly towards the prow) and a single triangular sail.