The first post-World War I naval gun developed by Germany. A good weapon for its size but considered to be somewhat heavy for a hand-worked mount. Not widely used and ammunition for it was scarce during the last years of the war. Most of the Torpedo Boats had these guns replaced by the 10.5 cm/45 (4.1") SK C/32 in the 1930s, but Jaguar still carried them as late as 1944 and was often short of ammunition at that time.

Some of these guns were bored out and became the early models of the 12.7 cm/45 (5") SK C/34.

Gun Characteristics

Designation 10.5 cm/55 (4.1") SK C/28
Ship Class Used On Torpedo Boat Type 23 (Wolf) class and Training Ship Bremse
Date Of Design 1928
Date In Service 1930
Gun Weight 8,070 lbs. (3,660 kg)
Gun Length oa 226.8 in (5.760 m)
Bore Length 213.8 in (5.431 m)
Rifling Length N/A
Grooves N/A
Lands N/A
Twist N/A
Chamber Volume 513 in3 (8.4 dm3)
Rate Of Fire 15 rounds per minute


Type Fixed
Complete Round Weight N/A [probably around 53 lbs. (24 kg)]
Projectile Types and Weights HE - 32.4 lbs. (14.7 kg)
Bursting Charge N/A
Projectile Length 18.1 in (459 mm)
Propellant Charge 11.8 lbs. (5.37 kg) RPC/32 (6.5/3.5)
Muzzle Velocity 3,035 fps (925 mps)
Working Pressure N/A
Approximate Barrel Life N/A
Ammunition stowage per gun Torpedo Boats: 100 rounds
Bremse: N/A


Range with 32.4 lbs. (14.7 kg) HE
Elevation Distance
30 degrees 18,860 yards (17,250 m)

Mount / Turret Data

Designation Single Mounts
Bremse (4) and Wolf (3) 1: MPL C/30
Weight N/A
Elevation -10 / +30 degrees
Elevation Rate Hand operated, only
Train 360 degrees
Train Rate Hand operated, only
Gun recoil N/A

Additional Pictures


"Naval Weapons of World War Two" by John Campbell
"German Warships 1815-1945" by Erich Gröner
"Die Geschichte der deutschen Schiffsartillerie" by Paul Schmalenbach
"German Naval Guns: 1939 - 1945" by Miroslaw Skwiot
"German Warships of World War II" by J.C. Taylor

Page History

10 May 2006 - Benchmark
04 June 2011 - Minor updates
28 January 2019 - Converted to HTML 5 format