Explore T11 Wreck – Koh Chang’s Legendary Shipwreck Dive
T11 Wreck is one of Koh Chang’s most exciting and unique dive sites. Located just 50 meters from Hin Raap South, Secret Reef, and Blueberry Hill, this shipwreck has become a must-visit site for wreck divers. Originally a coastal patrol gunship, the T11 (formerly known as PGM 71) was built by the US Navy and launched on September 14, 1964. It was transferred to the Royal Thai Navy on May 5, 1965, and later intentionally sunk on December 17, 2013, to create an artificial reef.
Why Dive at T11 Wreck?
- Shipwreck Adventure: Explore the remains of a 30-meter-long patrol gunship that has split in half, offering exciting areas to explore.
- Wreck Diving & Navigation Training: Ideal for specialty courses, the wreck is perfect for practicing navigation and wreck diving skills.
- Marine Life & Hidden Creatures: Spot bamboo sharks, schools of fish, and even a “compass-wearing” triggerfish!
Dive Site Overview
| Max Depth | 16 meters |
|---|---|
| Ship Length | 30 meters |
| Marine Life | Bamboo sharks, triggerfish, schools of fish, small reef fish |
Don’t miss your chance to explore this legendary shipwreck! Book a fun dive or specialty wreck course with Chang Diving Center today!
Diver Level for this dive site.
Min. certification level: Junior, Open Water Diver (or equalled)
Try Diving possibility: No
Snorkelling possibility: No
Our Divemaster’s
Our Divemasters will give you a boat briefing and an overview for the day at the time the boat starts. They will give you a Dive briefing before each dive, and be in the front to lead the group while diving. Ask you frequently for Air consumption and knock against the Tank to get your attention. If there is any problem they will assist you, to secure your and others safety. If you and your buddy would like to explore the dive-site yourself the Divemasters will give you a briefing on the boat and check the predive safety procedure before your buddy team enter the water.
Entry and Exit
- Dive Boat
- Dinghy Boat
Predive Safety Check! We enter the water from the side of the Boat with a Giant Strike, if all is OK, clear the place and swim on the surface to the starting point. After the dive, back on the surface we swim back to the ladder on the side of the boat, stand on the ladder and take off the fin’s (give it up to the crew) climb up the ladder with the regulator in your mouth. Never stay under a diver which try to climb up.
Predive Safety Check! We enter the water with a backroll entry. When everything is OK, clear the place and swim on the surface to the starting point. After the dive, back on the surface, we swim back to the dinghy boat. When you reach the dinghy boat remove your weight belt and BCD. Start to get up the dinghy with the help of a few kicks with your fin’s.
Dive Procedures
- Review the necessary Handsignals for scuba diving.
![Basic Handsignals while scuba diving]()
- What you maight spot while diving or snorkelling
- When you end any dive a safety stop on 5 m of depth for 3 min is recommended.
Emergency Procedures
- Police, Phone: 191
- Tourist Police, Phone: 1155
- EMS, Phone: 1669
- DAN International, Phone: +1-919-684-9111
- Suspicion of DCS
- Recrompression chaimber, Koh Chang Hospital, Phone: 039 521-657 or 039 586-131