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Controlled emergency swimming ascent (CESA) is an emergency swimming ascent which remains under control and which is performed at a safe ascent rate, with continuous exhalation at a rate unlikely to cause injury to the diver by lung overexpansion. The second stage regulator is retained in the mouth and may be breathed off if gas becomes ...
Lost weights ascent with flare – Mitigation of an incident where the diver cannot neutralise positive buoyancy. Controlled buoyant emergency ascent – Fine control of buoyancy to ascend at an acceptably safe rate. Emergency swimming ascents – Emergency ascent where the diver actively swims upward at approximately neutral buoyancy.
A pony bottle or pony cylinder is a small diving cylinder which is fitted with an independent regulator, and is usually carried by a scuba diver as an auxiliary scuba set.In an emergency, such as depletion of the diver's main air supply, it can be used as an alternative air source or bailout bottle to allow a normal ascent in place of a controlled emergency swimming ascent.
Controlled emergency swimming ascent; D. Diver rescue; E. Emergency air sharing; Emergency ascent; Emergency breathing gas sharing; Emergency buoyant ascent;
Controlled emergency swimming ascent; D. DAN World; Decompression chamber operation; Decompression planning; Deep air diving blackout; Delta-P (hazard)
When no redundant air supply is available, the diver can make a controlled emergency swimming ascent. The diver starts to swim up exhaling steadily along the ascent unless trying to inhale. The mouthpiece is kept in as the cylinder still contains some air and it will become available as the ambient pressure decreases.
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Controlled emergency swimming ascent (CESA) – Emergency procedure for scuba divers when out of air; Coral reef – Outcrop of rock in the sea formed by the growth and deposit of stony coral skeletons; Coral Reef Alliance – Non-profit, environmental NGO focused on protecting coral reefs