The BL 15-inch Mark I succeeded the BL 13.5-inchMk V navalgun. It was the first British 15-inch (380 mm) gun design and the most widely used and longest
nominally 4.5 inch naval guns, the QF MkI has an actual calibre of 4.45 inches (113 mm). From the BL Mark Igun of 1916 the 4.7-inch (120 mm) calibre was
The QF 4 inchMk XVI gun was the standard British Commonwealth naval anti-aircraft and dual-purpose gun of World War II. The Mk XVI superseded the earlier