Sailing canoe with a crab claw shaped sail.
Related Terms |
SAILING_BOOM
A spar attached to the foot of a fore-and-aft sail.
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FOOT
1. the lower edge of any sail. 2. the bottom of a mast. 3. a measurement of 12 inches.
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HAND
To furl a sail.
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LEACH
The after edge of a sail.
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GAFF
A spar to support the head of a gaff sail.
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DOWNHAUL
A line used to control either a mobile spar, or the shape of a sail. A downhaul can also be used to retrieve a sail back on deck.
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BOOM VANG
A sail control that lets one apply downward tension on a boom, countering the upward tension provided by the sail. The boom vang adds an element of control to sail shape when the sheet is let out enough that it no longer pulls the boom down. Boom vang tension helps control leech twist, a primary component of sail power.
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CENTER OF EFFORT
The point of origin of net aerodynamic force on sails, roughly located in the geometric center of a sail, but the actual position of the center of effort will vary with sail plan, sail trim or airfoil profile, boat trim, and point of sail. Also known as center of pressure.
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BLUE PETER
A blue and white flag (the flag for the letter 'P') hoisted at the foretrucks of ships about to sail. Formerly a white ship on a blue ground, but later a white square on a blue ground.
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HALYARD
Originally, ropes used for hoisting a spar with a sail attached; today, a line used to raise the head of any sail.
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