TDI Air Diluent CCR Diver Course The TDI Closed Circuit Rebreather (CCR) Air Diluent Diver Course is your first step into closed circuit rebreather diving and your first truly quiet dive experience. It’s like having a nitrox blending machine on your chest. During this course you will be taught all of the necessary skills to […]

From the TDI Website: What’s in it for you? Upon successful completion of this course, graduates may engage in cavern diving activities without direct supervision so long as the following limits are adhered to: The diving activities approximate those of training Planned dives do not exceed diver’s current certification level Penetration is limited to the […]