TDI Semi Closed Rebreather Manual for Scuba Diving

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The TDI Semi-closed rebreather manual will give an understanding of how gas is consumed and reused. The manual also gives some emergency procedures and nitrox review formulas. Diving the Drager Atlantis, Dolphin, Ray & OMG/San-O-Sub Azimuth. This material contained within this manual is designed to be used to supplement classroom instruction by an insured certified TDI Semi-Closed Rebreather Instructor.