Tec 40


The Tec 40 course introduces divers to limited decompression diving within accepted recreational depth limits. The equipment requirements are only a bit beyond those of the standard recreational kit and among other things include an additional deco cylinder. Candidates interested in continuing their tec education later can do the course in a full tec rig.

A Tec 40 diver is qualified to use decompression software and dive computers to plan and make decompression dives with not more than 10 minutes of total decompression and not deeper than 40 meters and use a single cylinder of decompression gas. The breathing gas (same for bottom and deco) may include up to 50 percent oxygen.


  • Physician's approval (medical statement) not older than one year.
  • PADI Advanced Open Water Diver or equivalent & PADI Enriched Air Diver or equivalent.
  • PADI Deep Diver or equivalent or show proof of at least 10 dives to 30 metres.
  • 30 logged dives, of which at least 10 dives were made with enriched air nitrox deeper than 18 metres.


3 days, knowledge development, 1 confined or limited open water dive and 3 open water dives.


Tec Deep Diver Manual (not included in the course fee).