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CMAS Closed Circuit Rebreather Advanced Mixed Gas Diluent (MOD4) Instructor Course

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Course Overview

This is the highest level certification course for instructros wishing to teach the KISS or Evolution/Inspiration closed circuit rebreather for advanced mixed gas diving. The objective of this course is to train instructors toteach the benefits, hazards, and proper procedures for diving Closed Circuit Rebreathers and to develop advanced skills appropriat to technical diving to a maximum depth of 100msw using a mixed gas as a diluent.


Minumum age of 21.
CMAS 2 Star instructor certified.
Advanced Trimix instructor certified.
Closed Circuit Rebreaher - Mixed Gas Diluent Decompression (MOD3) Instructor certified.
Proof of 1000 logged dives of which 100 dives on the specific unit using helium based diluent and 50 dives deeper than 65msw

Details of the course

The Closed Circuit Rebreather MOD4 instructor course covers:

  • Physiology
  • Formula work
  • Dive tables & dive computers
  • Dive planning
  • Equipment maintenance
  • Problem solving - Emergency procedures

Course duration and number of dives

The Closed Circuit Rebreather MOD4 instructor course is a 5 day course and 7 dives are required.

Course Price

currency converter CCCR4I

Additional costs

Rental equipment if needed. set p/day
Helium fills p/liter
DIve sorbe for the required dives
Upgrade fees

Equipment requirement

The Closed Circuit Rebreather instructor course has no specific equipment requirement more than your standard recreational dive gear. We supply the unit, tanks and mixes, and the oxygen analyser.

Got something to ask us ?

We are Technical diving education professionals and over the years we have been asked almost everything, feel free to look at our most commonly asked technical diving questions or contact us directly.