Ferries and island routes in Thailand

The sea route

Thailand’s ferry network makes more sense when it is seen as a set of regional sea systems, not as one national service. The southern Gulf of Thailand, the Andaman coast, and the eastern Gulf around Trat all use ferries, but they connect different kinds of places and rely on different kinds of piers.

In the southern Gulf, the main island chain is Koh Samui, Koh Phangan, and Koh Tao. All three are part of the wider Surat Thani island region, although Koh Tao sits much closer to the Chumphon coast than Samui does. The sea routes here include high-speed passenger craft and larger ferries that carry vehicles. That mix is important because the pier name often says as much about the service as the island name.

Koh Samui is the clearest example. It has several ferry points rather than one universal terminal. Lomprayah lists offices at Nathon and Pralarn Pier in Mae Nam. Raja Ferry uses Lipa Noi for its vehicle-ferry service. Other operators also use Bang Rak. These places are on different parts of a large island. A ticket that says “Koh Samui” so does not describe one single waterfront.

Koh Phangan is more concentrated around Thong Sala for major ferry traffic. Raja Ferry identifies Thong Sala as its Koh Phangan terminal, while high-speed passenger operators also use the island as part of the Samui–Phangan–Tao chain. Farther north, Mae Haad on Koh Tao is the island’s main ferry arrival area. The three islands are linked by sea, but each landing has a different relationship with its settlement. Nathon is an old west-coast town on Samui. Thong Sala is Koh Phangan’s main port settlement. Mae Haad is Koh Tao’s transport hub.

Piers, islands, and coastal life

The Andaman coast has a different pattern. Large islands, small archipelagos, mainland tourism towns, and marine national parks sit along a long north-south coast. Phuket’s Rassada Pier is a major passenger terminal on the southeast side of the island. Krabi’s Klong Jilad Pier is a major maritime gateway near Krabi Town. Ban Saladan is the main northern arrival settlement on Koh Lanta. Farther south, Pak Bara in Satun is the main mainland gateway for Koh Lipe and the Tarutao island region.

This produces a chain rather than a single route. Operators such as Satun Pakbara Speed Boat Club describe services that have linked Phuket, Phi Phi, Koh Lanta, the Trang islands, Tarutao, Koh Lipe, and Langkawi. The same broad sea corridor can so contain large passenger ferries, fast catamarans, speedboats, and smaller transfer craft.

Trat is different again. The mainland ferry system for Koh Chang is based on a short vehicle-ferry crossing between Ao Thammachat and Ao Sapparot on the island’s northeast side. Koh Kood uses another mainland gateway, Laem Sok, and is served by passenger ferries, catamarans, and speedboats. The two islands belong to the same Trat seascape, but their main ferry corridors are not interchangeable.

The geography explains why pier identity matters. Thailand’s ferry routes cross open coastal water, sheltered channels, island chains, and short straits. They also connect places with very different transport needs. A vehicle ferry serving a large island community performs a different job from a speedboat linking smaller resort islands. A high-speed catamaran moving between several Gulf islands performs a different job again.

That is why “the ferry to Samui,” “the ferry to Krabi,” or “the ferry to Koh Chang” is incomplete as a description. The useful unit is the whole crossing: the mainland or island settlement, the named pier, the vessel class, and the sea corridor between them.