Getting There & Away
Ko Kut is accessible from the mainland pier of Laem Sok, 22km southeast of Trat, the nearest bus transfer point. Three boat services as well as a speedboat service run from adjacent piers. Boat services offer free transport from Trat guesthouses and the bus station but not from the airport.
Speedboats will drop you off at your resort if possible; normal boats offer free land transfer on your arrival at Ao Salad Pier to your destination.
Koh Kood Princess runs an air-con boat (350B, 1¾ hours, 12.30pm) that docks at Ao Salad, in the northeastern corner of the island.
Ko Kut Express runs an air-con fast ferry (350B, 1¼ hours, 1pm) to Ao Salad. It also runs a twice-daily speedboat service from November to April (600B, one hour, 10.30am and 2.30pm), dropping to weekends-only (and weather-permitting) off-season.
Boonsiri has a catamaran (500B, 1¼ to 1¾ hours, 10.45am and 2.20pm) that runs from Laem Sok to Ao Salad. The afternoon departure goes via Ko Mak. From mid-May to mid-October there's only one departure, at 1.30pm (and no Ko Mak link), with an extra 10.45am boat on Fridays. The company runs a direct bus service from Bangkok to meet the boats (850B including boat, five hours).
Two companies run speedboats from Ko Chang to Ko Kut (900B, 2½ hours) via Ko Wai and Ko Mak. The cheapest way to do this is to book a through-trip with Bang Bao Boat via Ko Mak, with the first section by wooden boat and the second by speedboat (700B).
Ko Kut's roads are steep, which rules out renting a push bike unless you are a champion cyclist.
Motorbikes can be rented for 200B to 300B per day.