Technical Diving • Advanced Wreck Training • Exploration
Train for some of the Most Demanding Dives on Earth
Advanced wreck, decompression, helitrox, trimix, and technical diving training with one of the world’s most respected wreck explorers. Built for divers who want to train efficiently and want the mindset, discipline, and judgment to execute serious dives and minimize risks.
Instruction Since
1986
Decades of technical and advanced diver training.
Experience10,000+
Open Circuit, Rebreather, Surface Supplied and Submersible Dives
SpecialtyWreck
Exploration, planning, penetration, and decompression discipline.
ApproachElite
Small-group training focused on planning and execution.
Why train here
Real exploration experience… translated into serious diver training
Advanced training should build more than technical ability. John’s courses are designed to help divers sharpen their judgment, strengthen their planning, and develop the discipline needed for demanding underwater environments. This is training for divers who want to keep progressing with purpose.
Real-World Wreck Experience
Training shaped by actual exploration… not theory alone. Students learn from decades spent diving complex, overhead, and high-consequence environments.
Procedural Discipline
Trim, buoyancy, propulsion, situational awareness, planning, gas management, communication, and decision-making are built into every course. The goal is confidence through precision.
Focused, High-Level Instruction
Designed for divers ready to progress with direction. Smaller classes and direct coaching keep the training personal, practical, and demanding in the best way.
Training programs
Advanced Training for Serious Divers
My training is designed to help divers acquire new capabilities with confidence, discipline, and purpose.
Intro to Tech & Advanced Nitrox
This is a course specifically designed for recreational divers who want to become technical divers but have little to no experience using twin cylinders with a backplate and wing.
- Perfect First Step
- Learn the basics of tech diving before diving deeper
- View program details →
Advanced Wreck Diving
For divers ready to sharpen penetration techniques, situational awareness, wreck protocols, and execution under pressure.
- Advanced Wreck for Certified Deco Divers
- Combo Advanced Wreck with Helitrox, Trimix, or Deep Air
“Deep Air” and Helium Diving
Build the planning habits and in-water discipline needed for staged decompression and deeper technical profiles.
- Helitrox
- Extended Range
- Basic Trimix
About John
One of the world’s most accomplished wreck divers
John Chatterton has spent decades exploring, documenting, and diving some of the world’s most challenging shipwrecks, from U-869 and Andrea Doria to Britannic, Lusitania, and Titanic. His background includes commercial diving, deep wreck exploration, television production, and technical diving instruction through TDI/SDI.
Today, John brings that real-world experience into the classroom and the water, training divers in advanced wreck, decompression, and helium diving. His courses are built around sound judgment, disciplined planning, and the practical decision-making required for minimizing risk.
- Diving instructor since 1986
- Co-host of History Channel’s Deep Sea Detectives
- Featured in Shadow Divers and major wreck exploration documentaries
- Training technical divers in Florida and other select locations