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CMAS Advanced Semi-Closed Rebreather Diver Course

courses > rebreather > cmas advanced semi-closed rebreather

Course Overview

This course is designed to provide the certified Semi-Closed Rebreather diver the techniques involved in the use of semi-closed circuit Rebreathers for divers wishing to utilize the Dolphin unit performing decompression dives.


Minumum age of 16.
Two Star certified.
Nitrox certified.
Semi-Closed Rebreather certified.

Details of the course

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

Course Price

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Additional costs

Recreational Rental equipment if needed. set p/day

Equipment requirement

The Advanced 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 ?

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.