This article examines the maritime activities and emigration of Muslim Sylhetis, from what today is north-eastern Bangladesh. Among the Bengali people, Sylhetis were the pioneers in crossing the sea in the Age of Empire. In their voyages, they worked as crewmen on merchant ships, and then began to settle abroad, mainly in Britain and the USA. Some of those who settled in Britain started restaurants and lodging houses. One of the unexplored questions of South Asian historiography is: why was it the Sylhetis who became seamen and emigrants, even though they lived about 300 miles away from the sea? This article traces the socioeconomic, religious, and ecological environment of Sylhetis to understand their transnational mobility, notably within the increasingly interconnected realms of the British empire.