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Decompression Procedures

Decompression Procedures

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The TDI Decompression Procedures Course prepares you for planned staged decompression diving. With a maximum operating depth of 45 metres/150 feet, this course is your first step beyond the normal sport diving limits. The TDI Decompression Procedures Course combined with the TDI Advanced Nitrox course form the foundation of all other technical courses. After these two courses and some additional experience, the stage has been set for you to move onto additional technical levels.

Who this course is for

  • The certified Advanced Diver looking to expand their knowledge of decompression theory and diving techniques
  • The certified Advanced Diver who is interested in extending their bottom time
  • The certified Advanced Diver who has interest in moving forward with technical diving education

Course prerequisites

  • Minimum age 18
  • Minimum certification of SDI Advanced Adventure Diver, Advanced Diver, or equivalent
  • Proof of 25 logged open water dives

Equipment requirements

  • Primary cylinder
  • Decompression mix cylinder(s)
    • Cylinder volume appropriate for the planned dive & student gas consumption with submersible pressure gauge
    • Labelled in accordance with TDI standards
  • Regulators
    • Primary & alternate second stage required on all primary cylinders
    • Submersible pressure gauge required on all primary cylinders
  • Depth gauge and automatic bottom timer or dive computer
  • Buoyancy compensator appropriate for equipment configuration
  • Ascent reel with lift bag/surface marker buoy
    • Appropriate for maximum planed depth
    • Lift bag with at least 25 lbs of lift
  • Exposure protection appropriate for local diving condition
  • Slates/wet notes
  • Jon-line and other rigging lines as dictated by site conditions
  • Access to an oxygen analyzer
  • Other equipment requirements may apply, check with instructor

What you can expect to learn

  • Decompression dive planning
  • Decompression diving procedures
  • Proper trim, buoyancy and finning techniques
  • Emergency procedures
  • Equipment considerations, cylinder labeling, analyzing nitrox mixtures, and gas blending procedures

What’s in it for you

  • Ability to conduct decompression diving activities without direct supervision provided:
  • The diving activities approximate those of training
  • The areas of activities approximate those of training
  • Environmental conditions approximate those of training
  • Ability to enroll in TDI Advanced Nitrox, TDI Extended Range, TDI Advanced Wreck, TDI Trimix courses

TDI Decompression Diver minimum certification requirements

  • Satisfactorily complete the TDI Decompression Procedures course written examination
  • Complete all open water requirements safely and efficiently
  • Demonstrate mature, sound judgment concerning dive planning and execution

Course does not include textbook, transportation, accommodation, equipment, or air fills.  

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