Tec 40

Tec 40 Course (2-3 days)

If you're interested in technical diving, but haven't yet met the prerequisites for the PADI Tec 50 Diver course or PADI Tec 45 course, you can consider enrolling onto the PADI Tec 40 course. It is the first subdivision of the full PADI Tec Deep Diver course and consists of the first four dives. Because you can do one of  these dives in confined water (such as a swimming pool min 2.5m), many divers start the Tec 40 courses in the winter months, ready to continue in open water when spring arrives.

What You Learn

  • Use decompression software and dive computers to plan and make decompression dives with no more than 10 minutes of total decompression and not deeper than 40 metres/130 feet.
  • Use a single cylinder of decompression gas with up to 50 percent oxygen (EANx50) to add conservatism to the required decompression.

Since it's part of the course, your PADI Tec 40 course training, credits towards the PADI Tec 45  and Tec 50 courses.

The Scuba Gear You'll Use

You can use standard recreational scuba equipment, with some minor additions to enhance your ability to deal with tec diving conditions. Or go straight into Twinset rigs.

The Learning Materials You Need

You'll use the Tec Deep Diver Crew-Pak, which introduces you to;

  • Tec diving lingo
  • Emergency procedures
  • Decompression and stage cylinder handling
  • Gas planning

The pack includes a manual, dive planning checklist and dive planning slate. The optional Equipment Set-up and Key Skills video on DVD is a great tool to help you practice at home in between your tec diving adventures. You'll continue to use the Tec Deep Crew-Pak through Tec 50.

Programme Sequence

The Tec 40 course consists of three Knowledge Development Sections, three practical application sessions and four training dives.



The fully integrated instructional sequence for the Tec 40 course is;

  • Knowledge Development One
  • Practical Application One
  • Dive One - Depth 2.5 m -10m

  • Knowledge Development Two
  • Practical Application Two
  • Dive Two - Depth 10m-18m

  • Knowledge Development Three
  • Practical Application Three
  • Exam
  • Dive Three - Depth 15m-27m

  • Dive Four - Depth 26m-40m


   - 10 dives must be on enriched air

   - 12 dives must be deeper than 18 metres/60 feet

   -  6 dives must be deeper than 30 metres/100 feet