CCR Mixed Gas Diver

General Information

As a CCR Air Diluent Diver, the Mixed Gas CCR Diver course is your next step into closed circuit rebreather diving, it is your opportunity to explore a little deeper. Using the latest in technology CCR's maximize your gas supply and provide the optimum breathing gas for any depth by maintaining a constant partial pressure of oxygen (PPO2). During the dives your Instructor will teach you all the necessary skills to conduct CCR dives utilizing helium as a diluent gas and oxygen levels as low as 16 percent to a maximum depth of 60 meters.

There are two options for this course:

• Option A: CCR II Extended Range (Air) Diver — Decompression diving with air as diluent gas to a maximum depth of 50m.
• Option B: CCR II Extended Range (Normoxic Trimix) Diver — Decompression diving with air and normoxic Trimix as diluent gas to maximum depths of 50m and 60m respectively.

What Qualifications Do I Need?

• The CCR Air Diluent qualification or equivalent and must have 50 logged hours on the unit over a minimum of 50 dives.
• The minimum age of enrolment on this programme is 18yrs.
• You will need to fill out a self-certification medical statement.
• If you have any medical conditions you think may prevent you from scuba diving, please feel free to contact us and we will try to be of assistance.

What Makes A Class Different?

• More knowledge!
• More Practical Skills & Emergency Drills
• Focus on have better, more comfortable and safer divers

Course Duration

• Option A: CCR II Extended Range (Air) Diver — no less than 180 minutes in water training during 3 days in 4 dives.
• Option B: CCR Mixed Gas (Normoxic Trimix) Diver — no less than 300 minutes in water training during 5 days in 6 dives (2-4 of which are normoxic Trimix).

What's In The Course?

The CCR Mixed Gas Diver course takes an in-depth look at all the following and more:

Option A: CCR II Extended Range (Air) Diver

• All theoretical and practical aspects of air diluent decompression diving.
• Physical and physiological hazards of air diluent diving
• Decompression planning and equipment considerations for decompression diving and all procedures involved.
• Dive planning using the integral software as well as computer-based dive tables and software.

Option B: CCR Mixed Gas (Normoxic Trimix) Diver

• This covers all aspects of option A with additional normoxic Trimix theory

Practice In Water

A water session demonstrating all skills must be completed to the instructor's satisfaction prior to conducting any open water dives.

• Full manual operation dive.
• Simulate solenoid failures.
• Simulate manual gas control with valve shutdowns.
• Deploy SMB in less than 1½ minute.
• Practice removing and replacing a stage cylinder, both at rest and while swimming.
• Have divers simulate bailout and have reached 50% of bailout gas switch cylinders.
• Simulating an out-of-gas situation (without breathing, and exhaling slowly).
• Bailout from a depth greater than 160 fsw (48 msw) and ascent for 33 fsw (10 msw) and check how much gas was used and time - post dive use this value to determine bailout needs at depth.
• Perform SCR bailout for at least 10 minutes on a dive
• Remove the harness and cylinders from a simulated unconsciousness diver in less than 2 minutes.
• Complete all Water skills listed under the CCR diver Standards.
• Demonstrate an ability to respond to a single-bladder BCD failure.
• and more ...