New Divers

Learn the right procedures to dive safely with the most advanced equipment for diving. From the basic skills all the way to the more complex CCR decompression diving, in a relaxed environment adapted to your learning speed and progression, without pressure.

Certified CCR Divers

If you already are a CCR diver, and you want to continue pushing your limits, improve your skills or simply to learn from the best, we offer different levels starting from the open ocean all the way to the deep underwater caves.

Theory

• History and Evolution of Rebreathers.
• Comparison of Open Circuit, Closed Circuit and Semi Closed Circuit Rebreather Systems.
• Practical Mechanics of the System.
• Gas Physiology.
• Proper Scrubber Packing; according to the manufacturer’s recommendation.
• Electronic or Manual Systems Design and Maintenance.
• Dive Tables.
• Dive Computers.
• Dive Planning
• Emergency Procedures.
  
  

Skills

• Build unit based on manufacturer’s specifications using manufacturer’s manual/build checklist.
• Pre-dive checks.
• Verify diluent and oxygen (O₂) cylinder contents using O₂ analyzer where appropriate.
• Demonstrate correct pre-dive planning procedures.
• Emergency procedures.
• Use of BCD/suit and effective management of loop breathing volume for buoyancy control.
• Stop at 3-6 meters / 10 – 20 feet on descent for leak bubble check.
• Electronics systems monitoring for PO₂ levels (SETPOINT) and switching setpoints.
• Manual control of setpoint if electronically controlled CCR is not used.
• Use and adjustment of Heads Up Displays and computers.
• Mask removal and replacement.
• Use of lift bag / delayed surface marker buoy and reel (where relevant and applicable).
• Proper execution of the dive within all pre-determined dive limits.
• Demonstration of safety stops at pre-determined depths.
• Constant loop volume management.
• Cell validation checks with appropriate use of diluent and oxygen.
• Post dive clean of unit.
• Diver maintenance of unit.
  

Requirements

• Minimum age: 18 years old.
•  Provide proof of 20 logged open water dives.If completing a unit crossover, at least 10 logged CCR dives in the last 12 months.
• Provide proof as a TDI Nitrox Diver or equivalent.
• Provide proof of 10 recorded side-mount dives and any additional requirements the side-mount rebreather manufacturer may have.
• 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.
  
• Note: Nitrox diver and/or Advanced Nitrox diver may be combined with this course.
  

Theory

• History and Evolution of Rebreathers.
• Comparison of Open Circuit, Closed Circuit and Semi Closed Circuit Rebreather Systems.
• Practical Mechanics of the System.
• Gas Physiology.
• Proper Scrubber Packing; according to the manufacturer’s recommendation.
• Electronic or Manual Systems Design and Maintenance.
• Dive Tables.
• Dive Computers.
• Dive Planning
• Emergency Procedures.
  
  

Skills

• Build unit based on manufacturer’s specifications using manufacturer’s manual/build checklist
• Pre-dive checks.
• Verify diluent and O₂ cylinder contents using O₂ analyzer.
• Demonstrate correct pre-dive planning procedures.
• Emergency procedures.
• Use of BCD/suit and effective management of loop breathing volume for buoyancy control.
• Stop at 3-6 meters / 10 – 20 feet on descent for leak bubble check.
• Electronics systems monitoring for PO₂ levels (SETPOINT) and switching setpoints.
• Manual control of setpoint if electronically controlled CCR is not used.
• Use and adjustment of Heads Up Displays and computers.
• Mask removal and replacement.
• Use of lift bag / delayed surface marker buoy and reel.
• Proper execution of the dive within all pre-determined dive limits.
• Constant loop volume management.
• Cell validation checks with appropriate use of diluent and oxygen.
• Post dive clean of unit.
  

Requirements

• Minimum age: 18 years old.
• Provide proof of 50 logged dives. If completing a unit crossover, at least 10 logged CCR dives in the last 12 months.
• Provide proof of TDI Advanced Nitrox Diver and Deco Procedures Diver or equivalent from agencies recognized by TDI.
• 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.
  

Theory

• History and Evolution of Rebreathers.
• Comparison of Open Circuit, Closed Circuit and Semi Closed Circuit Rebreather Systems.
• Practical Mechanics of the System.
• Gas Physiology.
• Proper Scrubber Packing; according to the manufacturer’s recommendation.
• Electronic or Manual Systems Design and Maintenance.
• Dive Tables.
• Dive Computers.
• Dive Planning
• Emergency procedures.
• Helium Considerations.

Skills

• Build unit based on manufacturer’s specifications using manufacturer’s manual/build checklist
• Pre-dive checks.
• Verify diluent and O₂ cylinder contents using O₂ analyzer.
• Demonstrate correct pre-dive planning procedures.
• Emergency procedures.
• Use of BCD/suit and effective management of loop breathing volume for buoyancy control.
• Stop at 3-6 meters / 10 – 20 feet on descent for leak bubble check.
• Electronics systems monitoring for PO₂ levels (SETPOINT) and switching setpoints.
• Manual control of setpoint if electronically controlled CCR is not used.
• Use and adjustment of Heads Up Displays and computers.
• Mask removal and replacement.
• Use of lift bag / delayed surface marker buoy and reel.
• Proper execution of the dive within all pre-determined dive limits.
• Constant loop volume management.
• Cell validation checks with appropriate use of diluent and oxygen.
• Post dive clean of unit to avoid contamination and spread of disease.

Requirements

• Minimum age: 18 years old.
• Provide proof of 50 logged dives. If completing a unit crossover, provide proof of 10 logged CCR dives in the last 12 months.
• Minimum certification level of TDI Advanced Nitrox Diver, Deco Procedures Diver or Helitrox diver or equivalent from agencies recognized by TDI.
• 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.

Theory

• History and Evolution of Rebreathers.
• Comparison of Open Circuit, Closed Circuit and Semi Closed Circuit Rebreather Systems.
• Practical Mechanics of the System.
• Gas Physiology.
• Proper Scrubber Packing; according to the manufacturer’s recommendation.
• Electronic or Manual Systems Design and Maintenance.
• Dive Tables.
• Dive Computers.
• Dive Planning
• Emergency procedures.
• Helium Considerations.

Skills

• Build unit based on manufacturer’s specifications using manufacturer’s manual/build checklist.
• Demonstrate familiarity with basic and intermediate hand signals.
• Select and prepare equipment suitable for soft overhead environment with long decompression obligations.
• Conduct team-oriented drills for lift bag deployment and bailout procedures.
• Drills for buddy rescue.
• Properly analyze all gas mixtures to be used.
• Conduct pre-dive checks using TDI Pre-flight checklist.
• Use START* before every dive.
• Stress analysis and mitigation.
• Show good awareness of team members through communications, proximity and team-oriented dive practices.
• Demonstrate buoyancy control; ability to hover at fixed position in water column without moving hands or feet.
• Mask removal and replacement, deploy backup mask.
• Properly execute a recovery from a system failure and conclude the dive and decompression on open circuit gases carried from a depth greater than 30 metres/100 feet.
• Demonstrate ability to plug in and share off-board gas, including sharing/swapping of off-board bailout cylinders.
• Properly execute a recovery from system failure and conclude the dive and decompression with the unit in manual mode.
• Gas shutdowns and loss of gas, correct choice and switching to off board gases.
• Broken hoses, catastrophic failure scenarios.
• Flooded absorbent canister.
• Cell errors.
• SCR drill (minimum of 10 minutes).
• Oxygen rebreather mode in depths less than 6 meters / 20 feet.
• Stop at 3 to 6 meters / 10 to 20 feet on descent for leak bubble check.
• Demonstrate competence managing 2 bailout cylinders, including drop and recovery while maintaining position in the water column.
• Deployment of a lift bag / delayed surface marker buoy (DSMB) at depth and mid water.
• Simulate failed lift bag / DSMB deployment.
• On 2 of the dives, demonstrate an ascent with ascent reel and lift bag and perform staged decompression.
• Electronics systems monitoring for PPO₂ levels.
• Cell validation checks with appropriate use of diluent and oxygen.
• Proper execution of the dive within all pre-determined dive limits.
• Demonstration of decompression stops at pre-determined depths.
• Demonstrate controlled ascent with simulated toxed diver including surface tow at least 50 meters / 165 feet with equipment removal on surface, in water too deep to stand in.
  
  

Requirements

• Minimum age: 18 years old.
• Provide a verified log of a minimum of 50 rebreather hours distributed over a minimum of 50 dives on the specific rebreather. Valid logged dives must be deeper than 9 meters / 20 feet, at least 20 must be deeper than 30 meters / 100 feet, and at least 10 dives requiring staged decompression.
  
  
• If the diver has 50 hours on another CCR unit recognized by TDI, only 25 hours/25 dives are required to be on the specific unit.
• If completing a unit crossover, provide proof of at least 10 logged CCR dives in the last 12 months.
• Having TDI Air Diluent Decompression Procedures Rebreather / TDI CCR Helitrox Diluent Decompression Procedures Diver certification or equivalent from agencies recognized by TDI.
  

Theory

• Gas Physiology.
• Formula Work.
• Dive Tables.
• Dive Computers.
• Decompression in a CCR.
• Dive Planning
• Unit-specific checklist.
• Equipment maintenance.
• Loop configuration.
• Additional fitted equipment and modifications.
• Emergency Procedures.
  
  

Skills

• Build unit based on manufacturer’s specifications using manufacturer’s manual/build checklist.
• Demonstrate familiarity with basic and intermediate hand signals.
• Select and prepare equipment suitable for soft overhead environment with long decompression obligations.
• Conduct team-oriented drills for lift bag deployment and bailout procedures.
• Drills for buddy rescue.
• Properly analyze all gas mixtures to be used.
• Demonstrate adequate pre-dive planning.
• Conduct pre-dive checks using TDI Pre-flight checklist.
• Use START* before every dive.
• Stress analysis and mitigation.
• Show good awareness of team members through communications, proximity and team-oriented dive practices.
• Demonstrate buoyancy control; ability to hover at fixed position in water column without moving hands or feet.
• Mask removal and replacement, deploy backup mask.
• Properly execute a recovery from system failure and conclude the dive and decompression with the unit in manual mode.
• Demonstrate ability to plug in and share off-board gas, including sharing/swapping of off-board bailout cylinders.
• Properly execute a recovery from system failure and conclude the dive and decompression with the unit in manual mode.
• Gas shutdowns and loss of gas, correct choice and switching to off board gases.
• Broken hoses, catastrophic failure scenarios.
• Flooded absorbent canister.
• Cell errors.
• SCR drill (minimum of 10 minutes).
• Oxygen rebreather mode in depths less than 6 meters / 20 feet.
• Stop at 3 to 6 meters / 10 to 20 feet on descent for leak bubble check.
• Demonstrate competence managing 2 bailout cylinders, including drop and recovery, while maintaining position in the water column.
• Deployment of a lift bag / delayed surface marker buoy (DSMB) at depth and mid-water.
• Simulate failed lift bag / DSMB deployment.
• On 2 of the dives, demonstrate an ascent with ascent reel and lift bag and perform staged decompression.
• Electronics systems monitoring for PPO₂ levels.
• Cell validation checks with appropriate use of diluent and oxygen.
• Proper execution of the dive within all pre-determined dive limits.
• Demonstration of decompression stops at pre-determined depths.
• Demonstrate controlled ascent with simulated toxed diver including surface tow at least 50 meters / 165 feet with equipment removal on surface, in water too deep to stand in.
  
  

Requirements

• Minimum age: 18 years old.
• Certified TDI CCR Mixed Gas Diluent diver, or equivalent from agencies recognized by TDI.
• Have a verified log of a minimum of 100 hours as a certified CCR diver over a minimum of 100 dives; a minimum of 50 hours and 50 dives must be on the unit specific CCR. 
• Fifty percent of these dives must be deeper than 30 meters / 100 feet and a minimum of 20 logged CCR dives requiring staged decompression. All dives to be deeper than 9 meters / 20 feet.