Sail Rock Thailand – Best Dive Site Near Koh Tao & Koh Phangan
Sail Rock is widely considered one of the best dive sites in the Gulf of Thailand. Located between Koh Tao and Koh Phangan, this dramatic underwater pinnacle rises from deep water to just below the surface, attracting huge schools of fish and pelagic species.
Although not directly off Koh Tao, many dive centres run special trips to Sail Rock, making it a must-do dive for anyone visiting the island.
Why Dive Sail Rock?
- ✔ One of the top dive sites in Thailand
- ✔ Famous “chimney” swim-through from 18m to 5m
- ✔ Massive schools of fish and pelagic activity
- ✔ Excellent visibility compared to Koh Tao sites
- ✔ Chance to see whale sharks
Dive Site Details
Location: Between Koh Tao and Koh Phangan
Depth: 5m – 40m+
Level: Advanced Open Water recommended
Conditions: Can have currents
Special Feature: Vertical “chimney” swim-through
The Famous Sail Rock Chimney
The chimney is a vertical swim-through inside the rock, starting at around 18 metres and exiting at approximately 5 metres. It is one of the most unique dive features in Thailand and a highlight for many divers.
This feature allows for a controlled ascent while exploring inside the rock, often surrounded by schools of fish.
Marine Life at Sail Rock
Sail Rock is known for its huge schools of trevally, barracuda and fusiliers, as well as larger pelagic species passing through the area.
Divers may also encounter whale sharks, making this one of the best locations in the region for big marine life encounters.
Planning more dives? Check out our full Koh Tao diving guide for the best dive sites, courses and tips.
Who Is This Dive Suitable For?
Sail Rock is best suited for experienced divers due to its depth and potential currents. Advanced Open Water certification is recommended, although some dive centres allow less experienced divers depending on conditions.
Diving Sail Rock from Koh Tao
While Sail Rock is located closer to Koh Phangan, many dive centres in Koh Tao run special trips to this site, usually as a full-day excursion.
These trips often include multiple dives and offer the chance to experience one of the best dive sites in the Gulf of Thailand.
Dive Sail Rock with Chalok Reef Divers
If you're looking to experience Sail Rock, Chalok Reef Divers offers trips to this world-class dive site, giving you the chance to explore the famous chimney and encounter large schools of fish.
Spaces are limited due to demand, so it's recommended to book in advance.
Book a Sail Rock Trip →Explore more dive sites: Chumphon Pinnacle | Sattakut Wreck