Stokes mortar
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This article is about the World War I Stokes 3-inch mortar. For the World War II mortar, see Ordnance ML 3 inch mortar.
The Stokes mortar was a British trench mortar designed by Sir Wilfred Stokes KBE that was issued to the British and U.S. armies, as well as the Portuguese Expeditionary Corps, during the latter half of the First World War. The 3-inch trench mortar is a smooth-bore, muzzle-loading weapon for high angles of fire. Although it is called a 3-inch mortar, its bore is actually 3.2 inches or 81 mm.[5]
Quick Facts 3 inch Stokes mortar, Type ...
3 inch Stokes mortar | |
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![]() Sir Wilfred Stokes with example of his mortar and bombs. Typical 3-inch bombs used are 2nd and 6th from left | |
Type | Light mortar |
Place of origin | United Kingdom |
Service history | |
Used by | |
Wars | |
Production history | |
Designer | Sir Wilfred Stokes KBE |
Designed | 1915 |
Specifications | |
Mass | 104 lbs (47.17 kg) total[3] |
Crew | 2 |
Shell | HE 10 lb 11 oz (4.84 kg)[4] |
Calibre | 3.2 in (81 mm)[5] |
Action | Trip |
Elevation | 45°-75°[6] |
Rate of fire | 25 rpm (maximum)[7] 6-8 rpm (sustained) |
Effective firing range | 750 yards (686 m) |
Maximum firing range | 800 yards (731 m)[8] |
Filling | amatol |
Filling weight | 2lb 4 oz (1 kg)[9] |
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