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TDI Semi-Closed Rebreather Diver Course

courses > rebreather > tdi semi-closed rebreather

Course Overview

This is the entry-level certification course for recreational divers wishing to utilize the Dolphin or Ray semi-closed rebreather. The objective of this course is to train divers in the benefits, hazards, and proper procedures for using Semi-Closed Rebreathers.


Minumum age of 15.
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 TSCR

Additional costs

Recreational Rental equipment if needed. set p/day
TDI Semi-Closed Rebreather Manual. 1500.00 THB
TDI Certification. 1500.00 THB

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 ?

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.