Advanced Trimix Diver
The deepest open-circuit certification we teach — hypoxic trimix to 100 metres.
About The Course
Past about 60 metres even a normoxic mix runs out of room: you need a bottom gas with so little oxygen it cannot safely be breathed at the surface. Advanced Trimix is the certification for exactly that — full hypoxic mixes, travel gases, and the long, disciplined ascents that bring you back.
This is the deepest open-circuit training we offer, and the closest you can get to the diving that made Ahmed Gabr the deepest scuba diver in history. Small teams, long run-times, and nothing rushed. All helium and trimix fills are included in the course price.
What You'll Learn
- Full hypoxic mixes and why they are used
- Travel gas and multi-gas switching
- Deep gas planning and consumption at depth
- Long staged ascents and run-time discipline
- Managing gas density and CO₂ at depth
- Deep-team roles, support and contingency planning
Prerequisites
- Minimum age 18
- TDI Extended Range or TDI Trimix (or equivalent)
- 100 logged dives, 25 of them deeper than 30 m
- Logged experience with double cylinders and any other unfamiliar equipment, such as a dry suit
Minimums from the TDI Standards and Procedures (2026). Equivalent certifications from other agencies are accepted — we confirm yours with you before you book.
What's Included
- Instruction in small teams
- All helium and trimix fills included
- Stage / deco cylinders and gas
- Deep-dive planning and support
- Certification processing
Course Price
Per diver, and your certification and all helium / trimix fills are included. Equipment rental and boat fees are separate unless bundled into a package. Ahmed Gabr Signature is the same course, taught personally by Ahmed Gabr.
Your Next Step
Train Advanced Trimix With A World-Record Team
Tell us your certification level and goals — we'll confirm prerequisites, dates and the right pathway for you. No obligation.