The DSAT Tec Trimix Diver course is intended to extend the depth range available to technical divers trained and qualified to use air, enriched air and oxygen for technical decompression dives beyond 50 metres/165 feet in open water.
As part of the DSAT TecRec instructional umbrella, the Tec Trimix Diver course reflects the training philosophies exhibited by the prerequisite Tec Deep Diver and Apprentice Tec Diver courses.

The approach is an instructional progression that directly addresses the added hazards, greater demands and challenges present in technical diving, most of which become more pronounced in the depth ranges typically associated with trimix use.

DSAT Tec Trimix Diver

Course Goals
The DSAT Tec Trimix Diver course is intended for technical divers certified as DSA Tec Deep Divers (or qualifying certification from another training organization). The course extends their depth range capabilities by training them in the use of trimix (helium, oxygen and nitrogen). It’s goals are:

  • To qualify the student to dive to 75 metres/245 feet using various trimix blends, air, enriched air and oxygen, using open circuit technical diving equipment and proceduresrequired to manage the risks involved.
  • To train the student in the cognitive and motor skills required for technical trimix diving.
  • To assure the student acknowledges and understands the hazards and risks of technical diving in general and trimix diving in particular, as well as the limits of trainingreceived in the course.
  • To train the student to prepare for and respond to reasonably foreseeable emergencies that may occur inthis type of technical diving.
  • To provide skills applicable to further training and experience in technical diving


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