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Dock levelers are stronger than dock plates and have similar ranges to dock boards, making them suitable not only for motorized fork lift trucks but also for master conveyors (for which neither dock plates or dock boards are suitable). Safety, also, is very high for this kind of product: Safety rules as EN1398 (European Standard) specifies the ...
The largest shiplifts can lift vessels up to 100,000 tons. [2] Because of this capacity, shiplifts have almost completely supplanted the older dry dock systems, most of which could handle only one vessel at a time. [3]
Whereas "shiplift" is the word that is normally used, the term used by Lloyd's register is "Mechanical Lift Dock". There are two different kinds of platform design, the articulated and the rigid. [1] The articulated platform has hinged connections between the main and the longitudinal beams. A rigid platform, the beams are bolted or welded ...
Dock lift – serves the same function as a leveler, but operates similar to a scissor lift to allow for greater height adjustments. Dock seals or dock shelters – compressible foam blocks against which the truck presses when parked; seals are used at exterior truck bays in colder climates, where this will provide protection from the weather.
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.
A modern container crane capable of lifting two 20-foot (6.1 m) long containers at once (end to end) under the telescopic spreader will generally have a rated lifting capacity of 65 tonnes. Some new cranes have a 120-tonne load capacity, enabling them to lift up to four 20-foot (6.1 m) or two 40-foot (12 m) containers.
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