24 cm SK L/40

24 cm SK L/40
SMS Wettin NH 47897.jpg
Twin C/92 turret aboard SMS Wettin
TypeNaval gun
Coastal artillery
Place of originGerman Empire
Service history
In service1898-1945
Used byGerman Empire
Nazi Germany
WarsBoxer Rebellion
World War I
World War II
Production history
VariantsKrupp 24 cm L/40 K94
Skoda 24 cm L/40 K97
Skoda 24 cm L/40 K/01
Weight24–25.6 t (26.5–28.2 short tons)
Length9.5 m (31 ft 2 in)
Barrel length8.8 m (28 ft 10 in)

ShellSeparate loading cased charges and projectiles
Shell weight140–151 kg (309–333 lb)
Caliber24 cm (9.4 in) 40 caliber
BreechHorizontal sliding-wedge
ElevationNaval Mounts: -5° to +30°
Coastal Artillery: -5° to +46°
Traverse-150° to +150°
Rate of fire3 rpm
Muzzle velocityWWI: 690 m/s (2,300 ft/s)
WWII: 810 m/s (2,700 ft/s)
Maximum firing rangeWWI: 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 guns removed from these ships were converted to coastal artillery and were used 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.


The 24 cm SK L/40 was designed in 1894 and produced in 1898 by Krupp for the Imperial German Navy. Krupp also produced a variant of the 24 cm SK L/40 for the Austro-Hungarian Navy called the 24 cm L/40 K94 which armed coastal defense ships, pre-dreadnought battleships and armored cruisers. Skoda later produced the Škoda 24 cm L/40 K97 and the Škoda 24 cm L/40 K/01 under license.[2] Krupp 24 cm guns also armed coastal defense ships of the Royal Netherlands Navy.[3]

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