24 cm SK L/40

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°[1]

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.