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Routine scuba diving procedures (order may vary slightly, and some are also relevant to surface supplied diving, though details may vary): Dive planning – The process of planning an underwater diving operation. Selection of equipment – A diver is expected to be able select appropriate equipment and check it for fit and function.
The definitive equipment for surface-supplied diving is the breathing apparatus which is supplied with primary breathing gas from the surface via a hose, which is usually part of a diver's umbilical connecting the surface supply systems with the diver, sometimes directly, otherwise via a bell umbilical and bell panel.
Surface-supplied diver at the Monterey Bay Aquarium, Monterey, California US Navy Diver using Kirby Morgan Superlight 37 diving helmet [1]. Surface-supplied diving is a mode of underwater diving using equipment supplied with breathing gas through a diver's umbilical from the surface, either from the shore or from a diving support vessel, sometimes indirectly via a diving bell. [2]
Use of surface supplied breathing equipment. [7] Running out of breathing gas because of being trapped or lost in enclosed spaces underwater, such as caves or shipwrecks. [23] Appropriate safety equipment and procedures to avoid getting lost (cave lines). [23] Specific training for overhead diving. See cave diving and wreck diving. [23]
Some surface supplied diving equipment is heavy and cumbersome, and the diver is usually assisted with dressing in by a diver's attendant, who is often also a diver, so the skills of assisting a diver to dress in are necessary for the diver. [1] The equipment involved includes: Exposure suit – Wetsuit, dry suit or hot water suit.
Professional diving operations are usually formally planned and the plan documented as a legal record that due diligence has been done for health and safety purposes. [ 3 ] [ 4 ] Recreational dive planning may be less formal, but for complex technical dives , can be as formal, detailed and extensive as most professional dive plans.
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Equipment for planning and monitoring decompression includes decompression tables, surface computer software and personal decompression computers. There is a wide range of choice: A decompression algorithm is used to calculate the decompression stops needed for a particular dive profile to reduce the risk of decompression sickness occurring ...
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