It is the first subdivision of the full PADI Tec Deep Diver course. The PADI Tec Deep program is built upon three courses: PADI Tec 40, Tec 45, and Tec 50.
This 3 steps course allows the technical decompression diving program to be diver friendly, letting the students build their experience gradually. Each level of certification in the Tec Deep program allows the technical diving apprentice to gain experience and still enjoy the benefits of decompression.

The PADI Tec 40 course is the perfect entry point into the technical field of technical diving and provides a smooth transition from recreational diving.

Upon completion the successful candidate will be qualified to complete up to 10 minutes of non-accelerated decompression while breathing from one additional deco cylinder of up to EANx50.

What Does It Mean To Me?

You will learn to:

  • 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.

Course Schedule / Duration:

Can start the course any day, 3 days

Day 1 : Knowledge Development 1, 2 & 3 / Practical Application 1, 2 & 3 / Exam

Day 2 : Training  Dive 1, 2 & 3

Day 3 : Training Dive 4 a dive to minimum 27 meters maximum 40 meters with 50% oxygen and maximum 10 minutes decompression


  • PADI Advanced Open Water Diver (or hold a qualifying certification from another organization)
  • PADI Enriched Air Diver (or hold a qualifying certification from another organization)
  • PADI Deep Diver (or hold a qualifying certification from another organization) or 10 dives deeper than 30 meters
  • Minimum of 30 logged dives, at least 10 dives were made with EANx deeper than 18 meters
  • At least 18 years old
  • Signed medical form physician stating that you are fit to dive


2 Days boat trip (3 dives) including lunch/refreshments

Local Price: 22,000 baht

Standard tec rig rental 2000 baht for the course.

Tec Deep Diver manual (which can be used for all 3 courses): 4,000 baht