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This is a glossary of technical terms, jargon, diver slang and acronyms used in underwater diving. The definitions listed are in the context of underwater diving. There may be other meanings in other contexts. Underwater diving can be described as a human activity – intentional, purposive, conscious and subjectively meaningful sequence of ...
Recreational scuba diver The undersea kelp forest of Ana Capa off of the coast of Oxnard, California Diver looking at a shipwreck in the Caribbean Sea. Scuba diving is a mode of underwater diving whereby divers use breathing equipment that is completely independent of a surface breathing gas supply, and therefore has a limited but variable endurance. [1]
Other equipment includes a diving mask to improve underwater vision, a protective diving suit, equipment to control buoyancy, and equipment related to the specific circumstances and purpose of the dive. [50] Scuba divers are trained in the procedures and skills appropriate to their level of certification by instructors affiliated to the diver ...
A noise inside the diver's head associated wth nitrogen narcosis in very deep air dives. [43] wall diving. See: Underwater diving#Diving environment. Recreational scuba diving along the face of a near vertical cliff wall, particularly if the bottom is below the range of the diver's equipment and certification. This requires good buoyancy ...
The common term for a place at which one may dive is a dive site (from "dive" and "site", meaning "the place, scene, or point of an occurrence or event". [64]) As a general rule, professional diving is done where the work needs to be done, and recreational diving is done where conditions are suitable.
The level 1 "Supervised Diver" has sufficient knowledge, skill and experience to dive, in open water, to a recommended maximum depth of 12 m, which do not require in-water decompression stops, under the direct supervision of a dive leader, in groups of up to four level 1 scuba divers per dive leader provided the dive leader is capable of ...
Navigation is a common activity during dives. Diver navigation, termed "underwater navigation" by scuba divers, [16] is a set of techniques—including observing natural features, the use of a compass, and surface observations—that divers use to navigate underwater.
The level 2 "Autonomous diver" has sufficient knowledge, skill and experience to make dives, in open water, which do not require in-water decompression stops, to a recommended maximum depth of 20 m with other scuba divers of the same level, only when appropriate support is available at the surface, and under conditions that are equal or better ...