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
Emergency procedures (equipment failures, catastrophic gas loss, omitted decompression, navigational errors, injured/unconscious diver, etc)