Search results
Results from the WOW.Com Content Network
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.
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.
For scuba, a bailout bottle, self-contained ascent bottle or emergency gas supply is a small diving cylinder meant to be used as an alternate air source to allow a controlled ascent with any required decompression, in place of a controlled emergency swimming ascent, which will not allow required decompression. The use of a bailout bottle may be ...
This page was last edited on 15 February 2024, at 19:42 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
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 "no-stop dive", also commonly but inaccurately referred to as a "no-decompression" dive is a dive that needs no decompression stops during the ascent according to the chosen algorithm or tables, [11] and relies on a controlled ascent rate for the elimination of excess inert gases. In effect, the diver is doing continuous decompression during ...
When an unforeseen emergency occurs, the diver, and where relevant, the diving team, must make the best of the situation using the skills, knowledge, intelligence and facilities they have available. Many types of emergency are best avoided simply by not diving in circumstances beyond those in which the diver is known to be competent.
Buddy breathing is a rescue technique used in scuba diving "out-of-gas" emergencies, when two divers share one demand valve, alternately breathing from it.Techniques have been developed for buddy breathing from both twin-hose and single hose regulators, but to a large extent it has been superseded by safer and more reliable techniques using additional equipment, such as the use of a bailout ...