BL 7.5-inch naval howitzer
| BL 7.5-inch naval howitzer | |
|---|---|
| On SS Boonah | |
| Type | Anti-submarine mortar | 
| Place of origin | United Kingdom | 
| Service history | |
| In service | 1917–192? | 
| Used by | British Empire | 
| Wars | World War I | 
| Specifications | |
| Mass | Gun & breech 812 pounds (368 kg) | 
| Barrel length | Bore 63.75 inches (1.619 m) | 
| Shell | HE 100 pounds (45.4 kg) | 
| Calibre | 7.5-inch (191 mm) | 
| Breech | single-motion interrupted screw | 
| Muzzle velocity | 480 feet per second (146 m/s) | 
| Maximum firing range | 2,100 yards (1,920 m) | 
| Filling | TNT | 
| Filling weight | 43 pounds (19.5 kg) | 
The BL 7.5-inch howitzer (naval) was a British anti-submarine mortar developed during World War I.