Advanced Nitrox Course

Wed, 12/07/2011 - 23:48 -                                Flickr

Are you a Nitrox diver? Still feeling greedy and wanting even more no-decompression time than before? Well good news, because now you can have it……….twice!!

Imagine you are swimming over the top of the Thomas Reef Canyon in Tiran at 25m and you fancy a drop inside to witness the incredible scenery within. Until now, that may have stretched the limits of your tank and NDL’s not to mention attracting a raised eyebrow from the recreational dive guide.

In Basic Nitrox you have just one tank which dictates the limits of your depth and time. But what if you could carry two or more? One for the bottom phase and then another for the shallower portions? Even better - if you’re carrying something a little ‘richer’ than recreational Nitrox then you won’t suffer the same penalties because you spent longer at depth. You can extend your bottom time and your intermediate depth times. Take a look at a dive we recently did on Shark Reef in Sharm’s Ras Mohammed National Park. We had a twin-set each of 32% Nitrox and a smaller ten-litre tank with a richer mix of 50% which we could breathe from 22m up.


And NO decompression. What’s more, we surfaced with over 100 bar left in our twin-sets after milling around in the shallows for another half an hour. Not bad for a 90 minute dive. Now who says that ‘tech diving’ is dangerous?

Questions, questions!!


  • How do I carry the extra tanks?
  • How will I know how long I can spend at the different depths?
  • Will it be safe to switch from one tank to the other?
  • Will my current diving qualifications and experiences allow me to do this kind of diving?
  • Do I have to go deeper?
  • Can I use air and Nitrox together?


Don’t worry if you’re a little rusty or had a lay-off since your earlier training. Part of our job isn’t just to teach a structured course, but to evaluate your diving and provide advice and practical tuition that stretches way beyond the printed word. And we enjoy it too! So in a way, it’s also a ‘workshop’ course where you can also brush up on the following:


  • Dive Tables from any agency
  • Diving computers
  • Personal Bouyancy and weighting
  • Finning technique and streamlining basics
  • Improving your air consumption (making your tanks last longer!)
  • Advanced underwater hand-signaling
  • Improved self-sufficiency
  • Extending your bottom time at current depths
  • Feel sleepy after dives? How to reduce tiredness by using Nitrox
  • Using Nitrox to distance you from regular air NDL limits
  • Improving your dive planning skills
  • Learn how to properly check and configure your equipment for best results
  • Dealing with underwater problems
  • Using a reel and SMB properly………and much, much more.


About the course

The TDI Advanced Nitrox Course is the next step for the Basic Nitrox diver who has a view to planning formal decompression dives or simply extending bottom times even more so than Basic Nitrox diving. For many students, the TDI Advanced Nitrox Course is normally conducted in combination with the TDI Decompression Procedures Course.

Naturally, theory and the dives themselves become a little more complex due to the introduction of more equipment plus 2-gas diving and higher limits regarding the Oxygen content of mixes used on the dives. 4 dives are required in the TDI Advanced Nitrox Course or at least 6 dives altogether if combined with the TDI Decompression Procedures Course. The dives are used to get comfortable with the twin-set and stage tank with some basic skills relating to dives where a direct nonstop ascent to the surface may no longer be an option.


Who can enroll on a TDI Advance Nitrox Course?


  • You must be a minimum age of 15 years old (18 if taught in conjunction with the TDI Deco Course)
  • You must have a minimum certification as a TDI Basic Nitrox Diver or equivalent
  • You must have a minimum of 25 logged dives.
  • You should possess the relevant level of health and fitness for scuba diving
  • The course is 3 days in duration (5 if taught in conjunction with the TDI Deco Procedures Course)
  • The maximum depth of the course is 40m