5 days                          8 dives                         $1500

The class covers the necessary skills you’ll need to plan and execute decompression dives to a maximum depth of 45m/150ft using air diluent..

This course is designed for open circuit technical divers who want to dive CCR, or for CCR Air Diluent divers looking to extend their depth limits and bottom times.

Course prerequisites:

Advanced Nitrox and Decompression Procedures diver certification, with 50 logged dives, minimum age 18


Air Diluent CCR diver, with 30 hours on the unit and 6 months CCR diving experience, minimum age 18

What will I learn?

Over a minimum of 8 dives and several theory sessions you’ll cover

  • History and evolution of rebreathers
  • Practical mechanics of the system – unit build up, breakdown and scrubber packing, post dive cleaning and maintenance
  • Gas physiology
  • Electronic and manual systems design and maintenance
  • Dive Planning
  • Emergency procedures
  • Dive checklists
  • Predive checks
  • In water skills – including diluent flushes, bailout, buoyancy management and trim, deploy SMB, monitor/switching oxygen levels (set point), management of loop volume, bailing out at depth
  • In water emergency procedures – including loss of gas/gas shutdowns, flooded canister, flooded loop, broken hoses,CO2 breakthrough, high O2/low O2, electronics/battery failure, buddy breathing deco gas