21 cm RK L/22
              < 21 cm RK L 
 
            
          | 21 cm RK L/22 | |
|---|---|
| Turkish 21 cm RK L/22 in Preveza, Greece | |
| Type | |
| Place of origin | Kingdom of Prussia | 
| Service history | |
| In service | 1870 | 
| Used by | |
| Production history | |
| Designer | Krupp | 
| Manufacturer | Krupp | 
| Specifications | |
| Mass | 10,327 kg (22,767 lb) | 
| Length | 4.708 m (15 ft 5.4 in) L/22 | 
| Caliber | 209.2 mm (8.24 in) | 
| Breech | horizontal sliding wedge | 
| Muzzle velocity | 446 m/s. | 
| Effective firing range | 6,000 m (20,000 ft) at 14.10° elevation | 
The 21 cm RK L/22 was a 21 cm caliber Krupp gun that was purposefully designed to use a combination of prismatic gunpowder, a built-up gun barrel, and the Krupp cylindroprismatic sliding breech with broadwell ring.