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A marine parachute anchor for a large yacht awaiting bagging up. A conical sea anchor with tripline (from an illustration in The Sailors Handbook by Halsey C. Herreshoff). An early wooden drogue. A sea anchor (also known as a parachute anchor, drift anchor, drift sock, para-anchor or boat brake) is a device that is streamed from a boat in heavy ...
During the ill-fated 1979 Fastnet race, of 300 yachts, 158 chose to adopt storm tactics; 86 "lay ahull", whereby the yacht adopts a "beam on" attitude to the wind and waves; 46 ran before the wind under bare poles or trailing warps/sea anchors, and 26 hove to. 100 yachts suffered knock downs; 77 rolled (that is turtled) at least once.
Later capstans were made entirely of iron, with gearing in the head providing a mechanical advantage when the bars were pushed counterclockwise. One form of capstan was connected by a shaft and gears to an anchor windlass on the deck below. On riverine vessels, the capstan was sometimes cranked by steam power. [3]
An earth anchor is a device designed to support structures, most commonly used in geotechnical and construction applications. Also known as a ground anchor , percussion driven earth anchor or mechanical anchor , it may be impact driven into the ground or run in spirally, depending on its design and intended force-resistance characteristics.
In urban areas with pedestrian traffic around the pole, a variation called a sidewalk guy is often used: the guy line extends diagonally from the top of the pole to a spar brace extending out from the middle of the pole, then continues vertically to the ground. Thus, the bottom length of the guy is vertical and does not obstruct headroom, so a ...
Oar a wooden pole enlarged on one end to resist the water when pulled. Painter: a short line at the bow of a small boat for tying it off. Parrot beak: a spring-loaded stainless steel fitting on the end of a spinnaker pole attaching it to the sail. Pintle: the male half of a pintle-and-gudgeon pivot or hinge.
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A deep-penetrating anchor (DPA) is conceptually similar to a torpedo anchor: it features a dart-shaped, thick-walled, steel cylinder with flukes attached to the upper section of the anchor. A full-scale DPA is approximately 15 metres (49 ft) in length, 1.2 metres (4 ft) in diameter, and weighs on the order of 50–100 tonnes (49–98 long tons ...
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