21 cm Mörser 18
| 21 cm Mörser 18 | |
|---|---|
Front of Morser 18 US Army field artillery museum at Fort Sill | |
| Type | Heavy howitzer |
| Place of origin | Germany |
| Service history | |
| In service | 1939–45 |
| Used by | Nazi Germany |
| Wars | World War II |
| Production history | |
| Designer | Krupp |
| Designed | 1933 |
| Manufacturer | Krupp |
| Produced | 1939–45 |
| No. built | 711+ |
| Specifications | |
| Mass | 16,700 kg (36,817 lbs) |
| Barrel length | 6.51 m (21 ft 4 in) L/30 |
| Shell | separate-loading cased ammunition (6 charges) |
| Shell weight | 113 kg (249 lb) (HE) |
| Caliber | 211 mm (8.3 in) |
| Breech | horizontal sliding-block |
| Recoil | dual-recoil hydro-pneumatic |
| Carriage | box trail |
| Elevation | -6° to +70° |
| Traverse | 16° on wheels 360° on platform |
| Muzzle velocity | 550–565 m/s (1,800–1,850 ft/s) |
| Effective firing range | 16,725 m (18,291 yd) |
The 21 cm Mörser 18 (21 cm Mrs 18), or 21 cm Mörser M 18/L31, was a German heavy howitzer used in the Second World War by Independent artillery battalions and batteries. A number were also used by coastal artillery units.