A bailout bottle (BoB) or, more formally, bailout cylinder is a scuba cylinder carried by an underwater diver for use as an emergency supply of breathing gas in the event of a primary gas supply failure. A bailout cylinder may be carried by a scuba diver in addition to the primary scuba set, or by a surface supplied diver using either free-flow or demand systems.[1] The bailout gas is not intended for use during the dive except in an emergency, and would be considered a fully redundant breathing gas supply if used correctly. The term may refer to just the cylinder, or the bailout set or emergency gas supply (EGS), which is the cylinder with the gas delivery system attached. The bailout set or bailout system is the combination of the emergency gas cylinder with the gas delivery system to the diver, which includes a diving regulator with either a demand valve, a bailout block, or a bailout valve (BOV).
In solo diving, a buddy bottle is a bailout cylinder carried as a substitute for an emergency gas supply from a diving buddy. A bailout cylinder for recreational scuba diving is often a small cylinder, known as a pony bottle, with a normal scuba regulator set, or a smaller cylinder with a combined first and second stage integrated with the cylinder valve, known as "Soare air", after a well known example
of the type.
Rebreathers also have bailout systems, often including an open-circuit bailout bottle.[2][3]
^Cite error: The named reference Commercial diving manual was invoked but never defined (see the help page).
^Cite error: The named reference Powell 2013 was invoked but never defined (see the help page).
^Cite error: The named reference inspo bailout was invoked but never defined (see the help page).
A bailoutbottle (BoB) or, more formally, bailout cylinder is a scuba cylinder carried by an underwater diver for use as an emergency supply of breathing...
air source or bailoutbottle to allow a normal ascent in place of a controlled emergency swimming ascent. The key attribute of a pony bottle is that it is...
emergency. Examples include an auxiliary demand valve, a pony bottle and bailoutbottle. An alternative air source may be fully redundant (completely...
generally used for scuba applications, but are also occasionally used for bailout systems for surface-supplied diving. Gas reclaim systems used for deep...
above atmospheric pressure. High-pressure gas cylinders are also called bottles. Inside the cylinder the stored contents may be in a state of compressed...
surface supplied diving or scuba, it may be referred to as a bailout cylinder or bailoutbottle. It may also be used for surface-supplied diving or as decompression...
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