Technical Diving Without Compromise
Youβve mastered the fundamentals of rebreather diving.
Now itβs time to go further β longer, deeper, and with complete decompression control.
The CCR Air Diluent Decompression Diver Course is your transition from no-stop CCR diving into planned staged decompression, expanded dive duration, and significantly greater operational responsibility.
This is where rebreather diving becomes truly technical.
Delivered under the standards of Technical Diving International (TDI), and taught through the precision-focused approach of ESS-TEK, this programme develops divers who can plan, execute, and manage decompression CCR dives with discipline and confidence.
🌊 What Changes at This Level?
Up to now, your dives have stayed within no-decompression limits.
This course introduces:
β Planned staged decompression
β Extended dive time and exposure
β Advanced dive planning and gas strategy
β Structured bailout planning
β Higher workload and task management
β Greater responsibility for precision and control
You are no longer simply operating a rebreather β you are managing a complete decompression system.
🎯 What This Course Qualifies You To Do
During this programme you will learn to safely conduct:
β Planned decompression dives using air diluent
β Extended range CCR dive profiles
β Multi-stage ascent strategies
β Expanded bailout and contingency planning
β Precision oxygen exposure management
Upon successful completion, you may conduct decompression CCR dives within training limits and environmental conditions similar to those experienced during the course.
🧭 The ESS-TEK Training Philosophy
Decompression diving leaves no room for shortcuts.
At ESS-TEK, training is deliberate, methodical, and skill-driven.
We do not rush divers through progression simply to reach the next level.
We build divers who:
β Understand decompression theory β not just schedules
β Plan dives conservatively and execute them precisely
β Maintain control under increasing workload
β Respond calmly to equipment or gas problems
β Manage time, depth, and physiology simultaneously
Certification is not the objective.
Competent decompression divers are.
👤 Who This Course Is For
This course is designed for certified CCR divers who want to:
β± Extend dive duration beyond no-stop limits
π Learn structured decompression planning
π Expand operational range and capability
β Develop higher-level system management
π― Progress toward deeper technical CCR diving
If you want to move from recreational-style CCR diving into true technical discipline β this is the next step.
📋 Entry Requirements
To enrol, you must:
β Hold CCR Air Diluent Diver certification (or equivalent)
β Meet minimum logged CCR dive experience requirements
β Demonstrate comfort and control with your rebreather system
β Be physically and mentally prepared for extended technical dives
🧠 What You Will Learn
This is a major step up in both theory and practical diving.
Decompression Theory & Physiology
β Gas loading and off-gassing principles
β Oxygen exposure and CNS management
β Decompression models and conservatism
β Managing extended exposure time
Dive Planning & Execution
β Structured decompression scheduling
β Bailout gas strategy and contingency planning
β Run time discipline and ascent control
β Workload and task management underwater
Advanced CCR Operation
β Maintaining stable PPOβ during decompression
β Loop management during long exposures
β Failure recognition during ascent phases
β Equipment configuration for technical diving
🌊 In-Water Training Focus
Your dives will emphasise:
β Precision ascent control
β Stable decompression stop execution
β Gas monitoring discipline
β Task loading under time pressure
β Realistic contingency scenarios
β Efficient bailout deployment and management
Every dive reinforces procedural discipline and composure under increasing operational demand.
🛟 Critical Skill Development
You will demonstrate competence in:
β Full technical dive planning and briefing
β Structured decompression execution
β Stable buoyancy during extended stops
β PPOβ management across changing depth
β Bailout deployment and gas switching
β Emergency response during decompression
β Post-dive analysis and evaluation
This is where control, awareness, and discipline must work together continuously.
🎓 Certification Requirements
To graduate, you must:
β Successfully complete all knowledge development
β Demonstrate accurate and controlled decompression diving
β Execute dives within all planned limits and procedures
β Show sound judgement and decision-making
β Meet performance standards across all practical sessions
Competence β not minimum completion β defines successful training.
⭐ Why Train This Level With ESS-TEK?
Because decompression diving magnifies every weakness.
Our training ensures you develop:
β Methodical preparation habits
β Precision buoyancy and ascent control
β Calm decision-making under pressure
β Realistic failure management skills
β Confidence built through repetition and mastery
We do not produce divers who simply βfollow schedulesβ.
We produce divers who understand the system they are operating β and why every decision matters.
🚀 Continue Your CCR Progression
This course marks the transition into serious technical rebreather diving.
It prepares you for:
β Extended range diving
β Helium-based diluent training
β Mixed gas CCR progression
β Advanced decompression strategies
β Deeper and more complex dive missions
If youβre ready to expand your capability and accept the responsibility that comes with it β this is your next step.
Train properly.
Dive precisely.
Progress with purpose.