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Bitts are paired vertical wooden or metal posts mounted either aboard a ship or on a wharf, pier, or quay. The posts are used to secure mooring lines, ropes, hawsers, or cables. [1] Bitts aboard wooden sailing ships (sometime called cable-bitts) were large vertical timbers mortised into the keel and used as the anchor cable attachment point. [2]
Attempts have been made to increase the safety of bridges with pin and hanger assemblies by adding some form of redundancy to the assembly. Retrofits that add redundancy to pin and hanger assemblies include adding a "catcher's mitt"—a short steel beam attached to the bottom of the cantilevered girder that extends out beneath the suspended girder to "catch" the suspended girder should ...
The tensioned portion of the rope would fasten the ship to the quay, hoist a foresail, lift a spar into position on the mast or be used to transfer cargo to or from a dock or lighter. A capstan is a vertical- axled rotating machine developed for use on sailing ships to multiply the pulling force of sailors when hauling ropes, cables , and hawsers .
Gaff rig [1] is a sailing rig (configuration of sails, mast and stays) in which the sail is four-cornered, fore-and-aft rigged, controlled at its peak and, usually, its entire head by a spar (pole) called the gaff. Because of the size and shape of the sail, a gaff rig will have running backstays rather than permanent backstays.
Key: 1. Forestay 2. Shroud 3. (Spreaders) 4. Backstay 5. Inner forestay 6. Sidestay 7. (Boom) 8. Running backstays Standing rigging on a square-rigged vessel (illustrated left), which supports a mast comprising three steps: main, top, and topgallant (illustrated right). The shrouds support each section laterally and the stays support each, fore ...
Materials have evolved from the use of Manilla rope to synthetic fibers, which include dacron, nylon and kevlar. [8] Running rigging varies between fore-and-aft rigged vessels and square-rigged vessels. They have common functions between them for supporting, shaping and orienting sails, which employ different mechanisms.
It is a large strong rope, wire or rod extending from the upper end of each mast and running down towards the deck of the vessel in a midships fore-and-aft direction. The shrouds serve a similar function but extend on each side of the mast and provide support in the athwartships direction.
Adjustable fairlead (lower right) leading to winch on sailboat Fairlead (Chock style) Three mooring lines running through fairlead on a Royal New Zealand Navy ship.. A fairlead is a turning point for running rigging like rope, chain, wire or line, that guides that line such that the "lead" is "fair", and therefore low friction and low chafe. [1]