BL 6-inch Mk VII naval gun

The BL 6 inch Gun Mark VII (and the related Mk VIII)[9] was a British naval gun dating from 1899, which was mounted on a heavy traveling 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.

Country Name Origin Year
United Kingdom - UK (Great Britain) 1901
Country Name Operational Year Retirement Year
United Kingdom - UK (Great Britain) 1901 1972 View

Type Naval gun
Coastal defence gun
Heavy field gun
Place of origin United Kingdom - UK (Great Britain)
Service history
In service 1901–72 (Fort Scratchley)
1915–18 (field use)
Wars World War I
World War II
Production history
Designer Vickers
Designed 1899
Number built 898
Variants Mk VII, Mk VIIv, Mk VIII, Mk XXIV
Weight 16,875 lb (7,654 kg) (gun & breech)
25 tons (gun on field carriage)
Length 279.228 inches
Barrel length 269.5 in (6.85 m) (44.9 cal)
Crew 9
Shell Lyddite, HE, Shrapnel 100 lb (45 kg)
Calibre 6 in (152 mm)
Breech Welin interrupted screw
Recoil 16.5 in (419 mm)
Rate of fire 8 rpm
Muzzle velocity 2,525 ft/s (770 m/s) (light charge)
2,775 ft/s (846 m/s) (heavy charge)
Maximum firing range Field carriage Mk. II : 13,700 yd (12,500 m)Naval : 14,600 yd (13,400 m) (light charge); 15,800 yd (14,400 m) (heavy charge)
Filling weight Lyddite : 13 lb 5 oz (6.0 kg)
Amatol : 8 lb 14 oz (4.0 kg)
Shrapnel : 874 balls @ 27/lb

End notes