Technical Diving Without Compromise
You’ve learned to manage decompression on a rebreather.
Now it’s time to optimise the gas you breathe while doing it.
The CCR Helitrox Diver Course introduces helium-based diluent mixtures to improve gas performance, reduce narcosis, and enhance breathing efficiency during decompression diving.
This programme marks your transition from air-based decompression diving to helium-assisted CCR operations — a major step toward deeper, clearer, and more controlled technical diving.
Delivered under the standards of Technical Diving International (TDI), and taught through the precision-focused approach of ESS-TEK, this course develops divers who understand how gas selection directly influences performance, safety, and dive outcome.
🌊 What Makes Helitrox Different?
Air works — but it has limits.
Adding helium to your diluent changes the way you experience depth and manage decompression.
Helitrox training introduces:
✔ Reduced nitrogen narcosis
✔ Lower gas density and easier breathing
✔ Improved clarity and task performance at depth
✔ More efficient decompression strategies
✔ Advanced gas planning and logistics
You are no longer just managing decompression — you are managing gas composition as a performance tool.
🎯 What This Course Qualifies You To Do
During this programme you will learn to safely conduct:
✔ Planned decompression dives using helium-based diluent mixtures
✔ Extended depth CCR dives with reduced narcosis
✔ Advanced gas planning and selection
✔ Multi-gas decompression strategies
✔ Structured bailout planning for helium environments
Upon successful completion, you may conduct Helitrox CCR dives within training limits and environmental conditions similar to those experienced during the course.
🧭 The ESS-TEK Training Philosophy
Introducing helium increases both capability and responsibility.
At ESS-TEK, training focuses on precision, awareness, and control — not just new gas mixtures.
We develop divers who:
✔ Understand how helium changes physiology and performance
✔ Plan dives conservatively and execute them precisely
✔ Maintain mental clarity and task discipline at depth
✔ Manage multiple gases confidently
✔ Respond calmly to equipment or decompression challenges
Technical progression only happens when skill and judgement are fully established.
👤 Who This Course Is For
This course is designed for certified CCR decompression divers who want to:
🧠Reduce narcosis and improve cognitive clarity
🌬 Improve breathing efficiency at depth
📊 Expand gas strategy and dive planning capability
âš™ Prepare for deeper mixed-gas CCR training
🎯 Increase operational safety and performance
If you want greater control, greater comfort, and greater capability — Helitrox is the next step.
📋 Entry Requirements
To enrol, you must:
✔ Hold CCR Air Diluent Decompression Diver certification (or equivalent)
✔ Demonstrate strong CCR buoyancy and decompression control
✔ Meet minimum logged CCR dive experience requirements
✔ Be prepared for increased planning complexity and gas management
🧠 What You Will Learn
This course develops both technical understanding and practical execution.
Gas Strategy & Physiology
✔ Effects of helium in breathing mixtures
✔ Narcosis reduction and cognitive performance
✔ Gas density and work of breathing
✔ Oxygen exposure and decompression implications
Dive Planning & Logistics
✔ Helium-based diluent planning
✔ Multi-gas decompression strategy
✔ Bailout gas requirements for helium dives
✔ Equipment and configuration considerations
Advanced CCR Operation
✔ PPO₂ management with helium diluent
✔ Loop control during deeper exposures
✔ Gas monitoring and switching discipline
✔ Managing increased task loading
🌊 In-Water Training Focus
Your dives will emphasise:
✔ Stable buoyancy and control at increased depth
✔ Clear task execution with reduced narcosis
✔ Precise decompression stop management
✔ Multi-gas awareness and monitoring
✔ Controlled ascent with structured decompression
✔ Realistic planning and execution of helium-based dives
Training develops comfort, clarity, and control in helium-assisted environments.
🛟 Critical Skill Development
You will demonstrate competence in:
✔ Helium-based dive planning and briefing
✔ Gas analysis and verification procedures
✔ Stable PPO₂ control during decompression
✔ Bailout deployment in helium dive profiles
✔ Multi-gas decompression execution
✔ Emergency management with expanded gas logistics
✔ Post-dive analysis and performance review
Helium improves performance — but only when managed correctly.
🎓 Certification Requirements
To graduate, you must:
✔ Successfully complete all knowledge development
✔ Plan and execute Helitrox CCR dives correctly
✔ Demonstrate accurate decompression discipline
✔ Show sound judgement and decision-making
✔ Meet performance standards across all practical sessions
Competence and control define successful progression.
⭐ Why Train This Level With ESS-TEK?
Helium changes how dives feel — and how they must be managed.
Our training ensures you develop:
✔ Structured gas planning discipline
✔ Clear thinking under increased depth exposure
✔ Confidence managing multiple breathing strategies
✔ Calm and controlled decompression execution
✔ True readiness for deeper mixed-gas diving
We train divers to understand the purpose of every gas they carry and every decision they make.
🚀 Continue Your CCR Progression
Helitrox is a major step toward full mixed-gas technical diving.
It prepares you for:
✔ Deeper CCR operations
✔ Expanded helium-based gas strategies
✔ Full mixed-gas rebreather training
✔ Advanced decompression planning
✔ High-complexity technical dive missions
If you are ready to experience deeper diving with greater clarity and control — this is your next step.
Train precisely.
Manage gas intelligently.
Progress with purpose.