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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 ...
The emergency plan, (or emergency action plan), should be specific to the dive plan where applicable, as specific actions should be detailed where possible and depend on the circumstances of the dive plan. As much detail as reasonably practicable can save time during an emergency, when it avoids the need to make detailed plans at the time.
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.
The dive plan must be understood and followed, and contingency plans should be available for the foreseeable deviations from the plan. [ 32 ] 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.
On a recent scuba diving trip to Fiji, I traveled with both of my teens. We all went scuba diving in the morning — my favorite activity because it's done together, but there's no fighting since ...
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
A dive briefing or pre-dive briefing is a meeting of the diving team or dive group before the dive to allow the instructor, supervisor, dive leader or dive boat skipper to inform the attendees of the dive plan, contingency plans and emergency plans for the dive. The amount of detail presented should be appropriate to the dive, but there are ...
Cave diving, wreck diving, ice diving and diving inside or under other natural or artificial underwater structures or enclosures are examples. The restriction on direct ascent increases the risk of diving under an overhead, and this is usually addressed by adaptations of procedures and use of equipment such as redundant breathing gas sources ...