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Shade sail over playground in Australia. A shade sail − or somewhat more precise a textile sunshade sail or a textile sun protection sail − is a device to create outdoor shade based on the textile basic technology that can be found in a ship's sail. [1] Shade sails use a flexible membrane tensioned between several anchor points. While ...
Sails made with synthetic fibers. Sailcloth is cloth used to make sails. It can be made of a variety of materials, including natural fibers such as flax, hemp, or cotton in various forms of sail canvas, and synthetic fibers such as nylon, polyester, aramids, and carbon fibers in various woven, spun, and molded textiles.
The most attractive, durable polytarp sails are usually made from a heavier white polytarp material. Generally, polysails are made from white ultraviolet-protected (UV-protected) material that is 12–16 mils (0.30–0.40 mm) thick (1 mil is .001 inches) and weighs about 6–8 ounces per square yard (200-270 grams per square meter) —about twice the weight and thickness of the common colored ...
The pole is attached to the mast and holds the windward edge of the sail in position. Lines that control the spinnaker pole are called guys or braces . The spinnaker pole may be allowed to raise and lower with the force of the wind, or it may have lines attached to it to raise (the topping lift ) and lower (the foreguy or downhaul ) the angle ...
Clewlines and buntlines are lines used to handle the sails of a square rigged ship. The leechlines are clearly visible running inwards and upwards from the edges of the sail. The buntlines up the front of the sail can be seen too, but their run to the blocks on the shrouds is obscured because the sail is set on a lifting yard.
Spring sails were invented by Scottish millwright Andrew Meikle in 1772. The sail is divided into a number of bays, each having a number of shutters. All the shutters are joined together by a shutter bar, and the force required for the wind to open the shutters is adjusted by a separate spring on each sail. Although automatic in operation, the ...