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  • A
  • B
  • C


40 miles from Ao Chalong

KOH HA YAI. (A) 7° 25.736N, 98° 53.803E

Koh Ha, (‘Five Island’), is a group of small, interestingly-shaped limestone outcrops that poke up out of the sea between Koh Phi Phi and Koh Rok Nok.

It’s well worth planning your voyage, whether heading north or south, to spend a few hours at this spectacular location. The geology of these stacks is totally unique and the islands look like the work of a drunken bricklayer.

The west coast of Koh Ha Yai, the larger southern island, is one of the best dive sites in the area and, despite some damage from dynamite fishing, the coral in the shallow waters surrounding the smaller islets can be superb.

This little island group is exposed, offering no real protection in either season. Take special care when anchoring and never leave your vessel unattended. Motor slowly towards the beach on the eastern coast of the south island and, when conditions permit, anchor off the reef edge on a sandy bottom in 10 metres or pick up a mooring at anchorage (C) [7° 25.953N, 98° 53.868e].

If you are not diving, the better anchorages can be found at (A) and (B) [7° 25.436N, 98° 53.431e] as conditions permit. There are daytime moorings used by light shallow-draft dive boats in all three locations.

Perhaps the most spectacular anchorage is at (A), where there is a silica low-tide-only beach nestled between the rocks, offering superb snorkelling off a shallow sand bank littered with coral heads in five metres. The island just north of (A) looks like a floating island and can be swum under at certain states of tide.

National Park HQ on Koh Rok Nai - Photo by Grenville Fordham
National Park HQ on Koh Rok Nai – Photo by Grenville Fordham
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While every effort has been made to ensure that the information contained in this book is accurate, the charts of anchorages are based on personal experience and satellite imagery and are intended as a guide only. They should not be used for navigation. Please refer to Official Hydrographic Charts of the respective countries.

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