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Scuba gas planning is the aspect of dive planning which deals with the calculation or estimation of the amounts and mixtures of gases to be used for a planned dive profile, and can be critical to the safety of the dive. The scuba diver by definition is independent of surface supply and, in general, must carry all gas needed for the dive, though ...
A fourth, logistical reason, is availability of cylinders of suitable capacity. The largest capacity cylinders in general use for scuba diving are 18 litre 232 bar steel cylinders, and they are relatively uncommon. Multiple cylinders may be chosen simply to provide sufficient capacity for the planned profile and specific gas.
Buddy checks may be extended to include aspects of dive planning, to ensure that the divers are agreed on the intended activity and contingency plans. When larger groups and more complex dive plans are involved this would be considered part of the dive briefing. Risk assessment update; Emergency plans; Contingency plans
The dive plan must be understood and followed, and contingency plans should be available for the foreseeable deviations from the plan. [ 30 ] DIR divers must be completely dedicated to the buddy system, primarily in the interest of safety, but also because failure to follow the expected procedures is likely to compromise the dive plan.
Cave diving – Diving in water-filled caves; Dive planning – The process of planning an underwater diving operation; Half + 15 bar – Rule of thumb for scuba gas management; Penetration diving – Diving under a physical barrier to a direct vertical ascent to the surface; Scuba gas management – Logistical aspects of scuba breathing gas
Decompression in the context of diving derives from the reduction in ambient pressure experienced by the diver during the ascent at the end of a dive or hyperbaric exposure and refers to both the reduction in pressure and the process of allowing dissolved inert gases to be eliminated from the tissues during this reduction in pressure.
A Navy buddy diver team checking their gauges together. Buddy diving is the use of the buddy system by scuba divers and freedivers.It is a set of safety procedures intended to improve the chances of avoiding or surviving accidents in or under water by having divers dive in a group of two or sometimes three.
Professional diving teams are required to have emergency plans in place during all operations, and recreational divers are also expected to do so, to the extent appropriate to the dive plan. An alternative meaning, in the context of medicine, is a medical emergency which was initiated while diving, which may also be described as a diving ...