Koh Chang Divers

Koh Chang Divers has built its reputation on the back of the HTMS Chang wreck — one of Thailand’s most impressive wreck dives. The 100-metre former naval vessel, sunk in 2012, is now a thriving artificial reef that Koh Chang Divers know better than anyone else.

Their wreck penetration guide training is superb — you’ll enter the bridge, wheelhouse, and engine room with a guide who knows every corridor and can point out the resident groupers, moray eels, and scorpionfish that have made the vessel home.

Beyond the wreck, their trips to the Koh Rang National Park reefs reveal some of the healthiest coral systems in the Gulf of Thailand — genuinely spectacular, and far less crowded than anything around Koh Tao or Koh Samui. For divers seeking a genuine off-the-beaten-path experience, Koh Chang deserves a serious look.