| 21 cm SK L/40 | |
|---|---|
 A twin turret aboard SMS Scharnhorst | |
| Type | Naval gun Railway gun Coastal artillery |
| Place of origin | German Empire |
| Service history | |
| In service | 1898-1945 |
| Used by |  German Empire Nazi Germany |
| Wars | Boxer Rebellion Venezuelan Crisis World War I World War II |
| Production history | |
| Designer | Krupp |
| Designed | 1897-1904 |
| Manufacturer | Krupp |
| Produced | 1898 |
| Variants | C/97 C/01 C/04 |
| Specifications | |
| Mass | C/97: 16,500 kg (36,400 lb) C/01: 20,020 kg (44,140 lb) C/04: 18,900 kg (41,700 lb) |
| Length | 8.4 m (27 ft 7 in) |
| Barrel length | 7.8 m (25 ft 7 in) |
| Shell weight | 108–113.5 kg (238–250 lb) |
| Caliber | 210 mm (8.3 in) 40 caliber |
| Breech | Cylindro-prismatic breech block |
| Elevation | See Table |
| Traverse | -150 to +150 ° |
| Rate of fire | 4-5 rpm |
| Muzzle velocity | 780 m/s (2,600 ft/s) |
| Maximum firing range | 12.4 km (7.7 mi) at +16° 16.3 km (10.1 mi) at +30° |
The 21 cm Schnelladekanone Länge 40, abbreviated as 21 cm SK L / 40, was a German naval gun developed in the years before World War I that armed a number of the Imperial German Navy's protected and armored cruisers. Later spare guns were adapted to railway guns during World War I and later employed as coastal artillery during World War II.[1]
- ^ DiGiulian, Tony. "Germany 21 cm/40 (8.27") SK L/40 - NavWeaps". www.navweaps.com. Retrieved 2017-03-07.