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Classes of underwater breathing apparatus
Apr 08, 2018

Classes of underwater breathing apparatus

  • Surface supplied diving[1] - mostly used in professional diving. This category includes:

  • Scuba diving - The use of self-contained underwater breathing apparatus. This category includes:

  • Free diving or breathhold diving, where the diver completes the dive on a single breath of air taken at the surface before the dive.

    • Snorkel allows breathing at the surface with the face submerged, and is used as an adjunct to free diving and scuba.

  • Atmospheric diving suits and other submersibles which isolate the diver from the ambient environment. These are not considered here.

  • Liquid breathing systems are extremely rare and at an early experimental stage. It is hoped that some day practical systems will allow very deep diving. This is not considered here.

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