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Hokule'a in 2009, with crab claw sails where the upper spars also function as fixed masts. Another evolution of the basic crab claw sail is the conversion of the upper spar into a fixed mast. In Polynesia, this gave the sail more height while also making it narrower, giving it a shape reminiscent of crab pincers (hence "crab claw" sail). This ...
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]
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 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 ...
Crab claw sails spread from Maritime Southeast Asia to Micronesia, Island Melanesia, Polynesia, and Madagascar via the Austronesian migrations. [3] Austronesians in Southeast Asia also later developed other types of fore-and-aft sails, such as the tanja sail (also known as the canted square sail, canted rectangular sail, or the balance lug sail).
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.
Sail plan of what Taumako builders call a tealolili (a smaller, simpler design than tepukei), The simplistic image below was drawn from photos of the Maunga Nefe and the Vaka Taumako Project. It shows a symmetrical double-ended hull, and long-armed claw sail, with windward and leeward booms.
The outrigger canoe was one of the key technological innovations of the Austronesian peoples.Although there is little archeological evidence due to perishable building materials, comparative reconstructions indicate that Austronesians already had the distinctive outrigger and crab claw sail technology from at least 2000 BCE.