Koh Bon, Koh Tachai and Richelieu Rock
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A compact route to three key sites north of the Similan Islands. The yacht departs from Khao Lak and in a short trip covers Koh Bon, Koh Tachai, and Richelieu Rock — three sites that many divers come to Thailand for.
Koh Bon is a chain of reefs with soft and hard corals where manta rays and leopard sharks regularly appear on the wall. Koh Tachai is a series of underwater mounds in the open sea with strong currents attracting mantas and reef sharks. Richelieu Rock is a horseshoe-shaped pinnacle named by Jacques-Yves Cousteau as one of the world’s best dive sites. Visibility ranges from 10 to 40 meters depending on location, depths reach 50 meters. The route is designed for intermediate and advanced divers.
What You'll See
Conditions
Season
November–April
Visibility
10–40 meters
Water Temperature
27–29°C
Level
Advanced Open Water
Duration
2–3 nights
Useful Information
Best Season
October–May (dry season, Similans open)
Visa
Visa-free entry for up to 30 days for Russian citizens
How to Get There
Direct flights from Moscow to Bangkok (9 hours), then a domestic flight to Phuket.
Climate
Tropical monsoon, 28–35°C
Currency
Thai Baht (THB)
Time Zone
UTC+7
Koh Bon, Koh Tachai and Richelieu Rock
Thailand
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