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What is the DSAT Tec 50 Course? 

Once you have completed the requirements from the Tec 40 and Tec 45 course, the Tec 50 (formally Tec Deep Course) consists of five more Practical Applications, and five more Training Dives. Using twin manifolded tanks (or sidemount) for the back gas plus two stage tanks or two more sidemount tanks with up to 100% oxygen for decompression. Tec Deep training takes a further three days to complete. Theory is home-study or classroom with workbook with six Knowledge Reviews and a Final Exam to complete. 

Most people learn technical diving in backmount (both cylinders located on back), if you want to take this course and in sidemount (one cylinder located separately under each arm) and find out why side mount configuration is superior. Visit for more information. 

What do I need to start?

Pre-requisites for the course are:

  • PADI Advanced Open Water Diver (or equivalent)
  • PADI Rescue Diver (or equivalent)
  • PADI Enriched Air Diver (or equivalent)
  • PADI Deep Diver (or equivalent)
  • PADI Tec 45 certification (or equivalent)
  • Have a minimum of 100 logged dives of which 20 must be enriched air dives, 25 dives must be deeper than 18 metres/60 feet and at least 15 dives must be deeper than 30 metres/100 feet
  • Minimum age: 18 years old
  • Obtain a dive medical signed by a physician (prior to start of any technical course) 
What will I Do? 

The course will qualify you to make gas switch, extended no decompression dives, decompression stop dives and accelerated decompression dives using air, Nitrox or up to 100% oxygen to 50m / 165ft, using technical diving equipment and procedures.

If you can not commit to the full Tec 50 course, then the Tec 40 and Tec 45 are great stopping points for you. 

What will I need?

Tec Deep Student Crew-Pak, which includes student manual, planning slate and checklist slate (need a few weeks before the start of the Course to allow you time to complete all Knowledge Reviews etc)

For more indepth information please contact me

Calendar shows where I will be and duration of my time there. If I am in your area and you want to join a course, contact me for locations. If you see any dates free and would like me to visit your dive centre or location, drop me an email with location, course interest and possible dates.
Want to know more about how your cylinders weight changes during a dive..? Video has information on what effects the weight change and has tests showing cylinders at different air pressures during dives in salt and fresh water. It displays whether they have Negative, Neutral or Positive Buoyancy. More details found at
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