WHAT IS A REBREATHER?
A closed circuit rebreather (CCR) is breathing apparatus that absorbs the carbon dioxide from a divers breath to allow the recycling of the substantially unused oxygen content and inert gas content. Oxygen is then added to replenish the amount metabolised by the user. This differs from open-circuit breathing apparatus where the exhaled gas is discharged directly into the environment.
WHAT ARE THE BENEFITS?
- Reduced gas consumption and gas costs
- Reduced dehydration and heat loss
- Longer bottom times and shorter deco
- Better Buoyancy
- Silent and no bubbles
- Better marine life interaction
WHY CHOOSE A JJ-CCR?
The JJ-CCR rebreather has been called ‘the 4 x 4 of the rebreather community’. In many ways this is the perfect description as it was built for all types of terrain and can be adapted to handle the most demanding adventures. CCR diving demands a skilled diver fully aware of the pros and cons of technical rebreathers and was never intended for the sports diving market.
Because it was engineered by professional wreck divers who needed a solid tool to do the job in the deep, dark, and cold waters of the Baltic Sea. These harsh environments required that the JJ-CCR was kept simple and sturdy in regards to handling and ruggedness, independent of the situation and operational environment. All of the components of the JJ-CCR have been carefully selected and are there for a reason! Each detail has a purpose and every solution can be justified. Its a versatile rebreather that makes it adaptable for whatever dive you are planning.
Philosophy behind the JJ-CCR is to keep it simple with robust construction and minimalistic work detail making it easy to handle before, during and after the dive. The main assembly consists of an aluminium housing and a stainless steel stand where all the components such as counter lungs, wings, and harness are attached. This provides the user with comfort on land when donning the rebreather as well as in water when diving it. All hoses and gas paths are made for optimal performance both in water and for maintenance purposes. A JJ-CCR is equipped with state of the art electronics and is ready to fly right out of the box. Fill it with sofnolime and serious adventures are about to begin.
• 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 COURSE
You will be asked to complete some self study before your initial classroom session. This will be in the form of a TDI manual with knowledge reviews and you will also be required to have read the manufacturers user manual. The latest version of the JJ-CCR user manual can be downloaded here. All theory, class and equipment sessions are completed before any confined or open water training.
During the JJ training course you will get a very detailed education of how the rebreather works and how to look after it. Most importantly, you will learn skills to protect yourself in the event of a system failure.
Because features have been minimised on the JJ-CCR to keep things simple, we can minimise the skill set needed to keep yourself safe. From experience, three or four well taught skill sets are much more effective than ten half learned sets. Also, the lesser number of skill sets needed results in a much better memory of how to perform the skill correctly. Continued practice by you, the diver, is easier and more efficient.
You will be trained to the highest possible standards regardless of how long this takes. Extra course dives and being able to learn at your own pace are important to ensure comfort and competency. This means you will retain more of what you learn. We believe in thorough training, in and out of the water and by doing things properly to the best of our ability.