Catamaran
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A catamaran is a watercraft with two parallel hulls of equal size. The wide distance between a catamaran's hulls imparts stability through resistance to rolling and overturning; no ballast is required
The Spirit of Dallas catamaran on White Rock Lake
A Formula 16 beachable catamaran
Powered catamaran passenger ferry at Salem, Massachusetts, United States
A carved and painted voyaging catamaran with tanja sails of the Micronesian inhabitants of Hermit Islands, Bismarck Archipelago (c. 1914)
Outrigger boat
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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 cano
Samudra Raksa ship, a replica of Javanese 8th century double outrigger vessel depicted in Borobudur bas relief. From 2003 to 2004 it sailed from Indonesia to Madagascar and to Ghana.
Single-outrigger canoes from Polynesia
A double-outrigger canoe from the Philippines
A bas relief of Borobudur ship, a double outrigger vessel depicted in 8th century Borobudur temple, Java, Indonesia.