About this spot
HTMS Chang, a former Thai naval vessel, sits as one of Thailand's most accessible wreck dives. The site attracts divers seeking structure dives with reliable conditions throughout the year. The wreck hosts a variety of marine life that has been documented by the diving community, making it a consistent choice for both experience and exploration. The site requires standard open-water diving skills and is situated in areas that support healthy coral and fish populations. Visibility and depth vary with conditions, so checking current reports before your dive is essential. The wreck's stable structure and marine colonization make it suitable for photographers and naturalists alike. Divers regularly visit and document encounters at HTMS Chang, with video documentation available from the community. The site sits outside marine protected areas, meaning standard Thai dive regulations apply. Year-round access means you can plan a trip almost any time, though seasonal weather patterns will affect sea conditions.
📖 Guide: Diving in Thailand: 73 Sites from Whale Sharks to Shallow Reefs
Best months
Dive types
Trip essentials
Everything you need before you pack — checklist, sun, logistics.
Trip checklist
- 🛂 Visa-free or visa-on-arrival
- 📜 C-card + dive insurance (DAN)
- 📔 Dive logbook
- 🧴 Reef-safe sunscreen SPF 50+
- 🔌 Plug type A/B/C · 220V adapter
- 💊 Seasickness meds + ear drops
- 📱 Offline maps + emergency contact
Quick facts
- 🌓 Moon First quarter · 47%
- GPS
› Sustainability disclosures
From your departure country
- Visa: Visa on arrival · 30 days max
- Flight: 11h · direct
- Jet-lag: 12h east · 8 days recovery
FAQ
›When is the best time to dive HTMS Chang?
HTMS Chang can be dived year-round. Thailand's weather varies by season—dry season (November–April) typically offers calmer seas, while monsoon months (May–October) bring rougher conditions. Check local conditions before booking, as weather can shift dive windows.
›What depth and difficulty level is this wreck?
Exact depth varies depending on which section of the wreck you explore. Open-water certified divers can typically access shallower sections. Deeper penetrations require advanced training and experience. Always dive with a knowledgeable local guide familiar with the wreck's layout.
›What marine life will I see at HTMS Chang?
The wreck hosts diverse fish species and has documented marine observations from 12 logged sightings. Coral colonization on the structure supports smaller reef inhabitants. Life varies with season and water conditions, so species encounters are never guaranteed but frequently reported.
›Do I need permits to dive HTMS Chang?
HTMS Chang is not inside a marine protected area, so standard Thai diving regulations apply. You must dive with a licensed operator familiar with the site. Confirm current permit requirements and safety protocols with your dive shop before arrival.
