What do I need to start?

Certified as a PADI Rescue Diver or have a qualifying certification in diver rescue and accident management from another organization *. Students who meet this through a qualifying non-PADI certification need to provide proof of CPR and
first aid training within the previous two years.

Certified as a DSAT Tec Deep Diver or have a qualifying certification in deep 
decompression diving using air/enriched air from another organization *.

Students who qualify through a qualifying certification other than DSAT Tec Deep Diver must read the entire DSAT Tec Deep Diver Manual and complete the Knowledge Reviews prior to beginning the Tec Trimix Diver course.

What will I do?

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 165 feet in open water. The DSAT Tec Trimix Diver course is intended for technical divers certified as DSAT 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).

After successful completion of the DSAT Tec Trimix Diver course you'll be able to conduct gas-switch extended no-decompression dives, decompression dives and accelerated decompression dives using air and enriched air to beyond the depth of 165 feet. You'll also understand the hazards and risks involved in technical diving, as well as how to prepare for and handle reasonable foreseeable technical diving emergencies.

What will I need?

Tec Trimix Student Manual and the Tec Deep Diver Manual

Equipment Requirements?

  • Double cylinders (minimum 12 l/70 cf each, with larger preferred) with isolator manifold
  • Primary and secondary regulators, one with seven foot hose (approx.) for gas sharing, and one with SPG
  • Stage/decompression cylinders with regulator, SPG, mounting hardware and proper labeling/markings. Two per diver will be required
  • Backup decompression cylinders as appropriate and required for the environment
  • BCD and harness – redundant buoyancy control is required (double bladder BCD or dry suit if suitable for weight of equipment worn)
  • Depth gauge/computer and backup depth gauge/computer
  • Timing device and backup timing device
  • Trimix decompression information (tables/trimix computer) and backup decompression information
  • Exposure suit appropriate for environment and dive duration. (If students will use dry suits, they should be trained/experienced with their use in recreational and technical diving prior to using them for trimix training or diving.)
  • Argon dry suit inflation or other inflation system as needed (students should not inflate dry suit with trimix)
  • Weight system (if needed)
  • Jon line (if needed for current diving environments)
  • Inflatable signal tube
  • Reel
  • Lift bag (bright yellow or per local community practice preferred)
  • Knife/cutting device and backup
  • Slate
  • Backup mask (optional)
  • Compass
  • Lights (optional)
  • Drift kit (if drift decompressing)