What Is a Rebreather?
A closed-circuit rebreather (CCR) is advanced breathing apparatus designed for technical diving. Instead of wasting exhaled gas, the CCR absorbs carbon dioxide from each breath, recycles the unused oxygen and inert gases, and adds fresh oxygen to replace what your body metabolises.
This process differs from open-circuit scuba, where exhaled gas escapes directly into the environment. As a result, CCR diving maximises gas efficiency, extends dive times, and creates a safer, more controlled underwater experience.
What Are the Benefits of a Rebreather?
When you dive with a CCR, you gain several advantages over traditional scuba systems. Key benefits include:
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Reduced gas consumption and lower gas costs
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Less dehydration and heat loss during dives
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Longer bottom times with shorter decompression
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Improved buoyancy control
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Silent diving with no bubbles
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Closer, more natural marine life interaction
These benefits make rebreathers the preferred choice for serious technical divers and explorers.
Why Choose a JJ-CCR Rebreather?
The JJ-CCR rebreather is often described as the “4×4 of the rebreather community.” This comparison fits perfectly because the JJ-CCR is engineered to handle all types of diving terrain, from shallow wrecks to extreme deep exploration. Its versatility makes it one of the most trusted rebreathers for technical diving worldwide.
Originally developed by professional wreck divers in the Baltic Sea, the JJ-CCR was designed to perform in harsh, cold, and challenging environments. To meet these demands, the unit had to be simple, rugged, and reliable. Every component was chosen with purpose, from its electronics to its frame, ensuring that each detail serves a vital function.
The Design Philosophy Behind the JJ-CCR
The philosophy of the JJ-CCR design is straightforward: keep it simple, keep it strong. With robust construction and minimalist detailing, the rebreather is easy to use before, during, and after a dive.
Key features include:
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An aluminium housing with a stainless steel stand for strength and stability
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Carefully integrated counter lungs, wing, and harness for comfort on land and underwater
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Optimised hose and gas paths for performance and easy maintenance
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State-of-the-art electronics, ready to dive straight out of the box
To begin your adventure, simply fill the JJ-CCR with Sofnolime, and you are ready for serious exploration.
The JJ-CCR Advantage
Ultimately, the JJ-CCR rebreather stands out as a reliable, adaptable, and high-performing unit for divers who want to push limits safely. Whether you are exploring deep wrecks, diving caves, or seeking longer bottom times, the JJ-CCR gives you the confidence and tools to succeed.
Ready to train on the JJ-CCR? Contact Black Water Tek today and start your journey into advanced rebreather diving.
FEATURES
• Highly robust aluminium housing to which it is possible to secure up to 4 diving tanks (2-12L) using conventional tank belts.
• User repackable soda lime canister (axial).
• Heavy duty stand
• Integrated handle
• Back-mounted (over the shoulder) counter lungs
• Redundant power supply: One battery for the controller, one battery for the HUD and two parallel batteries for the solenoid. None of the batteries are integrated into the loop
• Integrated ADV (Automatic Diluent Valve)
• DSV (Dive Surface Valve)
• Valve for manual oxygen supply with the option to feed in external gases
• Valve for manual diluent supply with the option to feed in external gases (Standard on CE edition, Optional for Intl. edition)
• Independent digital HUD (Head Up Display) with real time display of PPO2 for all three oxygen sensors
• Reliable controller with an integrated Shearwater multi-gas decompression computer
What to Expect from Your JJ-CCR Rebreather Course
Before your JJ-CCR training course begins, you will complete independent self-study to build a strong foundation. This preparation includes:
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Working through the official TDI manual with knowledge reviews
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Reading the JJ-CCR manufacturer’s user manual (download the latest version here)
Once you finish the self-study, you will move into your classroom and equipment sessions. These theory lessons always take place before any confined or open water training. This step-by-step structure ensures that you have the knowledge and skills in place before entering the water.
During the JJ-CCR rebreather training, you will:
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Learn how the rebreather works
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Understand how to maintain it properly
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Practice essential safety drills to handle system failures
JJ-CCR Rebreather Training Approach
Because the JJ-CCR rebreather is designed with simplicity in mind, it requires fewer skills to operate safely. From experience, mastering three or four well-taught skill sets is far more effective than trying to remember ten poorly-practiced ones.
As a result, you will:
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Build stronger memory recall
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Perform skills correctly under pressure
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Develop long-term confidence in your abilities
Furthermore, the streamlined approach makes ongoing practice easier and more efficient, helping you reinforce these critical skills even after your course ends.
Training Standards and Flexibility
Throughout the program, you will train to the highest possible standards, regardless of how much time you need. We provide:
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Extra course dives for additional practice
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Flexible pacing so you can learn at your own speed
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A structured pathway that balances theory and practical sessions
Because of this flexibility, you retain more knowledge and apply it effectively both in and out of the water We believe in thorough training, in and out of the water and by doing things properly to the best of our ability.
Ultimately, our training philosophy ensures that every JJ-CCR diver leaves the course confident, competent, and ready for advanced technical diving.
Start Your JJ-CCR Training Today
Are you ready to take the next step in your diving journey? Join Black Water Tek for world-class JJ-CCR rebreather training in Indonesia, Egypt, and beyond.
Whether your goal is to:
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Build a solid foundation
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Advance into deeper technical diving
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Strengthen your rebreather safety skills
…we will guide you every step of the way. We believe in thorough training, in and out of the water and by doing things properly to the best of our ability.
Contact us today to book your JJ-CCR course and start your journey toward becoming a confident and competent CCR diver.
