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28 cm SK L/45
Bundesarchiv Bild 101I-113-0024-21, Nordeuropa, Küstenbatterie.jpg
Coast defense mounting of the SK L/45 gun at MAB 1./507 Husøya in Norway, during World War II
Type Naval gun
Place of origin German Empire
Service history
In service 1910—1945
Used by German Empire
Nazi Germany
Wars World War I
World War II
Production history
Designer Krupp
Designed 1907—09
Manufacturer Krupp
Produced 1909—1913?
Weight 39.8 metric tons (39 long tons; 44 short tons)
Length 12.735 meters (41 ft 9 in)
Barrel length 12.006 meters (39 ft 5 in) (bore length)

Shell separate-loading, case charge
Shell weight 284–302 kilograms (626–666 lb)
Caliber 283 millimeters (11 in)
Breech horizontal sliding-wedge
Muzzle velocity 855 to 875 m/s (2,810 to 2,870 ft/s)

The 28 cm SK L/45[Note 1] was a German naval gun that was used in World War I and World War II. Originally a naval gun, it was adapted for land service after World War I.


The 28 cm SK L/45 gun weighed 39.8 metric tons (39.2 long tons; 43.9 short tons), had an overall length of 12.735 meters (41 ft 9.4 in) and its bore length was 12.006 meters (39.39 ft). Although designated as 28 cm (11 in), its actual caliber was 28.3 centimeters (11.1 in). It used the Krupp horizontal sliding block breech design (or “wedge”, as it is sometimes referred to) rather than the interrupted screw commonly used in heavy guns of other nations. This required that the propellant charge be loaded in a metal, usually brass, case which provides obduration i.e. seals the breech to prevent escape of the expanding propellant gas.


Naval guns[]

Mounted on Nassau-class battleships and the battlecruiser SMS Von der Tann.

Coast defense guns[]

3 guns mounted at Battery Goeben on Husøya island, near Trondheim, Norway and formed Naval Coast Artillery Battery (Marine Küstenartillerie Batterie) "Goeben", later 1st Battery, Naval Artillery Battalion (1./Marine Artillerie Batallion) 507 "Husöen".[1][2]

See also[]


  1. SK - Schnelladekanone (quick loading cannon); L - Länge in Kaliber (length in caliber)


  • Campbell, John (2002). Naval Weapons of World War Two. London: Conway Maritime Press. ISBN 0-87021-459-4. 
  • Gander, Terry; Chamberlain, Peter (1979). Weapons of the Third Reich: An Encyclopedic Survey of All Small Arms, Artillery and Special Weapons of the German Land Forces 1939–1945. New York: Doubleday. ISBN 0-385-15090-3. 
  • Hogg, Ian V. (1997). German Artillery of World War Two (2nd corrected ed.). Mechanicsville, PA: Stackpole Books. ISBN 1-85367-480-X. 
  • Rolf, Rudi (1998). Der Atlantikwall: Bauten der deutschen Küstenbefestigungen 1940-1945. Osnabrück: Biblio. ISBN 3-7648-2469-7. 
  • Rolf, Rudi (2004). A Dictionary on Modern Fortification: An Illustrated Lexicon on European Fortification in the Period 1800-1945. Middleburg, Netherlands: PRAK. 

External links[]

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