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Germany
7.5cm Pak 40/3 L/46 Gw 38(t)r Ausf M (Marder III)
Ordnance classification - SdKfz 138

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The 7.5cm Pak 40/3 L/46 Gw 38(t)r Ausf M was designed in 1941, manufactured by BMM based on the existing fully tracked Czech LT Vz 38 and was in use from 1942 to 1945.

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Photo of 7.5cm Pak 40/3 L/46 Gw 38(t)r Ausf M (Marder III)
7.5cm Pak 40/3 L/46 Gw 38(t)r Ausf M(Marder III) scale illustration

General Details
Specifications
Operational Date(s)1942 - 1945
Ordnance classificationSdKfz 138
Quantity Produced417
Weight10.8 tonne
Crew4
M.G's small1
M.G's large(>10mm)n/a
Length4.95 mtr
Width2.15 mtr
Height2.48 mtr
Engine Details/Performance
Max Road Speed25 mph
Max Cross Country Speed13 mph
Range Road150 miles
Range Cross Country60 miles
Fuel TypePetrol
Fuel Capacityunknown
Horse Power125 hp
Power/Weight11 hp/tonne
General Information
The 7.5cm Pak 40/3 L/46 Gw 38(t)r Ausf M was designed in 1941, manufactured by BMM based on the existing fully tracked Czech LT Vz 38 and was in use from 1942 to 1945.

The vehicle was powered by Praga 'EPA/2' petrol powerplant producing 125 HP which could drive the vehicle on roads at up to 25 mph with a range of about 150 miles before refuelling. Its cross country performance was good providing a max speed of about 13 mph and a range of about 60 miles.

It was armed with 1 light machine gun. This version was a successful matching of a PaK 40 75mm Anti-Tank gun with the PzKpfw 38(t) chassis to create a mobile anti-tank platform

Armour Details
Turret
Front6mm@28°(7mm)
Side10mm@16°(10mm)
Rear10mm@17°(10mm)
Topn/a
Superstructure
Front10mm@30°(12mm)
Side10mm@15°(10mm)
Rear10mm@(10mm)
Top8mm@90°(8mm)
Hull
Front20mm@15°(21mm)
Side15mm@(15mm)
Rear10mm@41°(13mm)
Top10mm@90°(10mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 21 mm - Minimum 10 mm

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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