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9.45-inch heavy mortar
Heavy trench mortar / From Wikipedia, the free encyclopedia
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The ML 9.45 inch heavy trench mortar,[3] nicknamed the "Flying Pig",[4] was a large calibre mortar of World War I and the standard British heavy mortar from the autumn of 1916. It was a modification of an original French design, the Mortier de 240 mm developed by Batignolles Company of Paris and introduced in 1915. Britain manufactured the modified version under licence.
Quick Facts ML 9.45 inch heavy trench mortar, Type ...
ML 9.45 inch heavy trench mortar | |
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![]() Colourised postcard showing Australian Army personnel loading a mortar near Pozières – in August 1916, according to the caption. The absence of a fuse and lack of concealment indicates this is a training or publicity photograph away from the front line. | |
Type | Heavy trench mortar |
Place of origin | United Kingdom |
Service history | |
In service | 1916–1918 |
Used by | United Kingdom Australia |
Wars | World War I |
Production history | |
Designer | Dumezil-Batignolles |
Designed | 1915 |
No. built | 712[1] |
Specifications | |
Mass | Mortar & elevating gear 499 lb (226 kg), + body & bed 987 lb (Mk I) 644 lb, + 1169lb (Mk II–IV)[2] |
Barrel length | 4 ft 3 in (1.30 m) (Mk I) 5 ft 8 in (1.73 m) (Mk II–IV)[2] |
Crew | 7 |
Shell | HE 152 pounds (69 kg)[2] |
Calibre | 9.45 inch (240 mm) |
Elevation | 75°–45° |
Traverse | 18° L & R |
Rate of fire | 1 round every 6 minutes |
Muzzle velocity | 475 ft/s (145 m/s) max charge |
Effective firing range | 660–2,400 yards (600–2,190 m) |
Filling | Amatol or ammonal |
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