AOWD, Nitrox, Deep and Rescue – go deeper, safer and smarter with SDI, TDI and PADI instructors at Chang Diving Center.
Already certified and ready for more? At Chang Diving Center, our advanced scuba diving courses in Koh Chang are built for divers who want to go beyond the basics – improve confidence, master new skills, and explore exciting underwater environments, from fun dives on coral reefs to deeper wreck adventures.
Start with the popular Advanced Open Water Diver (AOWD) – your next step after Open Water. Then specialize with Nitrox, Deep Diving, Navigation, and Wreck Diving Specialty Courses – expand your dive time, depth, and exploration.
Looking to take safety and teamwork to the next level? The Rescue Diver Course teaches you to prevent and manage dive emergencies – the essential step before going professional.
All training is conducted in small groups with experienced SDI, TDI, and PADI instructors, using high-quality equipment in the warm tropical waters of Koh Chang. During your course, you’ll practice at stunning local dive sites including vibrant reefs, deep pinnacles, and the famous HTMS Chang Wreck.
🌊 Upgrade your diving today – choose an advanced course in Koh Chang and unlock new skills and specialties for your underwater journey!
Haven't dived in a while? Join our 1-day Scuba Review with 2 dives, theory refresh, and instructor. Full gear & lunch included.
💸 Starting from 3,950 THB
Take your diving further in Koh Chang – 2 days, 5 adventure dives, max. 30m. Book your Advanced Open Water Course now at Chang Diving!
💸 Starting from 13,490 THB
Join our First Aid course on Koh Chang. Includes CPR, AED, and emergency response training. Ideal for divers and non-divers. 1-day certification.
💸 Starting from 4,990 THB
The Rescue Diver Course build up convidence and the ability to prvent / help in unlikely Diving situations. join today! become convident in all situations.
💸 Starting from 14,990 THB
Join our Master Scuba Diver program and reach the top recreational diving level. Includes Rescue Diver, specialties, dive packages & full agency support.
💸 Starting from 62,424 THB
Join hundreds of happy divers who've explored the underwater world of Koh Chang with us. From first-time try dives to deep wreck adventures – discover why Chang Diving is trusted since 2005. ★★★★★
Chang Diving Center offers a remarkable diving experience with exceptional instructors like Andy and Pern, who ensure a safe and enjoyable journey. Guests appreciate the knowledgeable team, excellent training, and a welcoming atmosphere. The center's well-organized trips and attention to detail, along with thoughtfully prepared onboard amenities, make it a standout choice for divers of all levels.
See reviews or write your own
“Just finished my Deep Diver and Wreck Specialty courses here with Instructor Pern – absolutely amazing experience from start to finish. Safety was always the priority, but every dive was also genuinely fun. Can't recommend Chang Diving and Instructor Pern enough.”
Read more on Google“I completed my Open Water course at Chang Diving Center and everything was perfectly organized. Great service, a very friendly and professional team, and an excellent instructor. My instructor Pern was extremely skilled, calm, and in full control at all times. Highly recommended – 10/10.”
Read more on TripAdvisor“This was my first sea dive after having qualified and the staff at Chang Diving were superb and professional ensuring my experience was the best – in fact I booked a second dive with them.”
Read more on FacebookReady to refine your skills after certification? Our advanced courses are just the start. Below you'll find practical guides and honest advice to help you dive deeper, safer, and smarter. Whether you're planning your first deep dives, curious about underwater photography, or want to understand nitrox, gas consumption, and dive planning – our scuba knowledge base covers the topics advanced divers care about. We also share straight talk on gear, logistics, and how to get the most from your dives. Comparing PADI vs SDI/TDI? Wondering about equipment and logistics on Koh Chang? Our FAQs and how-to guides have you covered. Use the links below to explore topics that will make you a more confident, capable diver.
Go beyond 18 m safely. Pressure, narcosis, gas planning – what advanced divers need to know before going deep.
Capture the underwater world. Camera basics, composition, and practical tips for divers who want better shots.
Nitrox, gas consumption, dive computers, safety stops – expand your knowledge and dive with more confidence.
Choosing agencies for advanced courses? Honest comparison of recognition, costs, and pros and cons.
Get more from every dive. Practical tips for better air consumption, buoyancy, and planning – from our instructors.
Schedules, prerequisites, what to bring, Nitrox options – answers to common questions about advanced courses on Koh Chang.
Own gear vs rental, transport, what to bring – plan your advanced course trip with our equipment and logistics FAQ.
Step-by-step: AOWD, Rescue, specialties, Master Scuba Diver. What to expect, schedules, dive sites – plan your next course.
