The idea for a heavy assault mortar first appeared in March 1943, as an entirely new vehicle. It was later decided that the mortar should be mounted on the chassis of the Tiger I, mounting a modified 380 mm anti-submarine rocket launcher.
Due to design issues and delays, the first Sturmmörser Tiger were not completed until until August 1944. Rather than building a seperate vehicles, Tiger chassis sent back from the front for repairs were modified with a fixed armored superstructure. A total of 18 vehicles were built, the final five being completed in December 1944.
Three seperate assault mortar companies were created, the first two of which saw action during the Ardennes offensive.
|Armour (range)||25-150 mm|
|Speed (max)||37.5 km/h|
|Speed (road)||30 km/h|
|Speed (cross-country)||25 km/h|
|Engine||Maybach HL 230 P45|
|Primary weapon||38 cm Stu M (1)|