What scuba equipment can SSI Decompression Diving students use?

The use of a single back-mounted cylinder in conjunction with a stage cylinder is optimal for SSI Decompression Diving students because it allows for the necessary gas mixes and redundancy required during decompression diving. This configuration provides the primary air supply from the back-mounted cylinder while also allowing divers to carry additional gas in the stage cylinder, which might be necessary for managing deeper dives or extended bottom times.

Using a stage cylinder offers flexibility in the dive profile, enabling the diver to switch gas compositions as needed for different depths. This is crucial for maintaining safety and minimizing the risks associated with decompression sickness. The combination of a single back-mounted cylinder and a stage cylinder thus ensures that divers have enough gas for both their ascent and decompression stops while adhering to the principles of safe decompression diving practices.