Technical Diving Without Compromise
This is the highest operational level of recreationally available rebreather training.
The CCR Advanced Mixed Gas Diver Course represents the culmination of structured closed circuit rebreather development β preparing divers to plan and execute extreme depth mixed-gas CCR dives with complex decompression and full mission-level responsibility.
Everything you have learned β system control, gas strategy, decompression discipline, and failure management β now operates at the highest level of precision.
Delivered under the standards of Technical Diving International (TDI), and taught through the uncompromising training approach of ESS-TEK, this programme develops divers capable of conducting the most demanding CCR dives safely, methodically, and with complete situational control.
Training is conducted on professional expedition-capable systems including the Inspiration Rebreather, designed for serious deep technical operations.
This is not simply deeper diving.
This is full technical mastery of a life-support system in extreme environments.
🌊 What Defines Advanced Mixed Gas CCR Diving?
At this level, dives are no longer recreational in nature β they are fully planned technical missions requiring precision, redundancy, and disciplined execution.
Advanced mixed gas training introduces:
β Very deep helium-based dive profiles
β Extensive staged decompression obligations
β Multiple bailout and contingency layers
β Complex gas logistics and planning
β Long exposure times and high workload management
β Precision physiological monitoring
β Complete system awareness at all times
Every decision affects outcome.
Every action must be deliberate.
🎯 What This Course Qualifies You To Do
During this programme you will learn to safely conduct:
β Deep mixed-gas CCR dives to advanced technical depths
β Complex decompression profiles with extended runtime
β Multi-stage bailout and contingency planning
β Expedition-level dive preparation and execution
β High-precision ascent and decompression management
Upon successful completion, you may plan and execute advanced mixed-gas CCR dives within training limits and environmental conditions similar to those experienced during the course.
🧭 The ESS-TEK Training Philosophy
Depth does not create competence β training does.
At ESS-TEK, this level is taught with absolute focus on discipline, precision, and judgement.
We develop divers who:
β Think ahead of the dive, not just during it
β Maintain calm control under extreme task loading
β Understand the consequences of every decision
β Manage multiple systems simultaneously
β Execute complex dives with consistency and accuracy
This level is earned through demonstrated capability β never rushed.
👤 Who This Course Is For
This course is designed for highly experienced CCR mixed-gas divers who want to:
π Conduct very deep technical dives
π§ Operate with maximum clarity and control at depth
π Execute complex decompression strategies
β Master full expedition-level CCR planning
π― Reach the highest level of rebreather diving proficiency
This is for divers committed to technical excellence β not simply depth.
📋 Entry Requirements
To enrol, you must:
β Hold CCR Mixed Gas Diver certification (or equivalent)
β Demonstrate advanced decompression control and dive discipline
β Have substantial logged deep CCR experience
β Show readiness for extreme task loading and responsibility
β Demonstrate mature judgement and technical awareness
This course assumes mastery of all previous CCR operational skills.
🧠 What You Will Learn
This programme develops the highest level of CCR technical knowledge and execution.
Advanced Deep Diving Physiology
β Gas behaviour under extreme pressure
β Long-duration oxygen exposure management
β Thermal and workload considerations
β Decompression stress and risk management
Expedition-Level Dive Planning
β Complex multi-gas dive design
β Layered contingency planning
β Extensive bailout logistics
β Runtime management for long technical dives
Full System Mastery
β Precision PPOβ control across extreme depth ranges
β Loop management during long decompression phases
β Equipment configuration for deep technical operations
β Failure recognition and response under maximum workload
🌊 In-Water Training Focus
Your dives will emphasise:
β Precision control at significant depth
β Stable ascent across long decompression schedules
β Continuous situational awareness
β Multi-layer contingency management
β Accurate execution under sustained workload
β Calm, disciplined response to complex scenarios
Every dive is conducted as a structured technical mission.
🛟 Critical Skill Development
You will demonstrate competence in:
β Full mission planning and execution
β Complex multi-stage bailout deployment
β Advanced decompression management
β Precision buoyancy across extended profiles
β System monitoring under sustained exposure
β Emergency management in deep environments
β Post-dive performance analysis and evaluation
This level requires consistent, controlled, repeatable execution.
🎓 Certification Requirements
To graduate, you must:
β Successfully complete all advanced knowledge development
β Plan and execute deep mixed-gas CCR dives correctly
β Maintain strict decompression accuracy
β Demonstrate mature judgement at all times
β Meet all performance standards across demanding dive scenarios
Certification reflects readiness for the highest level of CCR diving.
⭐ Why Train This Level With ESS-TEK?
Advanced mixed gas diving demands absolute reliability β from both diver and system.
Our training ensures you develop:
β Structured mission-level dive planning discipline
β Composure in extreme environments
β Precision system control under sustained workload
β Full understanding of deep technical gas logistics
β True operational confidence at advanced depth
We train divers to operate deliberately, predictably, and correctly β even in the most demanding conditions.
🚀 The Pinnacle of CCR Training
This is the highest level of structured rebreather diver development.
It represents:
β Complete technical CCR capability
β Maximum operational responsibility
β Full system mastery
β Deep technical exploration readiness
If you are prepared for the demands of extreme technical diving β this is the final step in the training pathway.
Train without compromise.
Dive with precision.
Operate at the highest level.