Technical Decompression Diver


This course is to provide the diver with a working knowledge of the theory, methods, and procedures of planned staged decompression diving while using optimal breathing gas mixtures. As a part of the course students will plan and conduct standard staged decompression dives not exceeding a maximum depth of 46m (150 ft.) while using air, nitrox or helitrox if combined with that course. Equipment requirements, team requirements, NTEC configurations, decompression breathing gas mixtures (oxygen and EANx).

Upon successful completion of this course, graduates are considered competent to plan and execute dives that require staged decompression to a maximum depth of 46m (150 ft.) utilizing an optimal breathing gas as bottom gas and up to 100% oxygen for decompression without direct supervision provided the diving environment, activities, areas dived, and equipment approximate those of training.


  • Age. Minimum is 18 years by the water phase of the course.
  • Certification/Experience/Knowledge.
    • NAUI Master Scuba Diver or equivalent.
    • NAUI Introduction to Technical Diving or equivalent.
    • Proof of at least 50 logged dives with 15 logged dives on EANx.
    • The instructor is to ensure adequate student knowledge and capability before any open water training and shall use skill or other evaluations to do so. One open water dive (which does not count toward the minimum number of dives required for the course) may be used as a screening and evaluation dive. This is not required when the student’s diving proficiencies are well known to the instructor.