Gulf of Thailand

The eastern Gulf of Thailand connected coastal ports and the approaches to the Mekong delta through a maritime world of merchants, migrants and rival courts. Chinese junks arriving from Fujian and Guangdong were an important part of its seventeenth- and eighteenth-century commerce. Cantonese, Teochew and Hokkien settlers contributed to port communities, shipbuilding and local government, linking the coast with commercial networks beyond the gulf.

After the fall of Ayutthaya in 1767, the new Siamese centres at Thonburi and Bangkok sought to rebuild their power through these waters. Hà Tiên, associated with the Mạc family and the Nguyễn rulers of southern Vietnam, became a particularly important focus of rivalry. Taksin's naval forces seized it in 1771. The contest involved more than fleets alone: rulers relied on established trading communities, local pilots and knowledge of coastal connections. The sea approaching the Mekong thus formed a field of political competition sustained by the same mobility that carried merchants and migrants between ports.