TDI CCR Mixed Gas Diver Course

Deep Trimix Rebreather Diving — Signature Scuba, Rancho Cucamonga

Technical Mastery Below 130 Feet Starts Here

The TDI CCR Mixed Gas Diver Course is your certification to conduct deep closed-circuit rebreather dives using helium-based trimix as both a diluent and decompression gas. This elite-level course trains you to safely execute staged decompression dives in the 130 to 200 foot (40–60 meter) range, while managing the complexities of deep diving on a rebreather.

At Signature Scuba, we provide unit-specific training on approved CCR systems (e.g., JJ-CCR, Prism 2, Poseidon) with a focus on mission-based planning, real-world execution, and the technical discipline required to explore safely at depth.

What You’ll Learn:

Dive planning and execution with normoxic and hypoxic trimix

Managing helium-based gas mixtures to reduce narcosis and gas density

CNS & OTU tracking, END calculations, and high-pressure nervous syndrome (HPNS) awareness

Advanced PO? setpoint strategies and decompression planning

Redundant bailout systems and multi-stage deco configurations

Unit-specific deep dive protocols and emergency procedures

Planning and executing CCR dives from 130 ft (40 m) to 200 ft (60 m)

Course Includes:

TDI CCR Mixed Gas eLearning

6+ deep CCR training dives between 130–200 ft

Unit-specific configuration and in-depth pre-dive checklist training

Hands-on helium dive planning with deco software (DecoPlanner, Subsurface, etc.)

Gas analysis, runtime profiling, and bailout drills

Real-world training scenarios tailored to California conditions

Who This Course Is For:

Certified TDI CCR Helitrox Decompression Divers

CCR divers seeking to exceed 130 ft while controlling narcosis and gas density

Technical divers aiming for deep wrecks, caves, or expedition-level objectives

Dive professionals pursuing TDI Advanced Mixed Gas, CCR Cave, or project support roles

Anyone serious about deep CCR exploration with full decompression capability

Why Signature Scuba?

At Signature Scuba in Rancho Cucamonga, we provide deep rebreather instruction rooted in real-world diving. Our instructors have extensive CCR and mixed gas experience in both local and expedition environments. You’ll train on your own or rental unit, build confidence in both theory and field execution, and gain the skills to dive responsibly at serious depths.

Training sites include SoCal wrecks, boats, and deep water sites across Orange County, Riverside, and the Inland Empire.

Go Deep with Skill, Not Luck

Deep rebreather diving is not about bravado—it's about meticulous planning, safe practices, and advanced gas knowledge. With this certification, you’ll be ready to lead serious dives up to 200 feet, equipped with the mindset and skills to return safely—every time.

Contact Signature Scuba today to schedule your CCR Mixed Gas Diver course orientation.