Learn wreck diving with professional SDI, TDI and PADI instructors at Chang Diving Koh Chang.
The Wreck Diver Course Koh Chang is your gateway to exploring Thailand's most spectacular underwater shipwrecks through limited penetration training. Whether you're diving the famous HTMS Chang wreck at 31 meters or the deeper Koho Maru 5 at 42 meters, this specialty course teaches you the essential skills to safely navigate and explore overhead environments while respecting the boundaries of recreational wreck diving.
Explore our full range of scuba specialties on Koh Chang — then come back here to book wreck-focused training.
Our wreck diving certification covers 3-4 training dives in the Mu Koh Chang National Marine Park, where you'll learn critical skills including wreck navigation and mapping, proper use of reels and guidelines, penetration planning using the formula (Max depth = Entry depth + Penetration distance), hazard identification in overhead environments, and safe exit procedures. Each dive is carefully structured to build your confidence in wreck environments, from external surveys to controlled limited penetration dives with direct access to open water.
At Chang Diving, our SDI, TDI, and PADI certified instructors specialize in wreck diving and overhead environment training. Training in small groups ensures you master proper reel techniques, buoyancy control in confined spaces, and emergency procedures before entering any wreck structure. Koh Chang offers ideal wreck diving conditions with the HTMS Chang (Thailand's largest deliberately sunk wreck), Koho Maru 5 (deep WW2 Japanese supply vessel), and multiple artificial reef sites—all accessible year-round with best visibility November-April. The Wreck Diver specialty is also an excellent foundation for technical diving courses like Full Cave or Trimix if you wish to pursue advanced overhead training.
→ See how specialty courses work at Chang Diving
Online theory access included (PADI PDF Manual or SDI eLearning)
Not sure which path fits you best? → Learn more about specialty courses at Chang Diving
⚠️ About Limited Penetration:
Your maximum penetration distance into a wreck is limited by your
current certification depth. Example: AOWD certified (30 m) → Entry
at 25 m → Only 5 meters of penetration allowed. Read our
full guide to HTMS Chang wreck penetration rules.
💡 Understanding wreck diving theory will enhance your course experience!
Join our fun dives and explore vibrant coral reefs, fascinating critters, and majestic marine life — including the legendary HTMS Chang Wreck.
Use our dive site map to plan your adventure or dive deeper into our Marine Life Guide and see what awaits below the surface.
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 FacebookWreck diving is thrilling, mysterious, and skill-intensive. Train with confidence, and take the first step into the world of overhead diving environments.
💸 9,990.00 THB
Get certified fast! SDI Wreck Diver in 1 day, 3 dives incl. eLearning – dive into wrecks today!
💸 11,990.00 THB
Explore real wrecks! 2 days, 4 dives incl. PDF manual & cert – start your PADI Wreck adventure now!
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Related (Straight Talk): HTMS Chang: swim-through, limited & full wreck penetration —overhead terms, light zone, and who may lead what on this wreck.
