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Closed Circuit Rebreather Courses

Rebreather Diving Course

Rebreather Diving Course - Rebreatherpro-Training

Rebreather diving is underwater diving using rebreathers which recirculate the air already used by the diver after replacing oxygen the diver metabolises and removing the carbon dioxide from metabolic product. Rebreather diving is used by recreational, military and scientific divers where it has advantages over open circuit scuba, and surface supply of breathing gas is impracticable.

The Basic Principle

At shallow depths, a diver using open-circuit breathing apparatus typically only uses about a quarter of the oxygen in the air that is breathed in, which is about 4 to 5% of the inspired volume. The remaining oxygen is exhaled along with nitrogen and carbon dioxide - about 95% of the volume. As the diver goes deeper, much the same mass of oxygen is used, which represents an increasingly smaller fraction of the inhaled gas. Since only a small part of the oxygen, and virtually none of the inert gas is consumed, every exhaled breath from an open-circuit scuba set represents at least 95% wasted potentially useful gas volume, which has to be replaced from the breathing gas supply. A rebreather recirculates the exhaled gas for re-use and does not discharge it immediately to the surroundings.[1][2] The inert gas and unused oxygen is kept for reuse, and the rebreather adds gas to replace the oxygen that was consumed, and removes the carbon dioxide.[1] Thus, the gas in the rebreather's circuit remains breathable and supports life and the diver needs only carry a fraction of the gas that would be needed for an open-circuit system. The saving is proportional to the ambient pressure, so is greater for deeper dives, and is particularly significant when expensive mixtures containing helium are used as the inert gas diluent. The rebreather also adds gas to compensate for compression when depth increases, and vents gas to prevent overexpansion when depth decreases.

Rebreather Experience - Rebreatherpro-Training

Rebreather Experience

This Program is designed to introduce you to the basic concepts of Rebreathers, and to provide a practical confined water and optional Open Water expe... read more »

TDI Air Diluent & Air Diluent Decompression CCR Diver Course - Rebreatherpro-Training

TDI Air Diluent & Air Diluent Decompression CCR Diver Course

Air Diluent & Air Diluent Decompression CCR Diver Who this course is for The open circuit technical diver, or entry level CCR diver, looking to ut... read more »

TDI Mod2 Mixed Gas CCR - Rebreatherpro-Training

TDI Mod2 Mixed Gas CCR

TDI MOD2 Mixed Gas Rebreather Course The TDI CCR Mixed Gas course is your next step into closed circuit rebreather diving, with the addition of heliu... read more »

TDI Helitrox CCR Mod1 - Rebreatherpro-Training

TDI Helitrox CCR Mod1

The CCR Helitrox Diver Course The Helitrox course is designed to allow divers to use Helium in their breathing mixtures for dives between 30m-45m. Th... read more »

TDI Mod3 Advanced Mixed Gas - Rebreatherpro-Training

TDI Mod3 Advanced Mixed Gas

This is the highest level certification course for divers wishing to utilize the unit specific closed circuit rebreather (CCR) for advanced mixed gas ... read more »

IANTD MOD3 Full Trimix CCR - Rebreatherpro-Training

IANTD MOD3 Full Trimix CCR

This Program is designed to train divers in the safer use and technology of Rebreathers for deep diving to depths in excess of 60 msw. The knowledge ... read more »

IANTD MOD2 Normoxic CCR - Rebreatherpro-Training

IANTD MOD2 Normoxic CCR

This Program is designed to train divers in the safer use of the CCR for dives using normoxic helium-based gas mixtures for diluent and stages. It is ... read more »

IANTD MOD1 ART CCR Diver - Rebreatherpro-Training

IANTD MOD1 ART CCR Diver

This Program is designed to train divers in the safer use and technology of CCR for dives requiring up to 15 minutes of decompression. It is also espe... read more »

IANTD MOD1 CCR Course - Rebreatherpro-Training

IANTD MOD1 CCR Course

This course is designed to train divers in the safer use and technology of CCR, for dives requiring up to 15 minutes of decompression. It is also espe... read more »

Padi Tec40 CCR - Rebreatherpro-Training

Padi Tec40 CCR

What will I do? Learn to plan and make dives using air diluent and air or enriched air (EANx) bailout gas on Type T (technical) closed-circuit rebrea... read more »

Padi Rebreather Diver & Advanced Rebreather Diver Course - Rebreatherpro-Training

Padi Rebreather Diver & Advanced Rebreather Diver Course

Rebreather Diver Think rebreathers are just for technical diving? Think again because the latest rebreathers are lightweight, easy-transportable units... read more »

tdi CCR rebreather full cave course - Rebreatherpro-Training

tdi CCR rebreather full cave course

Congratulations to everyone that completed their CCR Rebreather Full Cave class this last two weeks in Cave Country France ???? Living the dream, one dive at a time !! #rebreatherprotraining #TDI ... read more »

Congratulations to Grant, Tony and Chris - Rebreatherpro-Training

Congratulations to Grant, Tony and Chris

A little late due to a crazy week out here in Malta, but congratulations to Grant, Tony and Chris for all their hard work during their TDI Mixed Gas Course last week !! Grant and Tony passed with flyi... read more »

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