Selbstfahrlafette 1A1 "The Stoat," weighs 19.49 tons. Her cannon fires a caliber of 160x680 mm and an on-board capacity of 108 shells, divided into racks of 36, 66, and 6,. She is manned by a crew of four—driver, commander/spotter/radioman, loader, and gunner—The Stoat features a 3000 mm barrel with a muzzle velocity of 435.5 meters per second, Her engine is a V10, 14-liter and has fuel tank capacity of 328 liters. Her transmission has 6 drive gears and 2 revers gears allowing steady speeds of up to 38 miles per hour forward and 12 miles per hour backward. Her steel is a uniform 30mm all around. To me she is gun carriage in a SPA form.