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Woman performing a "swallow dive", 1937. Diving is the sport of jumping or falling into water from a platform or springboard, usually while performing acrobatics.Diving is an internationally recognised sport that is part of the Olympic Games.
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]
A diving stage or basket is used to lower divers to the underwater work site and raise them back to the surface after the dive. This provides a relatively safe and easy way of entering the water and getting out again onto the deployment platform. In-water decompression is facilitated as the stage can be held at a reasonably constant depth.
These are surface oriented dives, where the diver starts and ends the dive at atmospheric pressure, and saturation dives, where the diver remains under pressure close to that of the working depth before, during, and after the underwater dive exposure, and is compressed before a series of dives, and decompressed at the end of the series of dives.
The IDSA training standard comprises 5 modules, of which Module A is theory common to all modes of diving, Module B is commercial scuba diving, Module C is inshore air diving to 30 msw and associated underwater work, Module D is surface supplied offshore air diving to 50 msw using a wet bell and hot water suit, also called extended range ...
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.
Time penalty in a repetitive dive equivalent to time at depth which would produce the residual nitrogen in the diver at the start of the dive. residual pressure Pressure of the gas remaining in a partly used cylinder from the previous fill. resort dive. Also: introductory dive, introductory diving experience, or trial dive. See: Introductory diving
If a long surface swim is necessary, the scuba set function and pressure should be checked again just before descent. A swim through heavy kelp can roll the cylinder valve closed or partially closed. Responsibility for pre-dive checks for professional divers is more complex, based on the concept of the duty of care. It is usually defined in an ...