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Swim ladder, a ladder used by swimmers to get out of the water, often on boats. Telescoping ladder, commonly used to refer to a hybrid between a step ladder and an extension ladder with 360-degree hinges; has three parts and can be taken apart to form two step ladders; e.g. Little Giant.
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. On late 19th-century warships, this kind of ladder would replace the normal fixed ladders on deck during battle.
Leschi also has a 55-foot (17 m) telescoping crane with ladder and fire line for use against container ship fires and the ship is able to douse itself with a cooling fog to allow for operation directly adjacent to a major fire. [2] [11]
In the case of a yacht, the choice of the most suitable type of boarding ladder will depend on the size of the yacht, the space available on the dock, etc. [11] There are different types of boarding stairs: [12] Telescopic boarding stairs: These ladders extend and retract as needed. They are ideal for yachts with different deck heights.
Telescoping in mechanics describes the movement of one part sliding out from another, lengthening an object (such as a telescope or the lift arm of an aerial work platform) from its rest state. [1] In modern equipment this can be achieved by a hydraulics , but pulleys are generally used for simpler designs such as extendable ladders and amateur ...
The marines on deck would then be forced to climb a 12 ft (3.7 m) ladder to access to the corvus. [5] The French scholar Émile de St. Denis suggested the corvus featured a 36 ft (11 m) bridge with the mast hole set 12 ft (3.7 m) from the near end. The design suggested by de St. Denis, however, did not include an oblong hole and forced the ...
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