The Sturmpanzer VI mit 38cm Mörser RW61 was a Self Propelled Artillery vehicle designed in 1943, manufactured by Alkett, it was based on the fully tracked Tiger chassis and was in use from 1943 to 1945. It was commonly called a Sturmtiger. General Details (SP Artillery) Specifications Operational Date(s) 1943 - 1945 Quantity Produced 18 Weight 65 tonne Crew 5 M.G's small 1 M.G's large(>10mm) n/a Length 6.37 mtr Width 3.57 mtr Height 2.87 mtr Engine Details/Performance Max Road Speed 25 mph Max Cross Country Speed 13 mph Range Road 75 miles Range Cross Country 30 miles Fuel Type Petrol Fuel Capacity unknown Horse Power 700 hp Power/Weight 10 hp/tonne General Information The Sturmpanzer VI mit 38cm Mörser RW61 was a Self Propelled Artillery vehicle designed in 1943, manufactured by Alkett, it was based on the fully tracked Tiger chassis and was in use from 1943 to 1945. It was commonly called a Sturmtiger. The vehicle was powered by Maybach 'HL230 P45 V-12,' petrol powerplant producing 700 HP which could drive the vehicle on roads at up to 25 mph with a range of about 75 miles before refuelling. Its cross country performance was good providing a max speed of about 13 mph and a range of about 30 miles. It was armed with 1 light machine gun. Its main armament consisted of a 38cm RW 61 firing a shell weighing 349.0 kg to a maximum range of 5,000 metres. The 38cm rocket mortar was install in the Tiger I chassis for destroying building and concrete installations, it was based on a Naval anti submarine weapon. Armour Details Turret Front n/a Side n/a Rear n/a Top n/a Superstructure Front 150mm @ 45° (212mm) Side 80mm @ 30° (92mm) Rear 80mm @ 0° (80mm) Top 35mm @ 90° (35mm) Hull Front 100mm @ 25° (110mm) Side 60mm @ 0° (60mm) Rear 80mm @ 9° (81mm) Top 25mm @ 90° (25mm) Armour (x)mm @ (y)° (Effective mm @ 0°) Effective Armour - Maximum 212 mm - Minimum 25 mm Weapon Details 38cm RW 61 38cm Raketenwerfer 61 (translates as Rocket Thrower) History This was originally a Naval weapon for use against submarines, but was fitted to the Tiger I as a large mortar. Manufactured 1944 - 1945 Calibre 380mm Length L/5 Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content Raketen Sprenggranate 4581 (HE High Explosive) 380mm 349Kg 250M/Sec 125.000Kg explosive Maximum Range 5000 Mtr Range(Mtr) 500 1000 1500 2000 2500 3000 3500 4000 Flight Time(Secs) 2.05 4.2 6.46 8.83 11.31 13.91 16.64 19.49 lateral dispersion means the side to side variation of the shell from the aiming point 50%(CEP) of shells land within +/- (mtr) 0.13 0.27 0.40 0.53 0.67 0.80 0.93 1.07 80% of shells land within +/- (mtr) 0.17 0.35 0.51 0.68 0.86 1.02 1.19 1.37 95% of shells land within +/- (mtr) 0.25 0.53 0.78 1.04 1.31 1.57 1.82 2.10 range dispersion means the back to front variation of the shell from the aiming point 50%(CEP) of shells land within +/- (mtr) 0.17 0.33 0.50 0.67 0.83 1.00 1.17 1.33 80% of shells land within +/- (mtr) 0.22 0.42 0.64 0.86 1.06 1.28 1.50 1.70 95% of shells land within +/- (mtr) 0.33 0.65 0.98 1.31 1.63 1.96 2.29 2.61 Direct Fire Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.41 0.82 1.68 3.56 Hit Probability(%) 98 92 68 15 Blast/Fragmentation Effects Burst radius Infantry in open 99% kill 8 mtr Burst radius Infantry in open 66% kill 17 mtr Burst radius Infantry in open 33% kill 43 mtr  Armour Penetration inc roof at 10 mtr 375 mm An explosion within 8 mtr of infantry in the open will cause 99% casualties - lethal. An explosion within 17 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. An explosion within 43 mtr of infantry in the open will cause 33% casualties. The blast effect of this shell exploding within 10 mtr of an armoured vehicle will penetrate 375 mm of the tank armour including the roof. Raketen Hohladungsgranate 4582 (HEAT High Explosive Anti-Tank) 380mm 349Kg 250M/Sec Quoted Penetration 585mm @ 2000mtr/0° Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.4 0.81 1.62 3.37 5.65 7.53 9.41 Penetration(mm@30°) 585 585 585 585 585 585 585 Penetration(mm@0°) 585 585 585 585 585 585 585 Hit Probability(%) 98 92 68 25 3 3 3 About Penetration Figures All penetration figures in this database are calculated to a common standard based on German WWII testing criteria (complete penetration with functioning fuze). This allows direct comparison between all nations' guns. Original national test figures would be higher for some nations due to different criteria: German: 1.00? (baseline - strictest) British: 1.02? (slightly looser) American: 1.05? (50% mass through plate) Soviet: 1.10? (75% mass through plate) For example, a Soviet gun showing 159mm here would be published as ~175mm in Soviet documents, and a German gun showing 120mm would be published as 120mm in German documents. The 159mm figure is directly comparable to the German 120mm - the Soviet gun really was more powerful. National Testing Standards German: 1.00? - Complete penetration, fuze functions (strictest) British: 1.02? - Complete penetration American: 1.05? - 50% of shell mass through plate Soviet: 1.10? - 75% of shell mass through plate All database figures are normalized to German standard for direct comparison. Multiply by the factor above to see original national test figures.

Hit probability is based on a static 2 x 2.4 metre panel at 0 degrees(vertical) at the range specified.

The data that has been used to create these records has come from Wikipedia, The Lone Sentry, The Bundes Archive and numerous books and websites that have provided the detailed information that has not been available anywhere else. The information we use to calculate the penetration tables, flight times and the hit probability comes from the Gun Calibre, the Shell Mass(Kg) and the muzzle velocity, plus range reductions to allow for gravity and wind resistance. This calculation originally came from a pre-war Krupp calculation which has been modified, and seems to fit the actual test results.

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