Dartmouth, town (1991 pop. 5,282), Devon, SW England, on the Dart estuary. The principal feature of the town is the Royal Naval College. Dartmouth has engineering and pottery industries, boatbuilding facilities, and is a yachting center. Dartmouth was an important port for the wine trade (12th-15th cent.) with Bordeaux and supplied Edward III with 31 ships for the siege of Calais in the Hundred Years War. U.S. troops used Dartmouth as an embarkation point for the Normandy invasion (see under Normandy campaign) in World War II.