The SdKfz 251/ 9 Ausf A,B,C 7.5cm StuK 37 L/24 was a Self Propelled Artillery vehicle designed in 1936, manufactured by Hanomag Borgward, it was based on the half track SdKfz 251 Ausf A chassis and was in use from 1937 to 1945. It was commonly called a Hanomag. General Details (SP Artillery) Specifications Operational Date(s) 1937 - 1945 Ordnance classification SdKfz 251/9 Quantity Produced 0 Weight 8 tonne Crew 3 M.G's small n/a M.G's large(>10mm) n/a Length 5.85 mtr Width 2.12 mtr Height 2.07 mtr Engine Details/Performance Max Road Speed 33 mph Max Cross Country Speed 16 mph Range Road 188 miles Range Cross Country 94 miles Fuel Type Petrol Fuel Capacity unknown Horse Power 100 hp Power/Weight 12 hp/tonne General Information The SdKfz 251/ 9 Ausf A,B,C 7.5cm StuK 37 L/24 was a Self Propelled Artillery vehicle designed in 1936, manufactured by Hanomag Borgward, it was based on the half track SdKfz 251 Ausf A chassis and was in use from 1937 to 1945. It was commonly called a Hanomag. The vehicle was powered by Maybach 'HL-42' petrol powerplant producing 100 HP which could drive the vehicle on roads at up to 33 mph with a range of about 188 miles before refuelling. Its cross country performance was good providing a max speed of about 16 mph and a range of about 94 miles. Its main armament consisted of a 7.5cm StuK 37 L/24 weighing 4.400 kg and with a maximum range of 6,250 metres. The SdKfz 251 series of vehicles were the first purpose built Armoured personel carriers. The vehicles could carry 10 panzer grenadiers in a small arms and shrapnel protected space. Armour Details Turret Front n/a Side n/a Rear n/a Top n/a Superstructure Front 10mm @ 33° (12mm) Side 8mm @ 35° (10mm) Rear 8mm @ 40° (10mm) Top n/a Hull Front 15mm @ 21° (16mm) Side 8mm @ 35° (10mm) Rear 8mm @ 30° (9mm) Top 6mm @ 90° (6mm) Armour (x)mm @ (y)° (Effective mm @ 0°) Effective Armour - Maximum 16 mm - Minimum 6 mm Weapon Details 7.5cm StuK 37 L/24 (Tank Gun) Calibre 75mm Length L/24 Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content K. Gr. rot Pz (AP Armor Piercing) 75mm 6.8Kg 385M/Sec Quoted Penetration 38mm@500m/30° Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.27 0.54 1.13 2.42 3.88 5.49 7.24 9.11 Penetration(mm@30°) 44 42 37 29 23 18 14 11 Penetration(mm@0°) 52 49 43 34 27 21 17 13 Hit Probability(%) 93 90 83 52 14 3 3 2 7.5 cm Sprgr.34 - short (HE High Explosive) 75mm 4.4Kg 385M/Sec 0.454Kg explosive Maximum Range not shown as gun elevation is limited Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.27 0.55 1.15 2.54 4.21 6.2 8.56 11.36 lateral dispersion means the side to side variation of the shell from the aiming point 50%(CEP) of shells land within +/- (mtr) 0.12 0.12 0.12 0.21 0.32 0.43 0.53 0.64 80% of shells land within +/- (mtr) 0.15 0.15 0.15 0.27 0.41 0.55 0.68 0.82 95% of shells land within +/- (mtr) 0.24 0.24 0.24 0.41 0.63 0.84 1.04 1.25 range dispersion means the back to front variation of the shell from the aiming point 50%(CEP) of shells land within +/- (mtr) 0.15 0.15 0.15 0.27 0.40 0.53 0.67 0.80 80% of shells land within +/- (mtr) 0.19 0.19 0.19 0.35 0.51 0.68 0.86 1.02 95% of shells land within +/- (mtr) 0.29 0.29 0.29 0.53 0.78 1.04 1.31 1.57 Direct Fire Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.26 0.53 1.09 2.31 3.67 Hit Probability(%) 93 90 83 52 14 Blast/Fragmentation Effects Burst radius Infantry in open 99% kill 3 mtr Burst radius Infantry in open 66% kill 6 mtr Burst radius Infantry in open 33% kill 16 mtr  Armour Penetration inc roof at 1 mtr 1 mm An explosion within 3 mtr of infantry in the open will cause 99% casualties - lethal. An explosion within 6 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. An explosion within 16 mtr of infantry in the open will cause 33% casualties. The blast effect of this shell exploding within 1 mtr of an armoured vehicle will penetrate 1 mm of the tank armour including the roof. 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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