The QF 4 inch Mk XVI gun was the standard British Empire naval anti-aircraft and dual-purpose gun of World War II.
Twin Mk XVI on HMCS Haida
Crew of a dual 4-inch at action stations aboard HMS Berwick while in screening the Atlantic Convoys in May 1943.
Twin guns of HMAS Swan bombarding shore positions in New Guinea, February 1945
Single Mk XX mounting on HMAS Barcoo, 1945
The Fiji-class cruisers were a class of eleven light cruisers of the Royal Navy that saw extensive service throughout the Second World War. Each ship of the class was named after a Crown colony or oth
Nigeria in 1943