Fort Scratchley, a former coastal defence installation, is now a museum. It is located in Newcastle East, a suburb of Newcastle, New South Wales in Australia. It was built in 1882 to defend the city against a possible Russian attack. However, its guns were not fired in anger until 8 June 1942, during the shelling of Newcastle. The Australian Army left the site in 1972.

The BL 6-inch gun Mark VII was a British naval gun dating from 1899, which was mounted on a heavy travelling carriage in 1915 for British Army service to become one of the main heavy field guns in the First World War, and also served as one of the main coast defence guns throughout the British Empire until the 1950s.