The Similan Islands are located 50 Km due West of Khao Lak and 120 km Northwest Of Phuket. There is no airport on the islands. There is no pier on the Similan Islands.
These remote islands are home to a small group of National Park Rangers who live there to protect the reefs and islands, a few people to run the government cafeteria and the tents and bungalows.
Getting to the islands is best arranged through either a travel agent in the region or a diving or snorkeling company. There are plenty.