600 mm artillery

'''Karl-Gerät (040/041) ( in German), also known as Mörser Karl', was a World War II German self-propelled siege mortar (Mörser'') designed and built by Rheinmetall. Its heaviest munition was a diameter, shell; the range for its lightest shell of was just over . Each gun had to be accompanied by a crane, a two-piece heavy transport set of railcars, and several modified tanks to carry shells.