MOD 3 – Mixed Gas Diver


Courses Overview

MOD 3 – Advanced Mixed Gas Diver – Upon successful completion of this course, graduates may engage in technical diving activities utilizing the JJ-CCR to a maximum of 100 metres / 328 feet, utilising a mixed gas (Helium/Heliox/trimix) diluent containing less than 16 percent oxygen content (hypoxic trimix).

Crossover to JJ-CCR – if you are already qualified on another unit, this course will familiarise you with the safe and effective use, procedures and maintenance of the JJ-CCR and we can cross you over to the advanced mixed gas level

What’s Involved

MOD 3 involves a minimum of 600 minutes in water time and at least 8 dives, usually over a minimum of eight days. Crossovers are a minimum of four days. To gain certification you have to satisfy the skills performance and theory requirements of the course, successfully complete an exam and demonstrate an appropriate and mature attitude towards deep CCR diving

Course Skills

Please get in touch for specifics.

Why Do the Course?

This is the top level certification course for divers wishing to utilise a closed circuit rebreather (CCR) for mixed gas diving. The objective of the course is to train divers in the benefits, hazards and proper procedures for mixed gas diving on the unit specific CCR, utilizing a mixed gas diluent containing hypoxic oxygen and high percentage helium mixes, and to develop advanced dive planning and CCR diving skills appropriate to technical diving to a depth of 100 metres / 328 feet. We also offer the only unlimited depth advanced CCR course, the ANDI L5. email for info

What’s Included

The course fee covers instructional time, manual, use of facilities including pool. Students are expected to pay any fills, boat costs and accommodation costs required to complete the course but we do have packages available. Only after the successful completion of the course do you pay your certification fee – “you pay for training – you earn the certification”

What You Need

Standard scuba equipment and the JJ-CCR plus a spare mask, timing device x 2, a dsmb, a spool/reel with 30m of line. 2 x 7 or 11 litre aluminium cylinder with first and second stage plus spg for bailout. Equipment may be rented for the duration of the course

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Further Information

Enquires regarding rebreather training or crossovers to the JJ-CCR should be made to Matt Jevon by phone +353-21-471-4992 or contact him by email:

Course Information

Course Prices

MOD 3 . €1,100.00

X-Over €600


MOD 2 diver or equivalent.

At least 50 logged hours on the CCR over 50 dives, at least 20 must be deco and 20 must be deeper than 50m, more is better

18 years old

Student to Instructor Ratio

3:1 (maximum)

No. Sessions

600 minutes in water plus unit assembly, breakdown for maintenance and cleaning.


On joining we will send you a kit list, full kit can be rented for the course

Related Courses

Advanced Wreck

Technical Rescue / Safety Diver Course

Foundations of Safer Diving

Challenging and a lot to learn but a great course

MOD 3 Student