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15 cm SK C/25
Bundesarchiv Bild 101II-MN-1405-07, Kreuzer "Nürnberg".jpg
15 cm SK C/25 in Drh LC/35 turret on Nürnberg
Type naval gun
Place of origin Weimar Republic
Service history
In service 1929–45
Used by Weimar Republic
Nazi Germany
Wars Second World War
Weight 11,970 kilograms (26,390 lb)
Length 9.08 metres (29.8 ft)
Barrel length 8.57 metres (28.1 ft)

Shell separate-loading, cased charge
Caliber 149.1 millimetres (5.87 in)
Breech semi-automatic, vertical sliding block
Elevation -10° to +40°
Traverse 360°
Rate of fire 8 rpm (maximum)
Muzzle velocity 960 metres per second (3,100 ft/s)
Maximum range 25,700 metres (28,100 yd)

The 15 cm SK C/25[Note 1] was a German medium-caliber naval gun used during the Second World War. It served as the primary armament for the K- and Leipzig-class cruiser. Oddly, no weapons of this type surplus appear to have been used as coast-defense guns.


This gun was the most powerful of the Kriegsmarine's 15 centimetres (5.9 in) guns and was designed with a loose barrel, jacket and breech-piece with a vertical sliding breech block.[1]


The Drh. LC/25 triple-gun mount was the only mount used for this gun in the Kriegsmarine. The mount weighed between 136.91–147.15 tonnes (134.75–144.83 long tons; 150.92–162.21 short tons), depending on its armor thickness; the Nürnberg's mounts had between 20–80 mm (0.79–3.15 in) of armor while the other ships had 20–30 mm (0.79–1.18 in). Maximum elevation was 40°, giving a range of 25,700 metres (28,100 yd), and maximum depression was -10°, while the electric motors had a maximum elevating speed of 8° per second. Each mount was designed for full 360° of traverse, but was limited to much less than that by the ship's superstructure. Speed in train was a maximum of 6-8° per second using electrically powered hydraulic pumps. The maximum firing cycle was 7.5 seconds, or 8 rounds per minute, despite being hand-loaded and rammed. Ammunition was supplied by three hoists, one between the left and center guns and the other two between center and right guns at the rear of the mount.[1][2]


The SK C/25 had a number of different shells available.[2]

Shell name Weight Filling Weight Muzzle velocity
base-fused HE shell with ballistic cap (Sprenggranate L/4.5 m Bdz m. Hb) 45.5 kg (100 lb) 3.058 kg (6.74 lb) 960 m/s (3,100 ft/s)
nose-fused HE shell with ballistic cap (15 cm Spgr. L/4.4 Kz m. Hb) 45.5 kg (100 lb) 3.892 kg (8.58 lb) 960 m/s (3,100 ft/s)
base-fused armor-piercing shell with ballistic cap (Panzer-Sprenggranate) L/3.7 m Bdz. m Hb) 45.5 kg (100 lb) .885 kg (1.95 lb) 960 m/s (3,100 ft/s)
illumination shell 41 kg (90 lb) Unknown 650 m/s (2,100 ft/s)


  1. SK - Schnelladekanone (quick loading cannon); C - Construktionsjahr (year of design)
  1. 1.0 1.1 Campbell, p. 239
  2. 2.0 2.1 Tony DiGiulian (20 November 2008). "German 15 cm/60 (5.9") SK C/25". Archived from the original on 2009-07-20. Retrieved 2009-06-23. 


  • 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. 

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