Multi Stage Cave


This course is designed to teach trained cave divers how to extend bottom times and/or penetration distance through the use of stage cylinders. Divers will learn to plan dives that may incorporate longer bottom times, complex dive planning, and multiple methods of gas management. With respect to depth, gas mixes, and required decompression, course dives will not exceed the student’s current level of certification and experience level. 

Course Structure 

Open Water execution 

1. Students must complete 3 stage cave dives with a minimum accumulated bottom time of 90 minutes utilizing two different cave entrances. 

 Required Equipment 

The following equipment is required for each student: 

1. Dual cylinders, volume appropriate for planned dive, student gas consumption 

2. Two independent first and second stage regulators; one regulator equipped with a long hose at a recommended minimum length, 2 metres / 7 feet 

3. Submersible pressure gauge 

4. Stage cylinder(s), volume appropriate for planned dive, student gas consumption 

5. Stage regulator(s) including first and second stage and submersible pressure gauge 

6. Buoyancy compensator device (BCD) with power inflator 

7. Exposure suit adequate for diving environment 

8. Mask and fins, NO snorkel 

9. Two line cutting devices  

10. Three battery powered lights; 1 primary and 2 back-ups, each with a with burn time suitable for the planned dive time. 

11. One primary cave-diving reel with length appropriate for intended dive 

12. Safety reel with a minimum of 37 metres / 125 feet of guideline 

13. Appropriate number of gap and jump reels with 15 metres / 50 feet of guideline 

14. Computer, watch or bottom timer and depth gauge 

15. Slate or wet notes with a pencil 

16. Submersible dive tables or back up dive computer 

17. Three directional line arrows 

18. One non-directional line marker

Student Prerequisites 

1. Minimum age 18 

2. Certified as a TDI Full Cave Diver or equivalent 

© Aquatech Productions 2013