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The combined port anchor windlass and winch of the modern ferry Stena Britannica. The hydraulically operated brake and pawl allows the anchor to be dropped from the ship's bridge. [citation needed] A windlass is a machine used on ships that is used to let-out and heave-up equipment such as a ship's anchor or a fishing trawl. On some ships, it ...
A windlass cocking mechanism on crossbows was used as early as 1215 in England, and most European crossbows had one by the Late Middle Ages. [6] Windlasses are sometimes used on boats to raise the anchor as an alternative to a vertical capstan (see anchor windlass). The handle used to open locks on the UK's inland waterways is called a windlass.
A pawl is used in an anchor windlass to prevent a free-spooling chain by grabbing and snubbing an individual link. Similar mechanisms include a Devil's claw, or a claw and dog. Ratchet A pawl is used in combination with a ratchet gear in socket wrenches, bicycle freehubs, winches, ratchet reels for diving, fishing, and many other applications ...
Capstan winches were also important on sailing trawlers (e.g. Brixham trawlers) as a means for fetching in the nets after the trawl. When they became available, steam powered capstan winches offered a great saving in effort. These used a compact combined steam engine and boiler below decks that drove the winch from below via a shaft.
As well as dropping the anchor in position, the longboat would often be used for weighing (raising) the anchor after use. To do this, a windlass was usually fitted amidships and a davit in the stern (or sometimes the bow) to provide a fair lead from the buoy rope [a] or cable to the windlass. A substantial degree of buoyancy was needed in the ...
The location to drop the anchor should be approached from down wind or down current, whichever is stronger. As the chosen spot is approached, the vessel should be stopped or even beginning to drift back. The anchor should initially be lowered quickly but under control until it is on the bottom (see anchor windlass). The vessel should continue ...
These can be attached to tugboats to increase their pulling power or to the stranded ship for pulling using its own winches. [ 1 ] [ 2 ] US Navy standard beach gear is a ground tackle system consisting of anchors, chain, wire rope and heaving equipment.
In preparation for scuttling, salvors stripped Mesquite of valuable parts, including the propeller, cargo boom, and anchor windlass which the Coast Guard wanted for its stores. Much loose material was hauled off. Most of the superstructure was cut away. Remaining fuel, oil, paint, and other toxic material was removed.
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