Who this course is for:
  • The TDI Extended Range or Trimix Diver looking to:

    • Extend their depth range

    • Advance their technical diving education


Course prerequisites:
  • Minimum age 18

  • Minimum certification of TDI Extended Range or Trimix Diver or equivalent

  • Show proof of 100 logged dives, 25 must be deeper than 30metres/100feet



What you can expect to learn:
  • Advanced decompression dive planning including:

    • Gas planning based on equivalent narcotic depths, nitrogen and helium absorption and elimination, CNS and OTU limits, isobaric counter diffusion, volume requirements, etc.

    • Use of hypoxic gasses

    • HPNS and isobaric counter diffusion

    • Decompression gas choices

    • Tables vs. personal dive computers

    • Emergency and contingency planning (equipment failure, omitted decompression, etc.)

  • Decompression diving procedures

    • Equipment selection

    • Pre-dive checks and drills

    • Stress analysis and mitigation

    • Following a decompression schedule

    • Gas switching

    • Team awareness and communication

    • SMB/lift bag deployment

  • Proper trim, buoyancy and fining techniques

  • Management of multiple (minimum of 3) decompression/stage cylinders

  • Emergency procedures (equipment failures, catastrophic gas loss, omitted decompression, navigational errors, injured/unconscious diver, etc)

  • Equipment considerations, cylinder labeling, analyzing trimix nitrox and mixes, and gas blending procedures



What’s in it for you?
  • Ability to conduct technical diving activities using custom trimix mixtures without direct supervision, so long as the following limits are adhered to:

    • The diving activities approximate those of training

    • The areas of activities approximate those of training

    • Environmental conditions approximate those of training


TDI Advanced Trimix minimum requirements:
  • Satisfactorily complete the TDI Advanced Trimix course written examination with a passing score of 80%, followed by 100% remediation by the instructor

  • Complete all open water requirements safely and efficiently

  • Demonstrate mature, sound judgment concerning dive planning and execution

What it includes: 

  • All gas fills needed for the course

  • All training materials required for the course

  • Certification Fees

  • Any site entrance fees 



Duration: 3 Days
Cost: $899
Combine this course with:
Nitrox gas blender
Oxygen Service Technician
Add: $249
Save $148
Add: $249
Save $148

© 2017 Reef2Ridge pty ltd

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