TDI Decompression Procedures Diver

This course examines the theory, methods and procedures of planned stage decompression diving. This program is designed as a stand-alone course or it may be taught in conjunction with such TDI courses as Advanced Nitrox, Advanced Wreck, or Extended Range. The student should leave this course with a thorough understanding of decompression techniques and a high level of in water skill.


The objective of this course is to train divers how to plan and conduct a standard staged decompression dive not exceeding a maximum depth of 150 fsw / 45 msw unless taught in conjunction with the Extended Range Course. The most common equipment requirements, gear set-up, and decompression techniques are presented. Students are permitted to utilize Enriched Air nitrox mixes or oxygen for decompression provided the gas mix is within their current certification level.


A. Upon successful completion of this course, graduates may engage in decompression diving activities without direct supervision so long as:

1. The diving activities approximate those of training

2. The area of activities approximate those of training

3. Environmental conditions approximate those of training

B. Upon successful completion of this course, graduates are qualified to enroll in:

1. TDI Advanced Nitrox Course

2. TDI Extended Range Course

3. TDI Advanced Wreck Course

4. TDI Entry Level Trimix

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