24 cm SK L/40
              < 24 cm SK L 
          | 24 cm SK L/40 | |
|---|---|
| Twin C/92 turret aboard SMS Wettin | |
| Type | Naval gun Coastal artillery | 
| Place of origin | German Empire | 
| Service history | |
| In service | 1898-1945 | 
| Used by | German Empire Austria-Hungary Netherlands Nazi Germany | 
| Wars | Boxer Rebellion World War I World War II | 
| Production history | |
| Designer | Krupp | 
| Designed | 1894 | 
| Manufacturer | Krupp | 
| Produced | 1898 | 
| Variants | Krupp 24 cm L/40 K94 Skoda 24 cm L/40 K97 Skoda 24 cm L/40 K/01 | 
| Specifications | |
| Mass | 24,000–25,600 kg (52,900–56,400 lb) | 
| Length | 9.5 m (31.2 ft) | 
| Barrel length | 8.8 m (28.9 ft) | 
| Shell | Separate loading cased charges and projectiles | 
| Shell weight | 140–151 kg (309–333 lb) | 
| Caliber | 24 cm (9.4 in) caliber | 
| Breech | Horizontal sliding-wedge | 
| Recoil | Hydro-pneumatic | 
| Elevation | Naval Mounts: -5° to +30° Coastal Artillery: -5° to +46° | 
| Traverse | -150° to +150° | 
| Rate of fire | 3 rpm | 
| Muzzle velocity | WWI: 690 m/s (2,300 ft/s) WWII: 810 m/s (2,700 ft/s) | 
| Maximum firing range | WWI: 16.9 km (10.5 mi) at +30° WWII: 26.6 km (16.5 mi) at +46° | 
The 24 cm Schnelladekanone Länge 40, abbreviated as 24 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 pre-dreadnought battleships and armored cruisers. Later; a number of these guns were removed from naval ships and converted to coastal artillery; which would see service during World War I and World War II. The actual bore diameter was 23.8 cm (9.4 in), but the classification system for artillery rounded up to the next highest centimeter.