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Crank (mechanism) Hand crank for a winch on a sailboat - commonly referred to as a winch handle. A crank is an arm attached at a right angle to a rotating shaft by which circular motion is imparted to or received from the shaft. When combined with a connecting rod, it can be used to convert circular motion into reciprocating motion, or vice versa.
A winch is a mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust the tension of a rope or wire rope (also called "cable" or "wire cable"). In its simplest form, it consists of a spool (or drum) attached to a hand crank. Traditionally, winches on ships accumulated wire or rope on the drum; those that do ...
For boats using a chain to travel along a river, see Chain boat. A cable ferry (including the types chain ferry, swing ferry, floating bridge, or punt) is a ferry that is guided (and in many cases propelled) across a river or large body of water by cables connected to both shores.
The history of the anchor dates back millennia. The most ancient anchors were probably rocks and many rock anchors have been found dating from at least the Bronze Age. [ 1] Many modern moorings still rely on a large rock as the primary element of their design. However, using pure mass to resist the forces of a storm only works well as a ...
Here are the basics you should have on hand. ... a ground anchor system or tie-down kit with a sales price of $100 or less. ... (powered by battery, solar, hand-crank, or gas) with a sales price ...
Look up davit in Wiktionary, the free dictionary. A davit ( / ˈdeɪvɪt /) [ 1] is any of various crane-like devices used on a ship for supporting, raising, and lowering equipment such as boats and anchors. [ 2] Davit systems are most often used to lower an emergency lifeboat to the embarkation level to be boarded.
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