Download the JJ-CCR Information PDF  
  JJ-Closed Circuit Rebreather (CCR) Day Experience / Try Dive 
  Advantages of CCRs are that they significantly extend your time in the water, cut your decompression time whilst breathing warm moist gas and having the benefit of gas reserves on your dive. CCR divers enjoy more time diving shipwrecks or in cave systems, underwater photographers get the edge due to the distinct lack of bubbles and being silent you as the diver get much more interaction with marine species around you. Perhaps you’ve wondered about how it must feel to dive a rebreather or perhaps you’ve decided that closed circuit rebreather diving is for you and you’d like to try dive the JJ-CCR. You might even be a qualified rebreather diver on another unit, whatever the reason, the stats speak for themselves, far more CCR divers cross over to the JJ than away from it. Once you’ve dived this unit, there’ll be no going back. There’s been many figures of speech written over the internet regarding the JJ, which has been described as the ‘Rolex’ or the ‘4x4’ of the rebreather world and the journey to be an instructor on the unit is incredibly selective maintaining the high ethos & exclusivity surrounding the JJ-CCR, which is only a good thing. Whatever the reason, you won’t be disappointed. day experience  
  Incentive  
  Should you complete your JJ-CCR day experience and go on to enrol on your JJ-CCR Air Diluent (MOD1) course with us, whether it’s a deco course or not, we’ll discount your training costs by £100!  
  Pre-Requisites  
  Minimum of Open Water diver from any agency. Minimum of 18 years of age or 15 years of age with signed parental consent.  
  Course Duration & Location    
  One Day

We can run your JJ CCR crossover course at NDAC Chepstow, along the Gower Peninsular or at a couple of carefully selected dive sites along the stunning Pembrokeshire coastline.
 
  Knowledge development  
  JJ CCR The first half of the day experience will be allocated for you to understand how a rebreather works and together we’ll physically assemble your JJ-CCR and show you how we analyse gas, go through various checks and calibrate the unit . We’ll discuss basic skills and emergency procedures with you too and you’ll be ready for your afternoon’s dive.  
Open Water Dives
In the afternoon you will then dive the rebreather in open water under direct supervision of your instructor who will also be on a JJ-CCR unit. You'll get to experience how different it feels and dives and we'll spend time working on your buoyancy, trim & propulsion in a depth of water not exceeding 15 metres, but it's your experience and we'll keep it as shallow as you feel comfortable.
  Cost & what's included  
  The course costs £150 based upon two (maximum) divers on the course. One to one cost - £250 and includes your JJ-CCR hire, oxygen, diluent gas & sofnolime for both you and your instructor’s rebreather. The cost includes any other diving equipment you may require with the exception of a drysuit. If diving a drysuit, you will require a drysuit certification.  
  What is not included  
  The JJ CCR day experience/try dive can take place at NDAC Chepstow if you wish, there is a fee of £17 per student per day payable directly to the centre.  
  What happens after your JJ-CCR Day experience?  
  By now you’ll understand what the advantages are of rebreather diving over open circuit diving are and you may be committed to investing in your very own unit. You don’t need to be a technical diver to get trained, you don’t even need to be an advanced open water diver. We can get you enrolled on the TDI air diluent training course to dive the unit with no decompression to a maximum depth of 30 metres. If you’re already a technical diver we can take you straight onto the TDI Air Diluent Decompression Diver course, some call it MOD1/Level1.  
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  JJ-CCR MOD1/Level 1 Crossover course  
  All CCRs are subtly different, the JJ is one of few that uses rear mounted counter lungs, shearwater electronics, a different position for dil flush, o2 add etc. The crossover course is specifically designed for already trained CCR divers to learn how to adapt the already learned skills to work on the JJ-CCR.  
  Pre-Requisites crossover  
  Minimum MOD1 CCR diver from any agency.  
  Course Duration & Location  
  Two Days  
We can run your JJ CCR crossover course at NDAC Chepstow, along the Gower Peninsular or at a couple of carefully selected dive sites along the stunning Pembrokeshire coastline.
  Knowledge Development    
  We’ll refresh the knowledge you already have from diving your CCR and you’ll be given a JJ-CCR manual to accompany your course and a TDI CCR manual if applicable. Together, we’ll assemble your unit and you’ll see obvious differences between the unit on which you’ve been trained and the JJ-CCR. After analysing, running through our check list and calibration we’ll discuss maintenance, basic skills & emergency procedures before getting the unit in the water.We’ll refresh the knowledge you already have from diving your CCR and you’ll be given a JJ-CCR manual to accompany your course and a TDI CCR manual if applicable. Together, we’ll assemble your unit and you’ll see obvious differences between the unit on which you’ve been trained and the JJ-CCR. After analysing, running through our check list and calibration we’ll discuss maintenance, basic skills & emergency procedures before getting the unit in the water.  
  Open Water Dives  
  For the next day and a half you’ll be conducting three dives in open water to refresh your skills and learn new methods particular to the JJ-CCR to give you the confidence to dive the unit. The open water dives will culminate with your qualification dive to your maximum depth (30 or 45m).  
  Cost and what is included?  
  The course costs £400 based upon two (maximum) divers on the course. One to one cost - £450 and includes oxygen, diluent gas & sofnolime for both you and your instructor's rebreathers.  
  What is not included  
  The JJ CCR training can take place at NDAC Chepstow if you wish, there is a fee of £17 per student per day payable directly to the centre. There is also a fee for any additional equipment required to be rented for the course. We can also rent you a JJ-CCR for your course at a cost of £100 per day.  
  What happens after your JJ-CCR Crossover course?  
  As you’ll already be aware, it will be time to gain some experience on the unit before progressing to the MOD2 level and using trimix as a diluent gas.  
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  TDI JJ-CCR Air Diluent Course (No deco) 
  This TDI course is the basic entry level certification for closed circuit rebreather diving using the JJ-CCR. The objective of the course is to train divers in the benefits, hazards and proper procedures for diving on the JJ-CCR to a maximum depth of 30m with no decompression using air as a diluent gas. It is highly recommended to have your own unit for the course but if you'd prefer we can rent you a JJ-CCR for £100 per day for the duration of your course. pool teach  
Skills include:
  • Setup and maintenance of your unit
  • Unit calibration
  • Loop volume management
  • Buoyancy control
  • 02 monitoring
  • Bailout & emergency procedures
  Pre-Requisites    
  Minimum age is 18, PADI/TDI Nitrox diver or equivalent. Have a minimum of 20 logged open water dives.  
  Knowledge Development    
  JJ CCR

You'll have a TDI rebreather manual to work through and there'll be a number of theory sessions throughout the course to go over knowledge reviews and ensure sufficient knowledge is attained prior to the final exam. we'll also conduct a service and repair workshop for dive site maintenance & problem solving.

Course Duration

5 Days

 
  Open Water Dives    
 

Six open water dives and total of 420 minutes in water time.

 
  How much is it and what is included?  
  The course costs £650 based upon two or more divers on the course. One to one cost - £750 and includes the following:
  • Manual
  • Certification Fee
 
  What is not included?  
 

The cost of your own gas and sofnolime is not included for the course duration. The JJ-CCR course can either take place or culminate at NDAC Chepstow, there is a fee of £17 per student per day payable directly to the centre. There is also a fee for any additional equipment required to be rented for the course.

 
  What happens after your TDI JJ-CCR Air diluent course  
 

It's time for you to enjoy your unit and go get some experience. Once you've had your JJ-CCR six months and accumulated 30 hours you can enrol on the TDI Air Diluent Decompression Procedures course or the TDI CCR Helitrox course.

 
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  TDI JJ-CCR Air Diluent Decompression Procedures Course (45m) 
 

Still an entry level certification for closed circuit rebreather diving using the JJ-CCR. The objective of this course is to train CCR Air Diluent divers or open circuit technical divers in the benefits, hazards and proper procedures for diving on the JJ-CCR with air and a diluent gas to a maximum depth of 45 metres including decompression. It is highly recommended to have your own unit for the course but if you'd prefer we can rent you a JJ-CCR for £100 per day for the duration of your course.

open water  
  Skills include:
  • Decompression planning
  • Setup and maintenance of the unit
  • Calibration of electronics
  • Loop volume management
  • Buoyancy control
  • Bailout & emergency procedures
  • CNS tracking
   
  Pre-Requisites    
 
  • Minimum of 18 years of age
  • Be an open circuit qualified technical diver (TDI Advanced Nitrox & Deco Procedures/IANTD ART/PADI Tec 45 or equivalent)
  • Have a minimum of 50 logged open water dives
  • OR
  • Hold an Air Diluent CCR Diver certification from any agency
  • Have a minimum of 30 hours on the CCR unit with 6 months CCR diving experience
   
  Knowledge Development    
  open water

You'll have a TDI rebreather manual to work through and there'll be a number of theory sessions throughout the course to go over knowledge reviews and ensure sufficient knowledge is attained prior to the final exam. we'll also conduct a service and repair workshop for dive site maintenance & problem solving.

 
Course Duration
5 Days
Open Water Dives
Seven open water dives totalling 420 minutes in water time required for certification.
 
 
  How much is it and what is included?  
 

The course costs £700 based upon two or more divers on the course. One to one cost - £800 and includes the following:

  • Manual
  • Certification Fee
 
  What is not included?  
 

The cost of your own gas and sofnolime is not included for the course duration. Travel to and from the training locations and open water sites are your responsibility. The JJ-CCR course can either take place or culminate at NDAC, there is a fee of £17 per student per day payable directly to the centre. There is also a fee for any additional equipment required to be rented for the course.

 
  What happens after your TDI JJ-CCR Air Diluent decompression procedures course?  
 

Once you have completed a minimum of 50 CCR dives totalling at least 50 hours (25 hours minimum on the JJ-CCR) you can progress to the TDI CCR Mixed Gas course (MOD2/Level 2). The course is designed to use trimix as a diluent and bailout gas to safely conduct decompression diving to a maximum depth of 60 metres.

 
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  TDI JJ-CCR Helitrox Decompression Course 
 

Some individuals who have not been trained in the TDI system get a little baffled with the term ‘Helitrox'. Similar to IANTD's ‘Advanced Recreational Trimix' qualification, the JJ CCR Helitrox course allows already qualified JJ-CCR divers to dive using a diluent and bailout gas mix of no greater than 20% helium and no less than 21% oxygen. The qualification depth is still 45 metres but the diver will be trained to use air/nitrox & helium diluent for decompression diving, yet further extending bottom time and significantly cutting the effects of gas narcosis.

water  
    Skills include:
  • Setup and maintenance of the unit
  • Loop volume management
  • Calibration of electronics
  • Emergency procedures
  • Buoyancy control
  • CNS tracking
  • Decompression planning
  Pre-Requisites  
 
  • Minimum of 18 years of age
  • Be an open circuit qualified technical diver (TDI Advanced Nitrox & Deco Procedures/IANTD ART/PADI Tec 45 or equivalent)
  • Have a minimum of 50 logged open water dives
  • OR
  • Hold an Air Diluent CCR Diver certification from any agency
  • Have a minimum of 30 hours on the CCR unit with 6 months CCR diving experience
   
  Course Duration  
  5 days.  
  Knowledge Development  
 

You'll have a TDI rebreather manual to work through and there'll be a number of theory sessions throughout the course to go over knowledge reviews and ensure sufficient knowledge is attained prior to the final exam.

 
  Open Water Dives  
  Seven open water dives totalling 420 minutes in water time.  
  How much is it and what is included?  
 

The course costs £725 based upon two or more divers on the course. One to one cost - £825 and includes the following:

  • Manual
  • Certification Fee
 
  What is not included?
 

The cost of your own gas and sofnolime is not included for the course duration. The training can either take place or culminate at NDAC, there is a fee of £17 per student per day payable directly to the centre. There is also a fee for any additional equipment required to be rented for the course.

  What happens after your JJ-CCR TDI Helitrox deco procedures course?
 

Once you have completed a minimum of 50 CCR dives totalling at least 50 hours (25 hours minimum on the JJ-CCR) you can progress to the TDI CCR Mixed Gas course (MOD2/Level 2). The course is designed to use trimix as a diluent and bailout gas to safely conduct decompression diving to a maximum depth of 60 metres.

 
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