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.
💸 Starting from 24,990 THB
🧪 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.
💸 Starting from 14,990 THB
⏱️ Decompression Procedures
Learn staged decompression diving with the TDI Decompression Procedures course. Oxygen, Nitrox, gas planning & real tech dives.
💸 Starting from 24,990 THB
🚢 Advanced Wreck
Explore Thailand's largest wrecks with the TDI Advanced Wreck course. Deco & non-deco options. Master overhead diving environments.
💸 Starting from 18,870 THB
🏆 Technical Diver
Complete your Advanced Nitrox, Deco Procedures & Wreck Diver certification in one intensive TDI tech training package.
💸 Starting from 66,990 THB
Resources for Technical Divers – Planning, Gas & Conditions
Technical programmes build on solid recreational foundations and sharp planning habits. These guides and courses support your TDI path: prerequisite bundles, gas blending for deco mixes, consumption and planning metrics, local wreck context, line skills for overhead work, redundant-system training, insurance for longer profiles, and live marine weather before you commit to complex schedules.
📋 TDI Prerequisites Bundle
Deep, wreck, and enriched-air specialties in one structured package—the fastest way to meet recreational entry requirements before advanced nitrox, deco, or wreck programmes.
🧪 Nitrox & Deco Gas Blending
Safe oxygen handling and blending procedures—understand how your technical mixes are produced and take ownership of cylinder labelling and analysis workflows.
📐 Gas Planning & Consumption
Surface consumption, reserve rules, and real-world cylinder matching—the arithmetic behind dependable run times and turnaround decisions on tech dives.
🚢 Wreck Operations on Koh Chang
Site intelligence for the HTMS Chang and regional wrecks—current, logistics, and what to expect before advanced overhead or decompression wreck training.
🪢 Reels & Guidelines
Line laying, jumps, and recovery tactics for limited visibility and penetration dives—core skills for disciplined wreck and staged-deco workflows.
🤿 Solo Diver Add-On
Formal self-reliance training with redundant gas and emergency drills—an optional but valuable layer when you want tighter margins alongside normal team diving.
🛡️ Training-Time Insurance
Specialist cover for deeper, longer profiles—review DAN options before your technical course block so logistics and medical support match your training plan.
🌤️ Marine Weather
Wind, waves, and sea state for Koh Chang—use live conditions to align boat logistics, surface intervals, and decompression commitments with realistic forecasts.
What other divers discovered
Real reviews and experiences from our guests – see what others found on their diving adventures with us!
