TDI Advanced Nitrox

Course Overview

Over two days you will lean about using nitrox mixes from 22% to 100% covering in more detail and developing on from your basic nitrox theory. The course is an ideal first step for preparing to move forward in technical diving, cave and advanced wreck. Or simply to add to your recreational diving options.

What’s Involved

There will be 4 nitrox dives with a minimum of 100 minutes of bottom time. You will build on diving skills to date. You will learn about nitrox blending, best mixes, managing oxygen exposure and gas consumption calculations.

Course Skills

Efficient and safe utilisation of nitrox mixes up to 100%. Buoyancy and trim, propulsion techniques, cylinder and stage set-up and rigging, gas management, thinking like a  technical diver.

Why Do the Course?

This course will appeal to experienced recreational divers who are now seeking to move into the technical diving world or to add options to their longer or deeper recreational dives. It prepares you to take further technical training such as decompression procedures or tec 40/45/50 courses. Options to combine this course with decompression procedures are available.

What’s Included

The course fee covers instructional time, manual, use of facilities including pool. Students are expected to pay any boat costs and accomodation 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 plus a spare mask, timing device, a dsmb, a spool/reel with 30m of line. A backmount twinset or sidemount BCD, we recommend Apeks, Razor and X-Deep systems. These may be rented for the duration of the course.

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Nitrox diver or equivalent, minimum of 25 dives, 15 years old

Student to Instructor Ratio

3:1 (maximum)

No. Sessions

3 x theory; practical kit setup session; 4 x open water dives


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

Related Courses


Decompression Procedures

Extended Range

TEC 40, 45 & 50

Foundations of Safer Diving

I’ve been diving for over 20 years, including instructing and Matt was able to bring my diving skills and knowledge to a completely new level

Kirk K, Kerry

Rec Diver