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A highly specialized form of rope ladder, typically used to embark and disembark pilots over the side of a ship. Sometimes confused with Jacob's ladders , but the design and construction of pilot ladders is governed tightly by international regulation and includes spreaders – elongated versions of the standard machined step – rather than ...
A pilot ladder has specific regulations on step size, spacing and the use of spreaders. It is the use of spreaders (long treads that extend well past the vertical ropes) in a pilot ladder that distinguishes it from a Jacob's ladder. When not being used, the ladder is stowed away, usually rolled up, rather than left hanging.
USS Artisan with USS Antelope (IX-109) and LST-120 in the dock at Espiritu Santo, New Hebrides Islands, 8 January 1945 Los Alamos (AFDB-7), with a repaired submarine at Holy Loch, Scotland in 1985 YFD-2 The first Yard Floating Dock built in 1901, arriving Pearl Harbor 23 October 1940 from New Orleans Naval Yard USS Pennsylvania in drydock USS Dewey, the second YFD, c. 1906–1907
Some dry docks are used during the construction of bridges, dams, and other large objects. For example, the dry dock on the artificial island of Neeltje-Jans was used for the construction of the Oosterscheldekering, a large dam in the Netherlands that consists of 65 concrete pillars weighing 18,000 tonnes each. The pillars were constructed in a ...
The Morse Dry Dock and Repair Company was a major late 19th/early 20th century ship repair and conversion facility located in New York City.Begun in the 1880s as a small shipsmithing business known as the Morse Iron Works, the company grew to be one of America's largest ship repair and refit facilities, at one time owning the world's largest floating dry dock.
AAW An acronym for anti-aircraft warfare. aback (of a sail) Filled by the wind on the opposite side to the one normally used to move the vessel forward.On a square-rigged ship, any of the square sails can be braced round to be aback, the purpose of which may be to reduce speed (such as when a ship-of-the-line is keeping station with others), to heave to, or to assist moving the ship's head ...