CCR Full Cave

Are you a Closed Circuit Rebreather (CCR) diver who is a serious adventure seeker wishing to explore overhead environments? Sign up for the TDI Full Cave Diver Course!This course is the third stage of overhead environment training in the series of TDI’s Rebreather Full Cave Diver Development Program. Advanced rebreather cave dive planning, the practical execution of different types of cave systems and scenarios divers encounter are presented. This cave diving course is not intended to prepare divers for evaluating all facets of cave diving. The objective of this course is to expand and critique previous skills accomplished in the TDI Rebreather Cavern and Introductory Cave Diving Programs. Emphasis is placed upon dive planning, bailout range requirements, and skill perfection through actual cave penetration.

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What you can expect to learn

The TDI Rebreather Full Cave Diver Course takes an in-depth look at all of the following and more:

• Policies for rebreather cavern diving
• Psychological considerations
• Equipment considerations
  • Bailout cylinder options
  • Rebreather configuration options
  • Scrubber options
  • Buoyancy compensator device (BCD) / harness options
  • Reel options
  • Proper weighting
  • Equipment configurations
• Communication
  • Hand signals
  • Light signals
  • Touch contact signals
• Swimming techniques
  • Body posture / trim
  • Buoyancy control and rebreather weighting
  • Line following techniques
  • Propulsion techniques
• Physiology
  • Breathing techniques
  • Stress management
• Cave environment
  • Geology
  • Local access requirements
  • Land owner relations
• Conservation
• Problem solving
  • Equipment failure
  • Silting conditions
• Accident analysis
• Review of dive tables and decompression theory
• Cavern diving with Open Circuit (OC) divers
  • Bailout configuration requirements
  • Out of gas emergencies
• Cavern diving etiquette

Course Equipment Requirements

• A complete TDI approved rebreather
• Minimum of 1 rebreather enabled-computer or PO₂ monitoring device redundant off board
• Off board bailout cylinder(s) – volume appropriate for planned dive
• Bailout regulator(s) equipped with pressure gauge and low pressure off board (quick connect) gas supply hose
• Buoyancy compensator device (BCD) with power inflator
• Exposure suit adequate for diving environment
• Access to an oxygen analyzer (instructor may supply)
• Mask and fins
• Minimum of 2 cutting devices
• Slate and pencil
• Three battery powered lights; 1 primary and 2 back-ups, each with a with burn time suitable for the planned dive time
• Safety reel with a minimum of 37 metres / 125 feet of guideline
• Gap reel with 15 metres / 50 feet of guideline
• One primary cave-diving reel with a length appropriate for intended dive
• Computer, watch or bottom timer and depth gauge
• Slate or wet notes with a pencil
• Submersible dive tables or backup dive computer
• Three directional line arrows
• Three non-directional markers
• Any staged decompression cylinders must be properly labelled

Course Prerequisites

• Minimum age 18
• Certified TDI CCR Air Diluent Decompression Procedures Diver certification or equivalent
• Provide proof of a minimum of 50 logged dives and 50 hours on the rebreather unit used in training
• Provide proof of certification as a:
  • TDI Rebreather Introductory Cave Diver or equivalent