Your TDI Advanced Nitrox course with Global Dive will train you in the benefits and proper procedures for utilizing EAN 21 through to 100 (oxygen) for dives not requiring staged decompression to a max depth of 40m.

Tom at the Knights / Photograph by Ian Skipworth

When combined with the TDI Decompression Procedures course, you will learn the correct procedures for planning and executing staged decompression to a max depth of 45m using the correct equipment and configurations.

The course builds on skills learnt on the Intro To Tech course, so you will be comfortable using twins with different gas mixes in your stage tanks.

Student Pre-requisites
To enroll on this course with Global dive, we require the following prerequisites;

• Minimum 18years of age
• Minimum of 50 logged dives
• Be qualified to either SDI or PADI Advanced Open Water level.
• Be qualified to either SDI, TDI or PADI Nitrox diver level

We recommend you are also certified to Rescue Diver and have completed the TDI Intro To Tech course.
The instructor may use their discretion regarding the recommended prerequisites.

Course duration

• Classroom theory sessions 3×4 hours
• Confined water pool sessions 2×3 hours
• Open Water Dives – 6 dives with at least 2 deeper than 30m

Course Content
The following areas are covered in the combined course;

• Physics
• Physiology
• Oxygen Toxicity
• Formula work
• Equipment considerations
• Dive Computers
• tables and planning
• Gas blending considerations and typical techniques
• Deco stops
• land drills and in water drills

Required Equipment

• Twin cylinders with Isolation Manifold
• Stage cylinder
• Wing and harness with suitable lift for diving conditions
• First stage for each cylinder
• 2^nd stage per cylinder
• SPG for twins and stage cylinder
• long hose
• 2x timer
• 2x depth gauge
• Lift bag and reel
• john line
• 2x cutting devices
• suitable exposure suit for depth and environment.

Future Opportunities
Once you complete the course, you will have opportunity to practice your skills on our regular tech only trips.
These are held throughout the year with divers of all tech levels taking part.