Diving Hin Pee Wee (Boulders) in Koh Tao, Thailand

I dove Hin Pee Wee in August 2026 with Big Blue Diving, by boat out of Koh Tao, Thailand.

Big Blue call it Hin Pee Wee, but our guide called it Boulders, and once you are down there you understand why.

The site sits right next to the HTMS Sattakut wreck, close enough that the two get dived together on one tank.

That is how I dove it, so the log below covers both sites.

The Site

Hin Pee Wee sits off the west coast of Koh Tao, south of Koh Nang Yuan, about 30 metres from the Sattakut.

It is named after one of the original diving pioneers on the island rather than after the rock itself.

Koh Tao operators describe it as three main pinnacles, with the top of the main rock around 26 feet (8 m) and the base near 66 feet (20 m).

What you actually swim through are enormous granite boulders with channels running between them.

The Dive

My Garmin logged a max depth of 83 feet (25.3 m), an average of 47 feet (14.3 m), and 49 minutes across both sites.

Most of that depth came from the wreck rather than the boulders.

The coral cover here is better than on the Sattakut next door, which makes sense given the wreck has only been down since 2011.

Working the channels is the whole appeal of the site.

You drop between two boulders, follow the gap, and come out somewhere different.

Dive Conditions

Water temperature averaged 86°F (30°C).

This was the second dive of the day, after Southwest Pinnacle that morning.