bbdivers.com · Operator
Koh Chang operator page with site selection and trip-planning context.
HTMS Chang Wreck
Boat wreck dive with big fish schools and penetration potential.
Scuba DivingBoatAdvanced30m+
Artificial reefWreck
Local operator required
Usually visited by boat with a local Koh Chang dive center.
HTMS Chang Wreck is a large artificial reef and boat dive near Koh Chang with a deep hull, penetration opportunities, and strong fish life for trained divers.
About HTMS Chang Wreck
This is a purpose-sunk shipwreck and is described as the largest recreational wreck dive in the Gulf of Thailand. The wreck is about 100 m long and sits at roughly 30 m. It is popular for wreck diving and is considered suitable for penetration, with large schools of fish commonly reported around the structure.
Safety & Access
Site Conditions
Overhead environment
Safety Notes
Penetration dives add overhead risk and require appropriate training, equipment, and planning.
Access Restrictions
Boat access; wreck penetration requires proper training, gear, and conservative gas planning.
Legal Notes
Follow local marine and boating rules and respect penetration limits on the wreck.
Where Is HTMS Chang Wreck?
Featured Operators
Loading local operators…
Local Intel For HTMS Chang Wreck
Community notes to help plan your visit.
Scuba Diving
A recreational wreck dive around 30 m with potential for wreck penetration.
Freediving
Not a freedive-first site; the wreck sits well beyond casual breath-hold depth.
Snorkeling
Occasional snorkel visits can happen, but the main attraction is below recreational breath-hold depth.
Wildlife at HTMS Chang Wreck
Species commonly reported at this site, with direct links into their wildlife guides.
Research Estimate At HTMS Chang Wreck
Conservative baseline from public research. No community dives logged yet.
Avg. Visibility15m
Access4/5 · Simple entry
Coral3/5 · Mixed health
Aquatic Life4/5 · Great variety
Facilities4/5 · Good facilities
CurrentLight current
