BL 7.5-inch naval howitzer

BL 7.5-inch naval howitzer
On SS Boonah
TypeAnti-submarine mortar
Place of originUnited Kingdom
Service history
In service1917 - 192?
Used byBritish Empire
WarsWorld War I
Specifications
MassGun & breech 812 pounds (368 kg)[1]
Barrel lengthBore 63.75 inches (1.619 m)[1]
ShellHE 100 pounds (45.4 kg)
Calibre7.5-inch (191 mm)
Breechsingle-motion interrupted screw
Muzzle velocity480 feet per second (146 m/s)
Maximum firing range2,100 yards (1,920 m)
FillingTNT
Filling weight43 pounds (19.5 kg)[2]

The BL 7.5-inch howitzer (naval) was a British anti-submarine mortar developed during World War I.

  1. ^ a b Hogg and Thurston 1972, Pages 148-149
  2. ^ Standard shell was 100 lb, containing 43 lb TNT. In early 1918 a 500 lb stick bomb containing 250 lb TNT was developed, with a range of 300 yards. Hogg & Thurston 1972, page 148