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Britain
M3 Grant (Grant) |
| The M3 Grant was designed in 1940 based on the existing fully tracked Medium Tank and was in use from 1941 to 1942. |
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| | Specifications | | Operational Date(s) | 1941 - 1942 | | Quantity Produced | 0 | | Weight | 27 tonne | | Crew | 6 | | M.G's small | 3 | | M.G's large(>10mm) | n/a | | Length | 5.69 mtr | | Width | 2.74 mtr | | Height | 3.15 mtr | | Engine Details/Performance | | Max Road Speed | 21 mph | | Max Cross Country Speed | 11 mph | | Range Road | 120 miles | | Range Cross Country | 48 miles | | Fuel Type | Petrol | | Fuel Capacity | 175 gal | | Horse Power | 340 hp | | Power/Weight | 12 hp/tonne | | | General Information | The M3 Grant was designed in 1940 based on the existing fully tracked Medium Tank and was in use from 1941 to 1942.
The vehicle was powered by Wright 'Continental R975 EC2' petrol powerplant producing 340 HP which could drive the vehicle on roads at up to 21 mph with a range of about 120 miles before refuelling. Its cross country performance was good providing a max speed of about 11 mph and a range of about 48 miles.
It was armed with 3 light machine guns. Its main armament consisted of an Ordnance Q.F. 37mm Mk 1 which could penetrate 34 mm of flat plate at 800 metres Its main armament consisted and an Ordnance Q.F. 75mm which could penetrate 85 mm of flat plate at 800 metres.
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 Grant was the British version. | |
| | Turret | | Front | | 51mm | @ | 47° | (75mm) | | Side | | 51mm | @ | 5° | (51mm) | | Rear | | 51mm | @ | 5° | (51mm) | | Top | | 22mm | @ | 90° | (22mm) |
| | Superstructure | | Front | | 51mm | @ | 45° | (72mm) | | Side | | 38mm | @ | 0° | (38mm) | | Rear | | 38mm | @ | 0° | (38mm) | | Top | | 13mm | @ | 87° | (13mm) |
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| Hull | | Front | | 45mm | @ | 45° | (64mm) | | Side | | 38mm | @ | 0° | (38mm) | | Rear | | 38mm | @ | 0° | (38mm) | | Top | | 13mm | @ | 87° | (13mm) |
| | Armour (x)mm @ (y)° (Effective mm @ 0°) | | Effective Armour - Maximum 75 mm - Minimum 13 mm |
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| Weapon Details |
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Ordnance Q.F. 37mm Mk 1
(Anti Aircraft) |
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| | History | |
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| | Used both as an Anti Tank gun and as a Tank gun the 2pdr was first used by the Belgians in 1939 and the majority of the British guns were captured by the Germans at Dunkirk and given their designation of 4.0 cm Pak 192(e) or 4.0 cm Pak 154(b). |
| | Manufactured | 1936 - 1944 |
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| | Calibre | 37mm |
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| | Length | L/52 |
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| | Rate of Fire | 22 rpm |
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| Ammunition Details |
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| Name/Id |
Calibre Weight MVelocity |
Explosive Content |
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37 mm sk ptr m/34 slpprj m/38
(AP Armor Piercing)
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37mm 0.74Kg 785M/Sec | |
| Quoted Penetration 40mm @ 400mtr/30° ( ≈ 46mm/0°) |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.13 |
0.27 |
0.57 |
1.3 |
2.27 |
3.6 |
5.55 |
8.73 |
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| Penetration(mm@30°) |
46 |
41 |
36 |
29 |
22 |
17 |
12 |
7 |
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| Penetration(mm@0°) |
54 |
48 |
42 |
34 |
26 |
20 |
14 |
9 |
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| Hit Probability(%) |
98 |
98 |
98 |
93 |
57 |
22 |
3 |
1 |
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37 mm sk ptr m/34 sgr m/43
(HE High Explosive)
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37mm 0.68Kg 805M/Sec | 0.210Kg explosive |
| Range(Mtr) | 1000 | 2000 | 3000 | 4000 | 5000 | 6000 | 7000 | 8000 |
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| Flight Time(Secs) |
1.7 |
5.42 |
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| Direct Fire |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.13 |
0.26 |
0.56 |
1.27 |
2.21 |
3.51 |
5.42 |
8.5 |
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| Hit Probability(%) |
98 |
98 |
98 |
93 |
57 |
22 |
6 |
2 |
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| Blast/Fragmentation Effects |
| Burst radius Infantry in open 99% kill | 4 mtr |
Burst radius Infantry in open 66% kill | 8 mtr |
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| Burst radius Infantry in open 33% kill | 20 mtr |
Armour Penetration inc roof at 1 mtr | 0 mm |
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| An explosion within 4 mtr of infantry in the open will cause 99% casualties - lethal. |
| An explosion within 8 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. |
| An explosion within 20 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 not cause any significant armour damage. |
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37 mm sk ptr m/34 slpgr m/39
(HEAT High Explosive Anti-Tank)
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37mm 0.74Kg 775M/Sec | |
| Quoted Penetration 39mm @ 100mtr/30° ( ≈ 45mm/0°) |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.13 |
0.27 |
0.58 |
1.32 |
2.29 |
3.64 |
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| Penetration(mm@30°) |
39 |
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| Penetration(mm@0°) |
39 |
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| Hit Probability(%) |
98 |
98 |
98 |
90 |
57 |
22 |
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| Weapon Details |
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Ordnance Q.F. 75mm
(Tank Gun) |
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| | History | |
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| | This was a temporary fix to the problem of 6pdr guns not having a powerful enough HE shell. It was created by boring out the British 57mm 6pdr to take the American 75mm AP/HE shells, which reduced the Anti Tank performance but provided HE support. |
| | Manufactured | 1943 - 1945 |
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| | Calibre | 75mm |
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| | Length | L/32 |
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| Ammunition Details |
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| Name/Id |
Calibre Weight MVelocity |
Explosive Content |
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AP M72 U.S.
(AP Armor Piercing)
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75mm 6.58Kg 618M/Sec | |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.16 |
0.33 |
0.68 |
1.45 |
2.31 |
3.29 |
4.41 |
5.71 |
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| Penetration(mm@30°) |
98 |
91 |
83 |
73 |
64 |
55 |
46 |
38 |
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| Penetration(mm@0°) |
114 |
106 |
96 |
85 |
74 |
64 |
54 |
45 |
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| Hit Probability(%) |
98 |
98 |
98 |
88 |
54 |
25 |
15 |
3 |
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HE M48
(HE High Explosive)
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75mm 6.76Kg 625M/Sec | 0.680Kg explosive |
| Maximum Range not shown as gun elevation is limited |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.16 |
0.33 |
0.68 |
1.43 |
2.29 |
3.25 |
4.36 |
5.65 |
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| Direct Fire |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.16 |
0.33 |
0.68 |
1.43 |
2.29 |
3.25 |
4.36 |
5.65 |
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| Hit Probability(%) |
98 |
98 |
98 |
88 |
57 |
25 |
15 |
3 |
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| Blast/Fragmentation Effects |
| Burst radius Infantry in open 99% kill | 3 mtr |
Burst radius Infantry in open 66% kill | 6 mtr |
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| Burst radius Infantry in open 33% kill | 16 mtr |
Armour Penetration inc roof at 1 mtr | 2 mm |
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| 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 2 mm of the tank armour including the roof. |
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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.
 
© WWIITanks 1980-2024
If you have any information, or comments on our site,
please E-Mail Simon at
wwiitanks@villagenet.co.uk
Page Last Updated: 2023-04-07 10:56:34
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![photo of Ordnance Q.F. 37mm Mk 1 from Wikipedia](javascript:launch("https://upload.wikimedia.org/wikipedia/commons/7/7d/2-pounder_gun.jpg"))
![photo of Ordnance Q.F. 75mm from Wikipedia](javascript:launch("https://upload.wikimedia.org/wikipedia/commons/1/1e/QF_75_mm_gun_on_Cromwell_tank.jpg"))
