CLOSED CIRCUIT REBREATHER TRAINING

There’s a wide variety of Closed Circuit Rebreather (CCR) courses available — browse below to see where your next adventure begins. If you don’t see the course you’re looking for, contact us and we’ll be happy to assist.​

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CCR INTRODUCTION

1 Dive / 1/2 Day
Max Depth: 9m / 30ft
Includes: Theory presentations + Shallow skills session
Prerequisites: 18 years or older with Open Water certification or equivalent

Course Description:
Ever wanted to try diving on a rebreather? Curious about bubble-free diving?

This one-day introduction to the JJ-CCR rebreather starts with morning theory covering the fundamentals and philosophy of CCR diving. In the afternoon, you'll jump into confined shallow water for a full setup walk-through and gear orientation.

This is the perfect chance to see if CCR diving is right for you.

Note: This is not a certification course.

CCR AIR DILUENT DIVER CERTIFICATION (MOD 1.1)

7–9 Dives
Max Depth: 30m / 100ft
Duration: 6–7 days
Prerequisites: Minimum age 18, Nitrox certified, 20 logged dives

Course Description:
The TDI JJ-CCR Air Diluent Diver course is the first step into the world of closed circuit diving. You'll learn to dive with a rebreather to a maximum of 30m, experiencing the peace and efficiency of no-bubble diving.

Skills covered include:

• Full unit setup and maintenance

• Loop volume management

• PPO2 calibration and control

• Emergency protocols

• Buoyancy control with CCR

• CNS tracking

Upon successful completion, you’ll be certified to dive to 30m using air diluent.

Certification Requirements:

• Pass TDI CCR Air Diluent exam (80% minimum)

• Complete all open water skills proficiently

• Demonstrate sound judgment and dive planning

• Refresher required after 6+ months inactivity

• Course must be completed within 6 weeks of start date

CCR AIR DILUENT DECOMPRESSION DIVER (MOD 1.2)

7–9 Dives
Max Depth: 40m / 130ft
Duration: 6–7 days
Prerequisites: Age 18+, TDI Advanced Nitrox & Deco Procedures OR MOD 1.1 + 30 CCR hours + 50 logged dives

Course Description:
The TDI Air Diluent Decompression Diver course (MOD 1.2) builds on your CCR foundations to include decompression diving on the JJ-CCR unit.

You’ll refine your existing skills and add new ones related to deeper, longer dives, including:

• Decompression dive planning with CCR

• Unit maintenance and troubleshooting

• Loop management at depth

• Advanced buoyancy techniques

Certification Requirements:

• Pass MOD 1.2 exam with 80%+ and 100% remediation

• Demonstrate skill mastery on all required dives

• Show mature judgment and solid dive execution

• Course must be completed within 6 weeks

• Refresher required after 6+ months inactivity

CCR HELITROX DECOMPRESSION DIVER (MOD 1.3)

7–9 Dives
Max Depth: 45m / 150ft
Duration: 6–7 days
Prerequisites: MOD 1.2 certification + Helitrox certification (or equivalent), sufficient logged dives and CCR experience

Course Description:
This course introduces helium-based gas mixes to reduce narcosis and increase diver comfort during deep decompression dives. You’ll train in the use of trimix (Helitrox), enabling you to extend your safe diving range.

Key skills and knowledge areas:

• Planning and executing dives with Helitrox

• Advanced decompression theory and gas physiology

• Bailout planning for helium dives

• CCR-specific mixed gas protocols

Upon completion, divers are certified to a max depth of 45m using Helitrox.

CCR MIXED GAS DIVER (MOD 2)

8–10 Dives
Max Depth: 60m / 200ft
Duration: 6–8 days
Prerequisites: MOD 1.3 certification + Advanced Trimix/Technical certifications, proven CCR experience at depth

Course Description:
The CCR Mixed Gas Diver (MOD 2) course is for experienced CCR divers looking to explore deep, technical dive sites like the wrecks of Truk Lagoon or Bikini Atoll.

You’ll master:

• Deep trimix planning and execution

• Oxygen and helium management strategies

• Extended range bailout and redundancy systems

• Complex decompression with multiple gases

This course pushes your skills, awareness, and dive planning capabilities to the next level.

Note: This is the gateway to expedition-level technical diving.

If you don’t see your course here or want a custom CCR training pathway, get in touch — we’re happy to help plan your next big dive goal.