Discover divers.world

Everything here is free to read. You only need an account to take part.

Straight into the data

Sign in

Signing up is free and gives you a logbook, a profile and the buddy system.

Sail Rock

Also known as: Hin Bai

Sail Rock is a solitary pinnacle that breaks the surface in open water between Koh Phangan and Koh Tao, and its signature feature is the Chimney, a vertical tunnel through the rock that divers enter at about 18 m and leave near the top at roughly 5 to 8 m. Below the steep walls, which reach about 20 m, the bottom keeps falling away to around 40 m, and a few smaller pinnacles sit near the main rock. Because the rock stands alone, it attracts large schools of chevron and pickhandle barracuda, trevally, batfish and fusiliers as well as big groupers, while whale sharks pass by occasionally, mostly in season, and the walls and the Chimney hide morays, nudibranchs and small crustaceans. Currents can be strong on one side of the rock and absent on the other, and visibility changes with the season and around the pinnacle. A typical dive spirals upward around the rock; Open Water divers stay above 18 m, and the Chimney and deeper parts suit advanced divers with good buoyancy control.

Divesite facts

Categories
Pinnacle, Wall, Swim-throughs
Usual dive
Around the rock
Typical depth range
5 to 40 m
Coordinates
9.9450, 99.9904

Position on the map

Tags

pinnacle wall swim through chimney whale shark barracuda batfish trevally

Names of this dive site

Divers know a place by different names. Add the name you know, with its language if it belongs to one. Every name helps other divers find the site.

  • Sail Rock
    Main name
    Votes as main name: 0
  • Hin Bai
    Votes as main name: 0

Vote for the name divers really use. Divers who logged a dive here count double. The votes are counted every night, and the main name only changes when another name has led clearly for a week.

Sign in to add a name or to report a wrong one. Sign in