Go Beyond Limits – Technical Diving in Koh Chang
At Chang Diving Center, we offer specialized TDI technical diving courses for divers ready to take scuba to the next level. From extended bottom times to deep and decompression dives, our certified instructors guide you through advanced techniques in a professional, safe, and supportive environment.
Serious Skills – Proven Systems
Learn to plan and execute dives beyond recreational limits using
twin sets, stage tanks, and sidemount configurations.
Courses include detailed theory, skills training, and open-water
sessions tailored to your pace and goals – whether you’re aiming for
Deco Procedures,
Advanced Nitrox, or
Advanced Wreck.
Train Where Conditions Are Real
Koh Chang’s
HTMS Chang wreck,
sloping reefs, and variable depths provide ideal training grounds for
real-world tech dive conditions. You’ll master gas
management, redundancy protocols, and emergency procedures – while
exploring a dynamic underwater environment.
Prerequisites – Build Your Foundation First
Technical diving requires strong recreational foundations. Before
joining, you’ll need specialties such as:
• Deep Diver → required for
Deco Procedures
• Nitrox → required for
Advanced Nitrox
• Wreck Diver → required for
Advanced Wreck
👉 Want to fast-track your training? Take our
Deep + Wreck + Nitrox Specialty Package
– the perfect foundation bundle for progressing into technical diving.
Our team will help you combine recreational and technical training if
you’re missing a prerequisite.
Available Technical Courses at Chang Diving: Intro to Tech, Advanced Nitrox, Decompression Procedures, Advanced Wreck, and our Complete Tech Diving Package.
Planning Matters
Unlike recreational dives,
technical dives and courses must be carefully planned. During high season, extended decompression dives may not always be
possible due to logistics, weather, or boat schedules. Our
instructors will work with you to adjust dive profiles and ensure
training is both safe and realistic. Flexibility and patience are key
in technical training.
🌊 Join the next level – train with Chang Diving Center and gain not only depth, but also understanding, precision, and confidence in every technical dive.

🔧 TDI Intro to Tech
The TDI Intro To Tech Course introduces technical diving to the recreational diver, how to use technical diving gear setups.

🧪 TDI Advanced Nitrox
Learn to dive with up to 100% oxygen. Extend your limits with the TDI Advanced Nitrox course at Chang Diving, Koh Chang.

⏱️ Decompression Procedures
Learn staged decompression diving with the TDI Decompression Procedures course. Oxygen, Nitrox, gas planning & real tech dives.

🚢 Advanced Wreck
Explore Thailand's largest wrecks with the TDI Advanced Wreck course. Deco & non-deco options. Master overhead diving environments.

🏆 Technical Diver
Complete your Advanced Nitrox, Deco Procedures & Wreck Diver certification in one intensive TDI tech training package.