The Downs is a roadstead (area of sheltered, favourable sea) in the southern North Sea near the English Channel off the east Kent coast, between the North and the South Foreland in southern England. In 1639 the Battle of the Downs took place here, when the Dutch navy destroyed a Spanish fleet which had sought refuge in neutral English waters. From the Elizabethan era onwards, the presence of the Downs helped to make Deal one of the premier ports in England, and in the 19th century, it was equipped with its own telegraph and timeball tower to enable ships to set their marine chronometers.