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The crab claw sail is a fore-and-aft triangular sail with spars along upper and lower edges. The crab claw sail was first developed by the Austronesian peoples by at least 2000 BCE. It is used in many traditional Austronesian cultures in Island Southeast Asia , Micronesia , Island Melanesia , Polynesia , and Madagascar .
A mast-aft rig is a sailboat sail-plan that uses a single mast set in the aft half of the hull. The mast supports fore-sails that may consist of a single jib, multiple staysails, or a crab claw sail. The mainsail is either small or completely absent. Mast-aft rigs are uncommon, but are found on a few custom, and production sailboats. [1]
Instead it has a "crab claw" sail, [1] and is further controlled by the skillful use of fore and aft trim—moving the boat's balance point, that is the center of resistance relative to the center of effort—to control her heading. [1] [3] This is essentially like a wind surfer. See Sail twist.
A tepukei, tepuke or TePuke is a Polynesian boat type, characterized by its elaborate decking, its submerged hulls and symmetrical "crab claw" sail slender foil or radically extended tips claw sail (Te Laa). Tepukei boats are produced primarily by the Polynesian-speaking inhabitants of Taumako (Duff Islands), and have been occasionally borrowed ...
The bottom corner of the crab claw sail is moved to the other end, which becomes the bow as the boat sets off back the way it came. The mast usually hinges, adjusting the rake or angle of the mast. The crab claw configuration used on these vessels is a low-stress rig, which can be built with simple tools and low-tech materials, but it is ...
The two masts are rigged with crab claw sails, with bermuda rigged sails for safety during long voyages. [3] It is fitted with a 1 kW photovoltaic array powering a 4 kW electric motor. [ 1 ] It was constructed at Salthouse Boatbuilders in Auckland , New Zealand . [ 3 ]
Bigiw with tanja, crab claw, and spritsails from the Island Garden City of Samal, Davao del Norte. Bigiw is a small double-outrigger sailboat native to the islands of Mindanao (particularly in the Island Garden City of Samal), Visayas, and Palawan in the Philippines. It is used for personal transport or small-scale fishing and can hold one to ...
An unusual type of double-outrigger boat design, preserved in scale models in the Pitt Rivers Museum, forms a triangle shape. The front ends of the outriggers are attached directly to the hull, while the rear ends are splayed out. These boats were small and used exclusively as passenger ferries in the Pasig River of the Philippines. [24]
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