TDI CCR Advanced Mix Gas Instructor

TDI CCR Advanced Mix Gas Instructor

This is the instructor level certification course for instructors wishing to teach the Advanced Mixed Gas Closed Circuit Rebreather Course. The objective of this course is to train instructors to teach mixed gas rebreather diving and to develop technical rebreather diving skills appropriate to diving to a maximum depth of 100 metres / 330 feet for the maximum depth set by the manufacturer of the specific unit, using custom trimix as a breathing gas. This course is manufacturer specific.

TDI Advanced Gas Instructor

Rebreather Advanced Mix Gas Instructor Course prerequisites:

  • Minimum age 21
  • TDI CCR Mixed Gas (unit specific) Instructor (or equivalent) with 10 mixed gas students taught and 1-year teaching experience on the unit specific CCR
  • Properly verified and logged proof of 30 mixed gas dives on the unit-specific rebreather with 15 logged beyond 65 metres / 215 feet

Upon successful completion of this course, graduates may teach the TDI Advanced Mixed Gas Closed Circuit Rebreather Course not to exceed the manufacturers designed depth maximum of 100 metres/330 feet with custom mixed gas as a diluent.

Course Structure and Duration:

Open Water Execution

  • Four dives

Course Structure

  • TDI allows instructors trainers to structure courses according to the
    number of students participating and their skill level


  • The minimum number of classroom and briefing hours is 6

What you can expect to learn:

  • History and evolution of rebreathers
  • Gas Physiology
  • Emergency procedures
  • Properly execute the planned dive within all pre-determined limits