[Specification for, and plans (3) of, twin-screw, iron-clad, deck-covered corvette "Northampton" / Admiralty (& Govan, Chatham and Devonport Dockyards). 1874, 1888. 58p. + 3 sheets (on roll with others), line drawings, two with or part with wash, scales various. Comprise specification, midship section, drawing re watertight compartments, sheer drawing] Specification for, and plans (3) of, twin-screw, iron-clad, deck-covered corvette "Northampton" 1874, 1888