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Britain
M3 Grant Command Tank (Grant)

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The Medium tank M3 Grant was was an American M3 Lee tank modified by replacing the original turret by a lower profile one with a large overhang at the rear to take radios.

Photo of M3 Grant Command Tank (Grant)
M3 Grant Command Tank(Grant) scale illustration

General Details
Specifications
Operational Date(s)1940
Quantity Produced0
Weightunknown
Crew6
M.G's small3
M.G's large(>10mm)n/a
Length5.69 mtr
Width2.74 mtr
Height3.15 mtr
Engine Details/Performance
Max Road Speed21 mph
Max Cross Country Speed16 mph
Range Road120 miles
Range Cross Countryunknown
Fuel TypePetrol
Fuel Capacity175 gal
Horse Power340 hp
Power/Weightunknown
General Information
The Medium tank M3 Grant was was an American M3 Lee tank modified by replacing the original turret by a lower profile one with a large overhang at the rear to take radios.

The engine, a Wright-Continental 340hp petrol engine drove the front drive gear, this then went underneath three bogies each containing two road wheels, the track continued to the rear idler then back via 3 return rollers on the top of the bogies.

The armament consisted of a hull mounted 75mm gun with dummy barrel in the turret and additional radio gear.

Armour Details
Turret
Front51mm@47°(75mm)
Side51mm@(51mm)
Rear51mm@(51mm)
Top22mm@90°(22mm)
Superstructure
Front51mm@45°(72mm)
Side38mm@(38mm)
Rear38mm@(38mm)
Top13mm@87°(13mm)
Hull
Front45mm@45°(64mm)
Side38mm@(38mm)
Rear38mm@(38mm)
Top13mm@87°(13mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 75 mm - Minimum 13 mm



Weapon Details
Flag
75mm Gun M3 L/40 Blank
Calibre75mm
LengthL/40
 
Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
AP(AP)
75mm 6.32Kg 619M/Sec
Quoted Penetration 70mm@500m
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.16 0.33 0.68 1.45 2.31 3.29 4.41 5.7
Penetration(mm@30°) 95 88 79 70 61 52 45 38
Penetration(mm@0°) 110 102 92 81 71 61 52 44
Hit Probability(%) 98 98 98 88 54 25 15 3

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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