TDI Advanced Trimix

TDI Advanced Trimix

The TDI Advanced Trimix Diver Course is the top level of training for open circuit divers wishing to dive to depths as deep as 100 metres utilizing hypoxic levels of oxygen (below 17 percent). This course is perhaps one of the most informative and challenging of all of the TDI open circuit courses. Upon completion, you will be among some of the most elite divers, capable of doing and seeing more while diving than any other divers out there.

How do I begin?

You start with the training materials. We will provide you with and TDI Advanced Trimix Diver manual so you can do all your studying at home before you come to the dive centre.

What's in the course?

  • Advanced decompression dive planning including:
  • Decompression diving procedures
  • Proper trim, buoyancy and fining techniques
  • Management of multiple (minimum of 3) decompression/stage cylinders
  • Emergency procedures (equipment failures, catastrophic gas loss, omitted decompression, navigational errors, injured/unconscious diver, etc)
  • Equipment considerations, cylinder labelling, analysing Trimix, Nitrox and mixes, and gas blending procedures

How long does it take?

The TDI Advanced Trimix course takes 4 days. If you have not dived with us before, then we will require you to do an additional check dive with us.

What qualifications do I need?

The TDI Extended Range or TDI Trimix qualification or equivalent and proof of 100 dives (25 of which have to be below 30m) are the pre-requisites for this course.

The minimum age of enrolment on this programme is 18yrs.

You will need to fill out a self certification medical statement. If you have any medical conditions you think may prevent you from scuba diving please feel free to contact us and we will try to be of assistance.

What's next?

Celebrate your TDI Advanced Trimix qualification by spending the rest of the week diving the Zenobia wreck, and start thinking about all the money you would save diving Trimix on Closed Circuit Rebreather.


TDI Advanced Trimix course is 4 dives and costs €1350.00 including gases, cylinders and boat (manual, certification and kit hire is not included).