SCUBA - Self-Contained Underwater Breathing Apparatus 23
SCUBA - Self-Contained Underwater Breathing Apparatus 23 :
Effects of Breathing High Pressure Gas: (7) Diving Longer and Deeper Safely:There are a number of techniques to increase the diver's ability to dive deeper and longer: Technical diving – diving deeper than 40 metres (130 ft), using mixed gases, and/or entering overhead environments (caves or wrecks). Surface supplied diving – use of umbilical gas supply and diving helmets. Saturation diving – long-term use of underwater habitats under pressure and a gradual release of pressure over several days in a decompression chamber at the end of a dive
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