22.5 cm Minenwerfer M 15

The 22.5 cm Minenwerfer M 15 was a heavy mortar used by Austria-Hungary in World War I. It was developed by Böhler as an alternative to the German Ehrhardt 25 cm schwere Minenwerfer which Böhler was having problems building under license. It was a muzzle-loading, smooth-bore mortar that had no recoil system whatsoever. The entire mortar had to be levered around to aim at new targets. It was not particularly accurate and bombs often fell over in flight and landed on their sides which caused a lot of duds in soft ground. It fired high-explosive and gas shells. For transport two wheels from the Gebirgsgechütz M 99 were used.

The M 17 version of this weapon had an elevation screw with a double thread and reinforced trunnion bearings. It's unclear how the M 16 differed from the earlier model.

22.5 cm Minenwerfer M 15
Class Manportable
Type Mortars
Manufacturer Bohler
Production Period 1915 - 1918
Origin Austria-Hungary
Country Name Origin Year
Austria-Hungary 1915
Country Name Operational Year Retirement Year
Turkey (Ottoman Empire) View
Austria-Hungary 1915 1918 View
ManufacturerName Production From Production To Quantity
Bohler 1915 1918 930 View

Type Heavy trench mortar
Place of origin Austria-Hungary
Service history
In service 1915-1918
Used by Austria-Hungary
Ottoman Empire
Wars World War I
Production history
Designer Böhler
Designed 1914-15
Manufacturer Böhler
Produced 1915-18
Number built 930+
Variants M 16 and M 17
Specifications
Weight 565 kg (1,246 lb)
Length 1.35 m (4 ft 5 in) L/6
Shell 48 kg (106 lb)
Caliber 225 mm (8.9 in)
Elevation +25° to +75°
Traverse
Rate of fire 2 rpm
Muzzle velocity 170 m/s (560 ft/s)
Maximum firing range 675 m (738 yd)

End notes