3.7 cm SK C/30
|3.7 cm SK C/30|
3.7 cm SK C/30 on a Dopp LC/30 stabilized mount
|Place of origin||23x15px Nazi Germany|
|Used by|| 23x15px Nazi Germany|
|Wars||Second World War|
|Variants||3.7 cm SK C/30U|
|Weight||243 kilograms (536 lb)|
|Length||3.074 metres (10.09 ft)|
|Barrel length||2.962 metres (9.72 ft) (L/83)|
|Shell||fixed, cased charge|
|Shell weight||.68 kilograms (1.5 lb)|
|Caliber||3.7 centimetres (1.5 in)|
|Breech||semi-automatic, vertical sliding block|
|Elevation||depends on the mount|
|Rate of fire||30 rpm (practical)|
|Muzzle velocity||1,000 metres per second (3,300 ft/s)|
|Effective range||2,000 metres (6,600 ft) (effective ceiling)|
|Maximum range||8,500 metres (9,300 yd) at 37.5°|
The 3.7 cm SK C/30 (Schiffkanone - ship's gun, Construktionsjahr - model year 30) was the German Kriegsmarine's primary 3.7 cm (1.5 in) anti-aircraft gun during the Second World War. It was superseded by the fully-automatic 3.7 cm Flak M43 late in the war.
The C/30 was a single-shot, semi-automatic anti-aircraft gun that was loaded one round at a time which dropped its effective rate of fire to a mere 30 rounds per minute, far inferior to the 80-100 rounds per minute of its contemporary, the Bofors 40 mm anti-aircraft gun. The SK C/30U gun was modified for use by submarines. All mountings were suitable for use against both air and sea targets.
The Dopp LC/30 was a twin mount with each gun in a separate cradle. It had a six-man crew on the mount itself plus additional ammunition handlers. The mounting was manually traversed and elevated and was gyro-stabilized up to a limit of 19.5° degrees to counteract the roll and pitch of the ship. Most German ships, fleet torpedo boat or larger, carried at least one Dopp LC/30 mounting. The Einheitslafette C/34 (universal mounting model 34) was a single gun mounted on a pedestal with a two-man crew. Some mounts were fitted with a 8 millimetres (0.31 in) gun shield. It was used on the smaller Kriegsmarine ships like the Schnellboot. A number were used on land to supplement the anti-aircraft defenses of ports. The Ubts LC/39 submarine mount used the SK C/30U gun. It was a simple pedestal mount with a two-man crew, one of whom trained the gun with the shoulder stirrup; the other used gears to elevate the gun.
|Dopp LC/30||3,670 kg (8,090 lb)||-9° to +85°|
|Ein LC/34||1,860–2,020 kg (4,100–4,450 lb)||-10° to +80°|
|Ubts LC/39||1,450 kg (3,200 lb)||-10° to +90°|
The SK C/30 used two types of tracer rounds. The 3.7 cm Br Sprgr Patr 40 L/4.1 Lh 37M was a high-explosive round with an incendiary filling while the 3.7 cm Sprgr Patr 40 L/4.1 Lh 37 lacked the incendiary fill, but was otherwise identical. Tracers were available in red, yellow or white and were marked on the shell by a painted band of the appropriate color. A complete round weighed 1.78 kilograms (3.9 lb).
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- Campbell, John. Naval Weapons of World War Two. London: Conway Maritime Press, 2002 ISBN 0-87021-459-4
- Gander, Terry and Chamberlain, Peter. 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, 1979 ISBN 0-385-15090-3
- Hogg, Ian V. German Artillery of World War Two. 2nd corrected edition. Mechanicsville, PA: Stackpole Books, 1997 ISBN 1-85367-480-X