The diving liveaboard Somboon III is permanently based in the Similan National Park throughout the Phuket dry season (from November to end of April). The liveaboard also navigates Koh Bon on Saturdays and Wednesdays. As the trip starts with a speedboat transfer from the port of Tab Lamu (on a daily basis), divers can stay as long on the boat as they want. Even a day trip with 2 dives is possible. During a full day on the liveaboard, 4 dives are done.