Anti-Aircraft - Machine Gun
20 mm-MG-C/38 Quadruple
Above view View left side

20 mm-MG-C/38 (Anti-Aircraft - Machine Gun)
Gun Characteristics
Designation 20 mm/L65 (0,79") MG C/38 (Flak 35)
Date of design 1938
Date in service 1940
No. of weapons installed Bismarck: 8 (was installed in two quadruple mounts at Gotenhafen (Gdynia) by the end of April 1941)
Tirpitz: 72 (was installed in quadruple mounts by July 1944)
Locations Quadruple mounted
Gun weight 57,5 kg (129 lbs)
Gun length oa 2,2525 m (88,7 in)
Length of bore 1,300 m (51,2 in)
Number of grooves 8
Length of rifling 72 cm (28,46 in)
Chamber volume 0,048 dm³ (2,93 in³)
Rate of fire 480 rounds per minute (theoretical)
220 rounds per minute (practical)
Ammunition
Type Cartridge - Fixed
Complete round weight 0,320 kg (0,71 lbs)
Projectile types and weights API - 0,148 kg (0,326 lbs)
HEI - 0,134 kg (0,300 lbs)
Bursting charge N/A
Projectile length 7,85 cm (3,1 in)
Propellant container type and weight Cartridge - 0,186 kg (0,41 lbs)
Propellant charge 0,120 kg (0,265 lbs)
Muzzle velocity API: 800 meters per second (2.625 feets per second)
HEI: 835 meters per second (2.740 feets per second)
Working pressure 2.800 kg/cm² (17,8 tons/in²)
Approximate barrel life 20.000 - 22.000 rounds
Ammunition Inventory 24.000 rounds in total
Range
Elevation with 0,134 kg (0,300 lbs) HE Shell
Range at 45° 4.900 m (5.360 yards)
AA ceiling at 85° 3.700 m (12.140 feet)
Mount/Turret Data
Weight 2.150 kg (4.740 lbs)
Elevation -10°/+90°
Elevation rate Manually operated
Train 360°
Train rate Manually operated
Gun recoil N/A