Whitehaven (hwĪtˈhāvən) [key], town (1991 pop. 27,512), Cumbria, NW England, at the mouth of Solway Firth. Whitehaven is a seaport and industrial town. There are chemical works, iron foundries, and other industries. Whitehaven was attacked by John Paul Jones in 1778 and by a German submarine in 1918. Local Calder Hall is the site of Britain's first nuclear power station.