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  2. Emergency ascent - Wikipedia

    en.wikipedia.org/wiki/Emergency_ascent

    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.

  3. Category:Underwater diving emergency procedures - Wikipedia

    en.wikipedia.org/wiki/Category:Underwater_diving...

    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.

  4. Diving procedures - Wikipedia

    en.wikipedia.org/wiki/Diving_procedures

    Controlled emergency swimming ascentAscent 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 ...

  5. Ascending and descending (diving) - Wikipedia

    en.wikipedia.org/wiki/Ascending_and_descending...

    One of the most important criteria for a controlled ascent is control of the ascent rate, both during the periods of active ascent (pulls), and periods of staged decompression (stops). [ 5 ] Maintaining a steady ascent rate at less than 60 feet per minute is challenging to scuba divers without an accurate depth reference.

  6. Index of underwater diving: A–C - Wikipedia

    en.wikipedia.org/wiki/Index_of_underwater_diving...

    Buoyant ascent – Type of emergency ascent in diving; Buoyant tethered ascent, also known as Emergency tethered ascent – Positive buoyancy emergency ascent using a reel upline; Burst disc, also known as rupture disc – Non-closing over-pressure relief device; Byford Dolphin – Semi-submersible offshore drilling rig

  7. Scuba skills - Wikipedia

    en.wikipedia.org/wiki/Scuba_skills

    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:

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  9. Diving weighting system - Wikipedia

    en.wikipedia.org/wiki/Diving_weighting_system

    Buoyancy control is considered both an essential skill and one of the most difficult for the novice to master. Lack of proper buoyancy control increases the risk of disturbing or damaging the surroundings, and is a source of additional and unnecessary physical effort to maintain precise depth, which also increases stress.

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