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Deep diving. Scuba diver using a rebreather with open circuit bailout cylinders returning from a 600-foot (180 m) dive. Deep diving is underwater diving to a depth beyond the norm accepted by the associated community. In some cases this is a prescribed limit established by an authority, while in others it is associated with a level of ...
Water Resistant mark. Water Resistant is a common mark stamped on the back of wrist watches to indicate how well a watch is sealed against the ingress of water. It is usually accompanied by an indication of the static test pressure that a sample of newly manufactured watches were exposed to in a leakage test. The test pressure can be indicated ...
Human physiology of underwater diving is the physiological influences of the underwater environment on the human diver, and adaptations to operating underwater, both during breath-hold dives and while breathing at ambient pressure from a suitable breathing gas supply. It, therefore, includes the range of physiological effects generally limited ...
Diving physics. 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.
High diving is the act of diving into water from relatively great heights. High diving can be performed as an adventure sport (as with cliff diving), as a performance stunt (as with many records attempts), or competitively during sporting events. It debuted at a FINA event at the 2013 World Aquatics Championships in Barcelona, after the sport ...
Decompression practice. Divers using the anchor cable as an aid to depth control during a decompression stop during ascent. To prevent or minimize decompression sickness, divers must properly plan and monitor decompression. Divers follow a decompression model to safely allow the release of excess inert gases dissolved in their body tissues ...
U.S. customary. ≈ 0.444 44 psi. The metre (or meter) sea water (msw) is a metric unit of pressure used in underwater diving. It is defined as one tenth of a bar. [1][2] The unit used in the US is the foot sea water (fsw), based on standard gravity and a sea-water density of 64 lb/ft 3. According to the US Navy Diving Manual, one fsw equals 0. ...
The AOWD is the second level qualification offered by several diving agencies following the American ANSI standard. At the first level, Open Water Diver, divers gain basic knowledge of skills, equipment and theory for diving to a recommended depth of about 18 metres (60 ft). [4] The AOWD is described by PADI as refining these skills, allowing ...