RAID Normoxic Decompression Diver (60m)

Develop True Deep Diving Capability with Full Normoxic Trimix Training

Instant access to RAID online learning. Begin your progression immediately.

Why Choose The RAID Normoxic Decompression Diver (60m Trimix) Course?

The RAID Normoxic Decompression Diver (60m Trimix) course is your transition into true deep mixed-gas diving. Using normoxic trimix, you achieve significantly reduced narcosis, improved clarity, and safer gas density at depths where air and limited trimix reach their performance limits.

This course is designed for divers committed to structured deep exploration, advanced decompression control, and the disciplined operational mindset required at 60 metres. You will refine every aspect of your buoyancy, trim, gas planning, ascent stability, and team awareness while managing full mixed-gas decompression profiles.

The 60m normoxic qualification is the gateway to hypoxic trimix, expedition-level technical diving, and advanced overhead environments.

What This Course Helps You Achieve

  • Competent, controlled mixed-gas diving to 60m / 200ft

  • Dramatically reduced narcosis and improved cognitive clarity at depth

  • Mastery of multi-stage, multi-gas decompression plans

  • Advanced ascent and decompression discipline

  • Skill development required for hypoxic trimix training

  • Increased situational awareness and safety margins at depth

What You'll Learn In The Normoxic Decompression Diver Course

You will develop the skills, knowledge, and performance capability required to operate safely and confidently at deeper mixed-gas depths. Training includes:

  • Planning and executing normoxic trimix dives to 60m

  • Selecting appropriate trimix blends for depth, conditions, and task loading

  • Managing END, gas density, and thermal considerations

  • Conducting extended multi-stage decompression schedules

  • Emergency planning for deep mixed-gas failures and bailout

  • Advanced ascent discipline, including micro-stop control

  • Stage cylinder handling and precise gas-switch execution

  • Team communication and situational awareness at 60m

This course builds your competence, confidence, and situational awareness as a new OC Trimix diver.

Normoxic Decompression Diver (60m Trimix) Course At A Glance

  • Max Depth: 60 metres (200 feet)

  • Breathing Gas: Normoxic Trimix (helium + O₂ + nitrogen)

  • Deco Gases: Up to 2 (up to 100% O₂)

  • Mandatory Decompression: Yes

  • Configuration: Twinset or Sidemount

  • Training Environment: Open water, deep-water conditions

  • Program Length: Online academics + confined water + minimum open-water requirements

  • Progression: 50m Advanced Decompression → 60m Normoxic Trimix → Hypoxic Trimix

RAID Normoxic Deco 60 Prerequisites

To enrol in the RAID Rebreather Diver course, you must meet the following requirements:

  • Be 18 years or older

  • Be certified as a RAID Advanced Decompression Diver (50m Trimix) or equivalent

  • Hold RAID Nitrox certification

  • Have logged at least 70 dives, including:

    • 10 dives deeper than 30m

    • Multiple trimix decompression dives

  • Complete all RAID registration, medical, and documentation requirements

Your instructor may require a skills evaluation depending on recency and experience.

Mastering the Core Normoxic Trimix Skills

Training is structured into three tightly engineered phases to ensure complete mastery before progressing to hypoxic training.

Step 1: Online Learning

Complete all RAID academic modules covering:

  • Normoxic trimix theory

  • END calculations & gas density limits

  • Decompression modelling & deep-stop strategies

  • Safe PO₂, OTU, and CNS exposure limits

  • Advanced gas planning & emergency options

  • Managing stress, task loading, and team procedures at depth

Step 2: In-Water Skills

You will complete a skills-focused confined session to master:

  • Full stage-cylinder setup for multiple decompression gases

  • Precision gas-switch protocols

  • Stability drills under task loading

  • Valve drills (twinset or sidemount)

  • SMB deployments with deep-water simulation

  • Skill refinement for long, controlled decompression holds

Step 3: Open Water Dives

Your open-water training includes multiple staged decompression dives with:

  • Multiple mixed-gas deco dives to 60m

  • Realistic decompression profiles with extended holds

  • Team situational awareness and deep communication

  • Simulated emergency exercises at depth

  • Full ascent discipline with accurate stop timing

  • Multi-gas switch execution under pressure

  • Deco management using trimix principles

Instant access to your online learning, course preparation modules. Begin training immediately.

Certification Limits & Operational Protocols

  • Conduct planned decompression dives to 45m

  • Use light trimix as the primary gas

  • Use up to two decompression gases, including 100% oxygen

  • Execute multi-level decompression schedules

  • Plan and manage extended gas strategies for 45m diving

Progression Pathway

The 45m Limited Trimix certification is the gateway to deeper, more capable technical diver qualifications:
➜ Advanced Decompression Diver (50m Trimix)

➜ Normoxic Trimix Diver (60m)

➜ Hypoxic Trimix Diver (80–100m)

➜ Full expedition-level mixed gas pathways

Train With a RAID CCR Trainer & Examiner

Your instructor trains you directly on the same configuration dive gear as you'll be diving. All confined and open-water sessions are closely supervised for safety, mastery, and confidence-building. Stuart’s instruction blends disciplined skill development with the confidence-building mentorship required for advanced technical exploration.

Why Train With Stuart Girdler?

  • Proven technical training experience across OC & CCR

  • Deep military and expedition diving knowledge

  • Mastery in both twinset and sidemount platforms

  • Precision-focused training and small instructor ratios

  • Real-world decompression, bailout, and mixed-gas expertise

  • Over 30 years of professional diving experience

How To Begin Your Training

You can begin immediately with RAID Free Learning, gaining instant access to online learning modules, course preparation materials, trimix fundamentals, extended-range decompression theory. Ready to begin your trimix journey?

Instant access to your online learning, course preparation modules. Begin training immediately.

OPEN CIRCUIT TEC

RAID OC Tec courses focus on advanced open-circuit diving skills, including gas planning, decompression, and deep diving techniques for extended range exploration.

CLOSED CIRCUIT TEC

RAID CCR Tec training introduces divers to closed-circuit rebreathers, offering precision, efficiency, and longer dive times through cutting-edge technology

@ 2026 Copyright Diving Disciplines. All rights reserved.

Digital Marketing & Web Design by Alex Varnals