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The Tiger-Mörser or Sturmmörser was a self propelled armoured mount for the breach loading rocket firing 38cm Raketenwerfer 61 L/54. The vehicle had been developed after a German army request for a self-propelled 21cm howitzer had floundered when it was discovered that no suitable howitzer existed. It was based on the chassis of the Tiger I, with a fighting compartment build over the front of the tank.
The Raketenwerfer had been developed as a naval anti-submarine weapon. It had a range of 4,600m, and the Tiger-Mörser could carry twelve shells in racks and one in the barrel. A small crane was mounted at the rear of the superstructure, to help load the heavy shells.
Only a very small number of Tiger-Mörsers were constructed – either 10 or 18 – and were used to equip Sturmmörser Companies 1001, 1002 and 1003. These units found in the final defensive battles in Germany in 1944-45.
Names
  38cm RW61 auf Sturmmörser Tiger
  Tiger-Mörser
  Sturmtiger
  Sturmmörser
Stats
  Number produced:  18
  Produced: August-December 1944
  
Length: 6.28m
  Hull  Width: 3.57m
  Height: 2.85m
  Crew: 5
  Weight: 65 tons 
  Engine: Maybach HL230P45
  Max Speed: 40km/hr
  Max   Range:  120km
  Armament: One 38cm Stu M RW61 L/5.4 and one 7.92mm MG34
Armour
  | 
    Front  | 
    Side  | 
    Rear  | 
    Top/ Bottom  | 
  
Superstructure  | 
    150mm  | 
    80mm  | 
    80mm  | 
    25-40mm  | 
  
Hull  | 
    100mm  | 
    60mm  | 
    80mm  | 
    25mm  |