| Anti-Aircraft - Machine Gun | ||
| 20 mm-MG-C/30 | ||
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| Above view | View left side | Fore view |
| 20 mm-MG-C/30 (Anti-Aircraft - Machine Gun) | |||
| Gun Characteristics | |||
| Designation | 20 mm/L65 (0,79") MG C/30 | ||
| Date of design | 1930 | ||
| Date in service | 1934 | ||
| No. of weapons installed | Bismarck: 12 Tirpitz: 12 (later reduced to 10) |
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| Locations | Single mounted | ||
| Gun weight | 64 kg (141 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 | 720 mm | ||
| Chamber volume | 0,048 dm³ (2,93 in³) | ||
| Rate of fire | 280 rounds per minute (theoretical) 120 rounds per minute (practical) |
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| 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) |
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| 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) |
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| 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 | 420 kg (926 lbs) | ||
| Elevation | -11°/+85° | ||
| Elevation rate | Manually operated | ||
| Train | 360° | ||
| Train rate | Manually operated | ||
| Gun recoil | N/A | ||
© John Asmussen, 2000 - 2014. All rights reserved.