The QF 5.25-inch Mark I gun was the heaviest dual-purpose gun used by the Royal Navy during the Second World War. Although considered less than completely successful, it saw extensive service. 267 gun
5.25-inch turret on HMS Sirius. The empty cartridge cases from firing in support of the Allied invasion of Normandy, June 1944
QF 5.25-inch Mark I turret on HMS King George V
Inside a 5.25-inch gun turret on HMS King George V in 1943.
Twin naval anti-aircraft mounting at Primrose Hill, London, August 1943
HMS Royalist was a Bellona-class light cruiser of the Royal Navy and Royal New Zealand Navy during the Second World War and early Cold War.
Royalist anchored at Greenock, Scotland, in September 1943
Royalist and a Supermarine Seafire off Alexandria, 1945
HMNZS Royalist during the Suez Crisis
HMNZS Royalist at Devonport Naval Base, 1956