New London, Connecticut, a city in New London County. It is on Long Island Sound at the mouth of the Thames River, in the southeastern part of the state. New London is the site of the U.S. Coast Guard Academy and Connecticut College. The town of Groton, across the Thames from New London, has a submarine base and facilities for building submarines. New London's factories produce naval equipment, metal products, and drugs and chemicals.
The town was settled in 1646 by the younger John Winthrop as a part of Massachusetts Bay Colony. New London was a privateering base during the Revolutionary War, and for this reason was raided in 1781 and almost destroyed by British forces led by Benedict Arnold. For a time during the 19th century the city was an important shipping and whaling port.