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Controlled emergency swimming ascent is a technique used by scuba divers as an emergency procedure when a diver has run out of breathing gas in shallow water and must return to the surface. [3] During the ascent, the diver propels him/herself towards the surface at a safe ascent rate by means of swimming, usually finning, with continuous exhalation at a rate unlikely to cause injury to the diver by lung overexpansion, and remains under control. Verdier, C.; Lee, D. A. (2008). "Motor skills learning and current bailout procedures in recreational rebreather diving". In: Verdier (Ed). Nitrox Rebreather Diving. DIRrebreather Publishing. ISBN 978-2-9530935-0-6. Archived from the original on September 18, 2008 . Retrieved 7 January 2016. {{ cite journal}}: CS1 maint: unfit URL ( link) The standard PADI-trained technique is for the rescuer to approach the face-down unconscious diver (victim) from above and kneel with one knee either side of their diving cylinder. Then, with the victim's diving regulator held in place, [8] the tank is gripped firmly between the knees and the rescuer's buoyancy compensator is used to control a slow ascent to the surface. This method may not work with sidemount or twin cylinder sets, and puts both rescuer and victim at increased risk if the rescuer loses grip, as the victim will sink and the rescuer may make an excessively fast uncontrolled ascent.

Divers should be taught to agree on emergency procedures before the dive when intending to dive together. If the diver is not carrying a bailout cylinder, and another diver is in the immediate vicinity, the diver may request gas from the other diver.ISO 24801 Recreational diving services — Requirements for the training of recreational scuba divers If you want to know where are Glory Holes in Adelaide and you want to practice sex anonymously and respectfully, here you can find and share places such as public baths, videobooths, sex clubs, sex shops and X rooms, where you will find Glory Holes in Adelaide, South Australia.

With expert hair extension application and positioning, the client is still able to tie their hair up without showing the tapes. Tape hair extensions lay very flat and virtually disappear into the natural hair, hence the reason they’re known as the ‘invisible’ hair extension method. Inability to read instruments due to damage or loss of mask or severe damage to helmet faceplate. It may not be possible to accurately monitor depth, rate of ascent or decompression stops. This can be mitigated if a dive buddy can monitor control the ascent, or if the diver's computer has audible alarms for fast ascent and exceeding a ceiling. Ascent on a tangible reference such as a DSMB line, shotline or anchor line is also helpful. The final option is a buoyant ascent, where buoyancy is gained by inflation of the buoyancy compensator (not always possible in an out-of-air emergency), and dropping of weights. This is recommended as a last resort where the diver is unsure of making it to the surface by swimming, as it will ensure that an unconscious diver will rise to the surface rather than sink.

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The only reference to emergency ascent training in the CMAS Diver Training Program (CMAS TC Version 9/2002) is in the 1-star course where Controlled buoyancy lift of victim to surface is specified under practical training of rescue skills. If a bailout cylinder is carried, the diver switches to personal bailout gas and makes a normal ascent.

Smart, Michael (2011). Into the Lion's Mouth: The Story of the Wildrake Diving Accident. Medford, Oregon: Lion's Mouth Publishing. pp.34–35, 103–105, 148, 182–206. ISBN 978-0-615-52838-0. LCCN 2011915008.The diver should not waste time while making the choice of which emergency ascent procedure to use. A controlled swimming ascent is the most recommended default for recreational diving. Divers who venture beyond the safe zone for controlled swimming ascent should be prepared for their most appropriate option at all times. [3] Staff (4 March 2014). "CMAS Self-Rescue Diver". Standard Number: 2.B.31 / BOD no 181 ( 04-18-2013 ). CMAS . Retrieved 13 April 2017. Failure of a rebreather requiring bailout to open circuit – This is not always considered an emergency ascent, though it is usually urgent, and is considered a sufficient reason to abort the dive. Buddy breathing by two divers on a single second stage is specified as the least desirable of the dependent options.

Inch Disco Ball Foil Balloons 5 pcs Retro Bachelorette Party Decorations Last Disco Decades Birthday Party Groovy 70s Bach to the 90s 80s Blow and go is a free ascent where the diver exhales at the bottom before starting the ascent. The breath may be held during part of the ascent, as the lungs are emptied before starting. This procedure is considered unnecessarily hazardous by many recreational training agencies. [3] An emergency ascent usually implies that the diver initiated the ascent voluntarily, and made the choice of the procedure. Ascents that are involuntary or get out of control unintentionally are more accurately classed as accidents. Reserve air ascent [3] is an ascent using a bailout cylinder or the gas in the main cylinder after actuating a reserve valve to release the gas trapped by the reserve valve mechanism. A reserve air ascent is not traditionally considered an emergency ascent, as it was the standard procedure before the use of submersible pressure gauges became widespread.An ascent where the diver is pulled to the surface by the line tender, either as a response to an emergency signal from the diver, or a failure to respond to signals from the surface. A diver may also be assisted in the ascent by the line tender in a normal ascent, particularly divers in standard dress, where it was often the normal operating procedure. Knight, J (1978). "Free Ascent Training". South Pacific Underwater Medicine Society Journal. 8 (2). ISSN 0813-1988. OCLC 16986801. Archived from the original on April 15, 2013 . Retrieved 2008-08-07. {{ cite journal}}: CS1 maint: unfit URL ( link)