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In underwater diving activities such as saturation diving, technical diving and nitrox diving, the maximum operating depth (MOD) of a breathing gas is the depth below which the partial pressure of oxygen (pO 2) of the gas mix exceeds an acceptable limit.
Underwater diving is practiced as part of an occupation, or for recreation, where the practitioner submerges below the surface of the water or other liquid for a period which may range between seconds to the order of a day at a time, either exposed to the ambient pressure or isolated by a pressure resistant suit, to interact with the underwater ...
black-water diving. see also: blue-water diving. Diving in mid-water at night where the bottom is out of diving range. blending stick. See also: Gas blending for scuba diving#Mixing the gases. Mixing tube in which gases are continuously mixed prior to intake by a compressor, usually at atmospheric pressure. [12]
The bell handling system lowers the diving bell of the US Navy's saturation fly-away diving system into the water. The bell is deployed from a gantry or A-frame, also known as a bell launch and recovery system (LARS), [36]: ch.13 on the vessel or platform, using a winch. Deployment may be over the side or through a moon pool. [41]
To dive safely with nitrox, the diver must learn good buoyancy control, a vital part of scuba diving in its own right, and a disciplined approach to preparing, planning and executing a dive to ensure that the ppO 2 is known, and the maximum operating depth is not exceeded.
Trimix scuba cylinder label IMCA Trimix cylinder shoulder colour code Alternative IMCA Trimix cylinder shoulder colour code. Trimix is a breathing gas consisting of oxygen, helium, and nitrogen. It is used in deep commercial diving, during the deep phase of dives carried out using technical diving techniques, [1] [2] and in advanced ...
A shallow water recreational air line diving system using a scuba cylinder on a float towed by the diver. saturation. See: Decompression theory. Condition where the inert components of the breathing gas dissolved in a diver's tissues are in equilibrium with the gas in the lungs. [43] saturation diving. Main article: Saturation diving
Diving physics, or the physics of underwater diving, is the basic aspects of physics which describe the effects of the underwater environment on the underwater diver and their equipment, and the effects of blending, compressing, and storing breathing gas mixtures, and supplying them for use at ambient pressure.