| 21 cm RK L/19 | |
|---|---|
 Krupp 21 cm RK L/19 gun on a broadside carriage | |
| Type | |
| Place of origin | German Empire |
| Service history | |
| In service | cc 1870 |
| Used by | |
| Production history | |
| Designer | Krupp |
| Manufacturer | Krupp |
| Specifications (L/19) | |
| Mass | 9,390 kg[1] |
| Length | 3.923 m [2] (L/19) |
| Caliber | 209.5 mm |
| Breech | Horizontal sliding breech |
| Muzzle velocity | 425 m/s[3] |
| Effective firing range | 3,750 m at 9.5°[3] |
The 21 cm RK L/19 was the later name of a rifled breech loader gun of the Prussian Navy. This gun started with a massive gun barrel, cast from steel in one piece. In 1868 a built-up gun barrel version was tested in Prussia and found to be much more powerful. Many of the massive guns were then changed to built-up guns. These changed guns became known as kurze Ring Kanone, and later as 21 cm Ring Kanone L/19.
- ^ Von Müller 1879, p. 289.
- ^ Von Müller 1879, p. 288.
- ^ a b Von Müller 1879, p. 297.