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Emergency free ascent (EFA) is like a controlled emergency swimming ascent without a regulator in the mouth. It is considered unacceptably hazardous for training purposes by some agencies. [6] [7] Emergency swimming ascent (ESA) is a free ascent where the diver swims to the surface at either negative or 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 – Ascent where there may be a small amount of breathing gas which becomes available due to ambient pressure reduction. Cut free from entanglement. Ditch weights to establish buoyancy – Removal of some or all ballast weights to establish neutral or positive buoyancy underwater, or to establish positive ...
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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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In a controlled emergency swimming ascent (CESA), the ascent remains under control and is performed at a safe rate. In an emergency swimming ascent (ESA), the diver swims to the surface at either negative or approximately neutral buoyancy. Other forms of ascent which may be considered emergency ascents are:
A U.S. appeals court has rejected British socialite Ghislaine Maxwell's request to revisit its decision upholding her conviction for helping the late financier Jeffrey Epstein sexually abuse ...