The Mixed Gas CCR (TDI MOD 2) program teaches experienced divers how to use helium-based mixed gas to better control the effects of nitrogen narcosis.The training develops advanced CCR skills for technical diving to depths of up to 60 meters / 200 feet, with an emphasis on safe operation, gas management, and optimal use of the rebreather system.
Speed up the course timing by completing learning components online with the SDI e-learning program