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The Gulf of Thailand



Experience Level: We recommend that you are a PADI Advanced Open Water Diver or equivalent with a minimum of 30+ dives for this itinerary. 


  • The yacht departs from port Saturday evening for its first night anchorage to prepare for diving the next morning. 
  • The yacht will arrive back to the pier Friday afternoon/early evening. The crew will host a cocktail party, then dinner will be served onboard.



The Similan Islands lie approximately 100 km Northwest of Phuket, Thailand. Declared a National Park in 1982, the Similans are comprised of 9 islands, which run roughly North to South with numerous smaller rock outcroppings. With snow-white beaches, lush tropical jungle and spectacular dive sites in stunning turquoise waters, it's not surprising that the Similans are ranked as one of the top 10 dive sites in the world! Thailand liveaboard diving is some of the best diving in the world.


Nearly all of the 9 islands are surrounded by huge underwater rock formations, eroded by the action of a relentless sea. These stone giants are home to an amazing variety of marine life, with depths often reaching 40 meters or more. Narrow swim-thru's, caverns and underwater canyons form a truly unique diving landscape. With names like 'Elephant Head', 'Boulder City', 'Sharkfin Reef' and 'East of Eden', you'll soon appreciate why the Similans deserve the reputation they've obtained.


Thailand Dive Sites - Koh Bon and Koh Tachai

Are two uninhabited islands, situated between the Similans and Surin National Park to the North of the Similans. They offer a variety of excellent dive sites - including a breathtaking drop-off - with a wealth of hard and soft corals, and great opportunities to see passing manta rays and whale sharks.


Richelieu Rock

The best dive site in Thailand, lies Northeast of Koh Tachai, close to the southern border of Burma. This small rocky outcrop is covered in soft corals and offers an amazing variety of marine life, with the chance to see Stingrays, Guitar Rays, Leopard Sharks and large schools of Trevallies and Barracudas.


And best of all, Richelieu Rock is a ‘magnet’ for Whale Sharks and ranks among the world’s best places to observe these gentle giants. Close encounters with two or three Whale Sharks are fairly common, making this site a unique experience for any diver.