Aside from the physical attributes evident in the existing prototype; caliber, number of barrels, overall dimensions, function of the elevation and traverse mechanisms, etc... very little is known for certain about the Salvenmaschinenkanone (SMK) 18 Typ 2.
Its 8 barrels were designed to fire simoultaneously, sending an enormous amount of metal into the air with each cycle of its massive bolt.
It would have been operated by a crew of 3-4 operators. The aiming mechanism controls were operated by the crewman in the right hand seat. The loader(s) would have been located on the rear platform.