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In 1961, aerial devices saw a change as Crown introduced its first Firecoach snorkel truck (bucket lift). [3] In 1966, Crown produces its first company-produced tiller-based aerial device, though a 2-axle ladder truck made its debut the same year. [ 3 ]
A lifting bag is an item of diving equipment consisting of a robust and air-tight bag with straps, which is used to lift heavy objects underwater by means of the bag's buoyancy. The heavy object can either be moved horizontally underwater by the diver or sent unaccompanied to the surface. [1] Lift bag appropriate capacity should match the task ...
Replacing an advertising poster in London using an aerial work platform. An aerial work platform (AWP), also an aerial device, aerial lift, boom lift, bucket truck, cherry picker, elevating work platform (EWP), mobile elevating work platform (MEWP), or scissor lift, is a mechanical device used to provide temporary access for people or equipment to inaccessible areas, usually at height.
Royal Navy practice before 1962 is described by Robert Davis in his book "Deep Diving and Submarine Operations", and the Royal Navy's The Diving Manual of 1943. Rate of ascent to the first stop was limited to 60 feet per minute, largely to avoid overshooting the first stop, an artifact of the method for measuring depth by pneumofatometer off ...
Confédération Mondiale des Activités Subaquatiques (CMAS; known in English as the World Underwater Federation) is an international federation that represents underwater activities in underwater sport and underwater sciences, and oversees an international system of recreational snorkel and scuba diver training and recognition.
Basic Cave Diving: A Blueprint for Survival, also commonly referred to by the subtitle alone, A Blueprint for Survival, is a short book on safe scuba diving procedures for cave diving by pioneer cave diver Sheck Exley, originally published in 1979, by the Cave Diving Section of the National Speleological Society.
A swimmer's snorkel is a tube bent into a shape often resembling the letter "L" or "J", fitted with a mouthpiece at the lower end and constructed of light metal, rubber or plastic. The snorkel may come with a rubber loop or a plastic clip enabling the snorkel to be attached to the outside of the head strap of the diving mask. Although the ...
diver lift. See: Dive boat#Diver lifts. A mechanism used to lower one or more divers into the water to a shallow depth, and to lift them out again. diver training manual. See also: Training manual, Diving manual. A publication containing instructional material for diver training.