This weapon was used to arm almost all Torpedo Boats built between 1936 and 1945 as well as on many smaller vessels. Originally designed as a surface-only weapon, later mounts provided a higher maximum elevation for anti-aircraft defense. A wet-mount version was developed for U-Boats. Also exported to Spain during the 1940s.
Earlier guns were monobloc types with barrel, jacket and breech-end piece. Later guns had a lighter, two-piece loose-liner barrel.
Many of the older, World War I-era, 10.5 cm SK L/45 weapons were modified during the 1930s and 1940s to use the same ammunition as the SK C/32 and these guns then had similar performance.
Some of these guns were still in service in Norwegian coastal defense batteries as late as 2002. The Norweigian firm of Nammo Raufoss AS produced anti-ship rounds for these guns during the 1980s.
|Designation||10.5 cm/45 (4.1") SK C/32|
|Ship Class Used On||
|Date Of Design||1932|
|Date In Service||1934|
|Gun Weight||3,494 lbs. (1,585 kg)|
|Gun Length oa||186.6 in (4.740 m)|
|Bore Length||173.2 in (4.400 m)|
|Rifling Length||145.43 in (3.694 m)|
|Grooves||(32) 0.049 in deep x 0.268 in (1.25 mm x 6.8 mm)|
|Lands||0.138 in (3.5 mm)|
|Twist||Increasing RH 1 in 45 to 1 in 30|
|Chamber Volume||328 in3 (5.380 dm3)|
|Rate Of Fire||15 rounds per minute|
|Complete Round Weight||
|Projectiles and Weight||
|Propellant Charge||Germany: 9.0 lbs. (4.08 kg) RPC/40N (4.4/1.7)
Norway: 9.1 lbs. (4.15 kg)
|Cartridge Case Size and Empty Weight||105 x 459 mm, 10.1 lbs. (4.6 kg)|
|Muzzle Velocity||Germany: 2,560 fps (780 mps)
Norway: 2,575 fps (785 mps)
|Working Pressure||18.0 tons/in2 (2,850 kg/cm2)|
|Approximate Barrel Life||4,100 rounds|
|Ammunition stowage per gun||T1, T22 and M261: 120 rounds 2
Type I U-boat: 120 rounds
Type IX U-boat: 110 rounds
- ^Nammo-Raufoss AS produced an anti-ship projectile (ASP M85) for the Norwegian Coastal Defense batteries between 1986 and 1988. This projectile had the same interior and external ballistics as the earlier German rounds. The zirconium in the burster was added to increase the incendiary effect.
- ^Outfits for torpedo-boats, F-boats and minesweepers included HE incendiary and AP.
|Weight||MPL C/32: 14,297 lbs. (6,485 kg)
MPL C/32ge: 14,771 lbs. (6,750 kg)
Ubts LC/32: 10,957 lbs. (4,970 kg)
Ubts LC/36: 10,141 lbs. (4,600 kg)
MPLC/30: 15,234 lbs. (6,910 kg)
|Elevation||MPL C/32: -10 / +50 degrees
MPL C/32ge: -10 / +70 degrees
Ubts LC/32: -10 / +35 degrees
Ubts LC/36: -10 / +30 degrees
MPLC/30: -9 / +80 degrees
|Elevation Rate||Hand operated, only|
|Train Rate||Hand operated, only|
- ^I lack information on the mountings used on Spanish warships. Almirante Cervera carried four of these guns after being refitted during World War II.
- ^Most Type IX and Type X U-boats had these guns removed after 1942 in order to mount additional light AA guns. Guns were then reused on Type 40 minesweepers.
- "German Navy at War 1935-1945: The U Boat" by Siegfried Breyer and Gerhard Koop
- "Naval Weapons of World War Two" by John Campbell
- "Jane's Ammunition Handbook: Ninth Edition 2000-2001" edited by Terry J. Gander and Charles Q. Cutshaw
- "German Warships 1815-1945" by Erich Gröner
- "German Destroyers of World War Two" (2nd Edition) and "German Capital Ships of World War Two" both by M.J. Whitley
Special help from Jamal Hannah