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SSI Hypoxic Trimix


80 meters or 100 meters?!

This is the pinnacle of technical diving. Here you will use all the knowledge, skills, equipment and experience from all of your previous training and push your limits to the extreme.

There are two pathways; one takes you to 80 meters and the other to 100 meters using the same Extended Range Total Diving System you mastered in previous programs. However, you will now use a minimum of three stages for decompression and travel gases.

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Register to access basic student meterial


Minimum age: 18

Duration: 7 days

5 Academic Sessions

Confined Water Session + 6 Open Water Dives

  • Minimum age of 18
  • Technical Extended Range Certification
  • 100 logged dives
    • 30 dives deeper than 30 meters
    • 10 dives deeper than 45 meters
    • 20 dives requiring staged decompression with at least two (2) gas switches
  • Must have a current medical examination for scuba diving signed by a physical being valid at the registration of the class
  • Must complete the medical questionnaire and liability release form before diving
  • Must have a personal diving insurance to cover mixed gas and technical diving 
  • 7 days
  • Day 1: Lecture and confined water session where we review equipment configuration, S-drill, valve drill, stage bottle handling, gas switch, laying guideline and emergencies. We also initiate a drill to include a third gas switch and Hypoxic Zone Protocol (Minimum Breathing Depth).
  • Day 2: Open Water Dive 1 up to 40m
  • Day 3: Open Water Dive 2 up to 40m
  • Day 4: Open Water Dive 3 beyond 55m
  • Day 5: Open Water Dive 4 beyond 55m
  • Day 6: Open Water Dive 5 beyond 75m
  • Day 7: Open Water Dive 6 beyond 75m
  • Academic Sessions
  • Confined Water Session
  • Six Open Water Dives
  • All tank rentals
  • All gas fills and top ups except helium cost
  • Boat fee

Not included:

  • Helium cost at 0.059€. See class logistics for Trimix fills. Cost may vary based on helium price and availability on the actual dates of the class. Therefore the price for class logistics are updated accordingly
  • Helium cost for instructor’s mixes shared amongst the students
  • Medical diving insurance for mixed gas diving. 
  • Hypoxic Trimix Diving
  • Decompression Gasses
  • Dive Planning
  • Hypoxic Diving Procedures
  • Equipment Considerations
  • Emergency Procedures
  • Maximum training depth of 100 metres
  • Maximum 60 minutes of deco on dives up to 80m
  • Maximum 90 minutes of deco on dives up to 100m
  • Use of Trimix 15/55 and 12/65 as bottom gas
  • Use of one bottom stage
  • Use of two deco stage bottles (Nitrox 50% & Oxygen)
  • Certification is awarded after completion of course and a pass mark of 80% or more is achieved
  • If a passing mark isn’t achieved the first time round, students may retake the exam.
  • SSI Hypoxic Trimix certification is awarded after successful completion of this program
  • At this stage in your diving career it is useful to have your own equipment. If you don’t however, we do carry a limited number of rental regulators for double tanks and deco tanks, as well as backplates and wings to help you get started with your technical diving training
  • A 50% deposit is required upon confirmation of enrolment, the remaining balance is due before the start of the class

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