Calibre
80 cm
Barrel length
~30 m (40 calibres)
Combat weight
1,350 tonnes
Assembled length
43 m
Crew (operating)
~500 men
Crew (total, incl. security)
~2,500 men
Ammunition: HE shell
4.8 t · range 47 km
Ammunition: concrete-piercing shell
~7.1 t · range ~38 km
Propellant charge per shot
~2 tonnes
Units built
2 (Schwerer Gustav and Dora)
Manufacturer
Friedrich Krupp AG, Essen
Chief designer
Erich Müller