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TDI Closed Circuit Rebreather Air Diluent - Deco.(MOD2) Instructor Course

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Course Overview

This is the second entry-level certification course for instructors wishing to teach the KISS or Evolution/Inspiration closed circuit rebreather for air diving. The objective of this course is to train instructors to teach the benefits, hazards, and proper procedures for diving a Closed Circuit Rebreathers and to develop basic skills to a maximum depth of 45msw using air as a diluent for formal decompression diving.


Minimum age of 21.
Closed Circuit Rebreather Air Diluent MOD1 Instructor certified.
Closed Circuit Rebreather Air Diluent - Deco MOD2 certified.
Advanced Nitrox Instructor certified.
Decompression Procedures Instructor certified.
Proof of 250 logged dives of which 100 logged dives on the specific unit.

Details of the course

The Closed Circuit Rebreather MOD2 instructor course covers:

  • History and evolution of rebreathers
  • Comparison of Open Circuit, Semi-Closed Circuit and Closed Circuit
  • Practical mechanics of the system
  • Physiology
  • Proper scrubber packing
  • Electronic or manual systems design and maintenance
  • Dive tables & dive computers
  • Dive planning
  • Problem solving - Emergency procedures

Course duration and number of dives

The Closed Circuit Rebreather MOD2 instructor course is a 3 day course and 4 dives are required.

Course Price

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Additional costs

Rental equipment if needed. set p/day
TDI Closed Circuit Rebreather Manual.
TDI Closed Circuit Rebreather Instructor Manual.
TDI Standards & Procedures Instructor Manual
TDI Evaluation forms

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.