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The hand signal "OK" Diver communications are the methods used by divers to communicate with each other or with surface members of the dive team. In professional diving, diver communication is usually between a single working diver and the diving supervisor at the surface control point.
In the communication used by scuba divers, the OK sign is specific in its meaning that "everything is OK" as regulated by the Recreational Scuba Training Council. Divers are taught to always use this sign and not the thumbs up gesture because the latter means that a diver needs to ascend. [ 12 ]
In an effort to insure universal, easily understood signals between divers, [35] the Recreational Scuba Training Council agencies together defined a set of hand signals intended for universal use, which are taught to diving students early in their entry-level diving courses. [34] Hand signals may also have more than one variation that may ...
Hand signal to ascend Hand signal to ascend to the next stop depth Divers ascending at shotline Four stages of scuba ascent with delayed surface marker buoy: Preparation, deployment, ascent, decompression stop. Three stages can be distinguished in the procedure for a controlled ascent.
Communication is central to buddy and team diving. DIR divers must be competent at underwater communication by hand signals and light signals, and to use them to ensure that they are always aware of the status of the rest of the team. DIR divers have an extended range of hand signals, some particularly relevant to overhead and decompression diving.
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 ...
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Diver voice communication equipment does not work with a standard scuba demand valve mouthpiece, so scuba divers generally use hand signals are when visibility allows, and there are a range of commonly used signals, with some variations. [85] These signals are often also used by professional divers to communicate with other divers. [86]