There are a number of different technical scuba diving courses that one can take part in and these include for example: Nitrox, Advanced Nitrox, Decompression Procedures, Extended Range, Entry Trimix, Advanced Trimix, Advanced Wreck, Overhead Environment/Cavern, and Introductory Cave, Cave, Nitrox Gas Blender as well as a few others. Though one cannot describe each and every one of these courses in detail a few important technical scuba diving courses may be mentioned briefly.
Nitrox is an entry level certification course that the recreational diver may want to undergo when he or she wants to use enriched air nitrox (EAN) as a breathing gas. The main aim of this course is to teach divers about the advantages, dangers as well as proper procedures regarding use of nitrox mixes from 22% to 40% oxygen content.
For the advanced Nitrox technical scuba diving course, the diver will examine using EAN 21 through 100% (oxygen) for best mixes to a depth of 130fsw/40msw. The aim of this course is to teach the diver how to use EAN 21 through 100% (oxygen) for dives that do not require staged decompression as well as to inform him or her about benefits, and pitfalls regarding the same.
Another technical scuba diving course is Decompression Procedures, which teaches the theory, methodology as well as procedures of planned stage decompression diving. The aim of this course is to teach the diver how to plan as well as conduct a standard staged decompression dive that does not involve diving to depths exceeding 150fsw/45msw unless and until it is taught together with Advanced Nitrox, Extended Range or Advanced Wreck Courses. Mostly, the equipment required, techniques of decompression as well as mixtures of decompression such as oxygen and nitrox, are taught in this course.
The Extended Range course gives the necessary training as well experience that is required off a diver to ably utilize air for dives that are of depths of 180fsw/55msw and that require staged decompression by also using nitrox mixtures as well as oxygen during decompression.
The Entry Level Trimix is a technical scuba diving course which gives the diver training that is required in order to adeptly and safely make use of breathing gasses that contain helium for dives that need staged decompression, using nitrox and/or oxygen mixtures during decompression to depths not exceeding 200fsw/60msw.
And, the Advanced Level Trimix technical scuba diving course imparts the training necessary to expertly as well as carefully use breathing gases that contain helium for dives that need staged decompression by using nitrox and/or oxygen mixtures during decompression to depths not exceeding 300fsw/100msw.