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CMAS Semi-Closed Rebreather Diver Course

courses > rebreather > cmas semi-closed rebreather

Course Overview

This course is designed to provide a good understanding of the techniques involved in the use of semi-closed circuit Rebreathers for divers wishing to utilize the Dolphin or Ray unit. The objective of this course is to make the diver aware of the additional physiological and technical problems encountered when using a semi-closed system aswell as to provide the diver with a good understanding of the special dive planning procedures appropriate to diving with semi-closed system.


Minumum age of 16.
Nitrox certified.

Details of the course

The Semi-Closed Rebreather diver course covers:

  • History and evolution of rebreathers
  • Comparison of Open Circuit, Semi-Closed Circuit and Closed Circuit
  • Practical mechanics of the system
  • Review of Nitrox
  • Physiology
  • Formula work, metabolic consumption
  • Dive tables & dive computers
  • Problem solving
  • Dive planning

Course duration and number of dives

The Semi Closed Rebreather diver course is a 3 day course and 4 dives are required.

Course Price

currency converter CSCR

Additional costs

Recreational Rental equipment if needed. set p/day

Equipment requirement

The Semi-Closed Rebreather Diver course has no specific equipment requirement more than your standard recreational dive gear. We supply the unit, dive sorbe, nitrox tanks and mixes, and the oxygen analyser.

Got something to ask us ?

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