Why Choose the JJ-CCR Unit?
TheJJ-CCR is known for its robust design, reliability, and ease of use, making it a favorite among technical and recreational divers alike. Itsfully electronic control system ensures precise oxygen monitoring and management, with manual override options for those who prefer to adjust their settings manually. The unit also features back-mounted counterlungs, keeping the front of the diver free from bulky equipment, which allows for more streamlined movement underwater.
Three Certification Levels
The JJ-CCR Mod 1 course is structured to provide different levels of certification, depending on your diving goals and prior experience. Here’s a breakdown of the three certification levels you can achieve:
1. Air Diluent No Decompression (Up to 30 meters)
This is the entry-level certification, and it’s designed for divers who are new to rebreathers but have experience in open-circuit scuba. The course focuses on using air as a diluent and diving to depths of up to 30 meters (100 feet) with no mandatory decompression stops.
Key Skills Covered:
- Basic operation of the JJ-CCR, including assembly, disassembly, and maintenance.
- Gas management and loop volume control for buoyancy.
- Safety procedures for handling oxygen toxicity, hypoxia, and system failures.
- Introduction to emergency bailout procedures and gas switching(
This level is perfect for recreational divers who want to extend their bottom time while staying within no-decompression limits.
2. Air Diluent Decompression (Up to 40 meters)
For those who want to extend their range and dive deeper, the Air Diluent Decompression certification allows you to dive to 40 meters (130 feet) and includes mandatory decompression procedures. This level builds on the skills acquired in the 30-meter certification but introduces more advanced dive planning and gas management techniques, particularly for decompression stops.
Key Skills Covered:
- Decompression theory and planning, using air as a diluent.
- Advanced emergency procedures for longer dives, including bailout gas switching.
- Handling longer bottom times and deeper dives with decompression obligations.
- Managing more complex dives while still using air as the primary diluent(
This certification is ideal for divers looking to extend their underwater time while practicing safe decompression techniques for deeper exploration.
3. Helitrox Decompression (Up to 45 meters)
The Helitrox certification allows divers to use a helium mix to reduce the effects of nitrogen narcosis on deeper dives, pushing the depth limit to 45 meters (148 feet). This level is for experienced divers who are comfortable with extended decompression and want to minimize narcosis during deeper technical dives.
Key Skills Covered:
- Helitrox gas management: Understanding how to mix and manage helium, oxygen, and nitrogen.
- Advanced decompression procedures, including using helium to reduce narcosis at greater depths.
- Dive planning for deeper dives requiring long decompression stops.
- More complex emergency bailout and gas-switching techniques to handle deeper, extended technical dives(
This certification is ideal for divers aiming to expand into technical diving, where precise gas management, extended bottom times, and deep-water exploration are key.
Course Structure and Training Modules
1. Theoretical Learning:
Each certification level begins with classroom sessions and eLearning to cover the theoretical aspects of rebreather diving. You’ll study topics such as:
- Rebreather function and physiology: Learn how rebreathers work and the physiological principles behind them, such as controlling partial pressure of oxygen (PO₂) and understanding oxygen toxicity.
- Dive planning: Especially important for decompression and Helitrox diving, where gas mixes and depth planning are more complex.
- Safety considerations: Learn to handle emergencies, from CO₂ buildup to oxygen toxicity.
2. Confined Water Training:
Before open water dives, confined water training provides hands-on experience with the unit. You’ll practice key skills such as:
- Buoyancy control and loop volume management.
- Gas switching and emergency drills, including bailout procedures.
- Proper use of rebreather electronics and sensor calibration.
3. Open Water Dives:
Each certification level requires a series of open water dives:
- Air Diluent No Decompression: 6 dives, focusing on perfecting buoyancy, loop control, and safety drills.
- Air Diluent Decompression: Additional dives to practice decompression stop management and extended bottom times.
- Helitrox Decompression: Dives up to 45 meters, focusing on Helitrox gas switching, longer decompression schedules, and advanced safety techniques
Prerequisites
To enroll in the JJ-CCR Mod 1 course, participants must:
– Be18 years or older.
– Hold aTDI Nitrox Diver certification (or equivalent).
– Have logged at least20 open water dives before starting the course
For those interested in decompression diving, additional certifications likeTDI Advanced Nitrox andDecompression Procedures are required. This ensures that divers have experience in planning and executing longer, deeper dives.
Course Format and Duration
The course is designed to fit into a5-6 day schedule, with the exact duration depending on your skill level and availability. After completing self-study throughTDI eLearning, you’ll engage in classroom sessions to solidify theoretical knowledge before moving on to confined and open water training.
Most students opt for the6-day format, which provides ample time for both confined water and open water dives, ensuring a thorough understanding of the JJ-CCR unit and its capabilities.
Required Equipment
While the JJ-CCR Mod 1 course focuses primarily on rebreather training, several essential pieces of equipment are required:
-JJ-CCR Unit: Available for purchase if you don’t own one yet.
-Sofnolime: For CO₂ scrubbing.
-Oxygen and Diluent Tanks: Depending on your location, you may need to bring your own or arrange for rentals.
-Backup dive computers: Specifically compatible with CCR dives, to monitor PO₂ and CNS levels
Additionally, rebreather rental options are available if you’re not ready to purchase your own unit just yet.
Buy Your JJ-CCR Unit
If you’re serious about rebreather diving, why not invest in your own JJ-CCR? This unit is renowned for its reliability and performance, perfect for divers who want to explore deep wrecks,caves, or simply enjoy extended bottom times without worrying about gas consumption. With the JJ-CCR, you’ll be prepared for technical diving of any kind, from recreational depth limits to extreme expeditions.
Get Started Today
With the JJ-CCR Mod 1 course, you’ll not only gain proficiency in operating one of the most advanced rebreathers on the market but also develop the confidence to explore new underwater frontiers. Whether you’re planning a recreational dive or gearing up for technical expeditions, this course will equip you with the skills and knowledge to dive safely and effectively.
Enroll today to begin your journey into CCR diving! Still have questions? Contact us for more details or to arrange a custom training schedule.