The intent of the TDI Trimix Diver program is to provide divers with the training necessary to
independently plan and conduct two-gas switch, multiple-stop decompression dives to depths of up to 60 meters / 200 feet, using specialized diving equipment and procedures with an equally-qualified dive buddy. You will earn the TDI Trimix Diver certification after completing this program.
Course prerequisites:
Minimum age 18
Minimum certification of TDI Advanced Nitrox AND Decompression Procedures Diver, or equivalent
Proof of 100 logged dives
What you can expect to learn:
Advanced decompression dive planning including:
Gas planning based on equivalent narcotic depths, nitrogen and helium absorption and elimination, CNS and OUT limits, Isobaric Counter diffusion, volume requirements, etc.
Decompression gas choices
Tables vs. personal dive computers
Emergency and contingency planning (equipment failure, omitted decompression, etc)
Decompression diving procedures
Equipment selection
Pre-dive checks and drills
Stress analysis and mitigation
Following a decompression schedule
Gas switching
Team awareness and communication
SMB/lift bag deployment
Proper trim, buoyancy and finning techniques
Management of multiple decompression/stage cylinders