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An anchor windlass within the forecastle on the main deck of the sailing ship Balclutha. The vertical shaft is rotated by crew driving a portion of the capstan above. 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.
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.
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.
Holding ground is the area of sea floor that holds an anchor, and thus the attached ship or boat. [4] Different types of anchor are designed to hold in different types of holding ground. [5] Some bottom materials hold better than others; for instance, hard sand holds well, shell holds poorly. [6] Holding ground may be fouled with obstacles. [6]
An anchor secured to the ship's side. The projecting beam the anchor hangs from when not secured is a cathead (left). The anchor has a stock (cross-piece, in this case wooden) below, and curved flukes above (end-on); the shank is the near-vertical metal bar running between them, lashed with the shank painter Cathead on bow of the barque James Craig; the cat tail protrudes onto the deck and is ...
Most marine GPS units have an anchor watch alarm capability. anchor winch A horizontal capstan in the bow used for weighing anchor. [2] anchorage Any place suitable for a ship to anchor, often an area of a port or harbor. anchor's aweigh Said of an anchor to indicate that it is just clear of the bottom and that the ship is therefore no longer ...
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