This is the second level certification course for divers wishing to utilize a closed circuit rebreather (CCR) for air diving. The objective of the course is to train divers in the benefits, hazards and proper procedures for diving a CCR and to develop basic CCR diving skills to a maximum depth of 40 metres / 130 feet using an air diluent for formal decompression diving.
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Class Duration: Minimum of 6 hours academic development and 2 hours equipment maintenance workshop. The duration of the entire course must take a minimum of 5 days.
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Course Structure
Confined Water Execution
1. Minimum of 60 minutes confined water training to a maximum of 9 metres / 30 feet
Open Water Execution
1. Equipment configuration session, confined water session, and 50m fully-equipped CCR diver surface tow must be completed prior to
open water training dives
2. Minimum of 420 minutes open water training to be completed over a minimum of 7 dives with a gradual increase in depth each day to
a maximum of 40 metres / 130 feet
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Student Prerequisites
1. Minimum age 18
2. Provide proof of 50 logged dives. If completing a unit crossover, provide proof of 10 logged CCR dives in the last 12 months
3. Provide proof of TDI Advanced Nitrox Diver and Deco Procedures Diver or equivalent from agencies recognized by TDI
4. If the rebreather is a TDI approved sidemount rebreather, the student must hold the TDI Sidemount Diver certification or equivalent,
provide proof of 10 logged sidemount dives, and any additional requirements the sidemount rebreather manufacturer may have
OR
1. Minimum age 18
2. TDI Air Diluent CCR Diver certified or equivalent
3. Minimum of 30 hours and 30 dives on the specific CCR unit
4. Six months CCR diving experience
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Required Equipment: The following equipment is required for each student
1. A complete closed circuit rebreather. Any modifications to the unit must be approved by the manufacturer
2. Minimum of 1 CCR dive computer and 1 backup OC/CCR computer for bailout in event of system failure
3. Mask, fins and a suitable line-cutting device
4. Slate and pencil
5. Reel with a minimum of 50 metres / 165 feet of line
6. Lift Bag / Delayed Surface Marker Buoy (DSMB) with adequate lift and size for the dive environmentand a backup. Required for open
water environments only
7. Exposure suit appropriate for the open water environment where training will be conducted
8. Access to an oxygen analyzer
9. Appropriate weight
10. Bailout gas supply cylinder with a minimum capacity of 5.7 litres / 40 cuft air or nitrox may be used
Note: The instructor and any certified assistant will also carry a bailout gas supply during all open water sessions. This redundant gas source must be greater than the instructor and any certified assistant’s bailout requirements.
Total Cost: $1800 (Includes E-learring and certification card upon course completion; Does not including required gear)
Rental of a rebreather is available upon request.