Each gun had to be accompanied by a crane, a heavy transport trailer, and several modified tanks to carry shells. The weapon was moved long distances via rail on a variant of a Schnabel car, the whole chassis was hung between two huge pedestal-mounted swiveling arms fixed to five-axle bogies.[8] When it reached its destination, the weapon was detached from its supporting arms, driven to its intended firing location, then the chassis was lowered to the ground to distribute the recoil forces more evenly in preparation for firing.