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.

Related Pages

• Sidemount BCD
• Shearwater Predator Computer
• Scubapro Jet Fin
• Sea and Sea YS series Strobes

When I signed up to do these two TDI (Technical diving International) courses conjointly, I was expecting to spend days learning about 100 % oxygen, incorporating lots of redundancy into Dive Plans,

Richie and Pete / Photograph by Rachel Agnew

repeating alot of Dive Physiology in the classroom and doing six dives showing that you can maintain good buoyancy and on each dive deploying a marker buoy (which I had secretly hated doing).

I had heard mixed reports from people who’s advice I respected, telling me that the course was very hard to very simple and not worth doing.

Simply put this was the best course I have done and some of the most rewarding dives I have had without a camera.

Pete’s style of teaching takes you past the scope of the course. It’s not a case of learning something that you can repeat in an exam, but he helped to give a true understanding of the material which led to answering questions that had been in the back of my mind for along time that I did not know how
to ask.

As a photographer I pride myself on good buoyancy, but in the water Pete pushed my skills past a level I thought I could reach, The dives were by know means easy but man were they rewarding, leaving me a much more confident and conscientious diver.

This course may not be suited for everyone, but I would certainly recommend it to everyone who is ready to take the step into Technical Diving or looking for a challenge that will improve their diving skills 100%.

Related Pages

• Global Dive’s Poor Knights Liveaboard Weekend & Advanced Open Water
• PADI Rescue Diver
• PADI Divemaster
• PADI Advanced Open Water Diver