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United States
Medium M4A1 (Sherman II) |
| The Medium M4A1 was designed in 1941 based on the existing fully tracked Sherman and was in use from 1942 to 1980. |
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| | Specifications | | Operational Date(s) | 1942 - 1980 | | Quantity Produced | 6281 | | Weight | 30 tonne | | Crew | 5 | | M.G's small | 3 | | M.G's large(>10mm) | n/a | | Length | 5.88 mtr | | Width | 2.63 mtr | | Height | 2.77 mtr | | Engine Details/Performance | | Max Road Speed | 24 mph | | Max Cross Country Speed | 17 mph | | Range Road | 120 miles | | Range Cross Country | 48 miles | | Fuel Type | Petrol | | Fuel Capacity | 175 gal | | Horse Power | 350 hp | | Power/Weight | 11 hp/tonne | | | General Information | The Medium M4A1 was designed in 1941 based on the existing fully tracked Sherman and was in use from 1942 to 1980.
The vehicle was powered by Continental 'R957C1' petrol powerplant producing 350 HP which could drive the vehicle on roads at up to 24 mph with a range of about 120 miles before refuelling. Its cross country performance was good providing a max speed of about 17 mph and a range of about 48 miles.
It was armed with 3 light machine guns which were 0.3 inch Browning Machine Gun M1919A4s. Its main armament consisted of a 75mm Gun M3 L/40 which could penetrate 81 mm of flat plate at 800 metres
The Sherman II M4A1 was a similar shape to the M4 but had a curved cast hull which provided less flat surfaces for AT hits, this was mostly noticable at the top of the hull next to the turret.
The cast turret carrying the gyro stabilised 75mm Gun M3 was the same as that of the Sherman I.
It was driven by a Continental 350HP air cooled engine with the drive sprocket at the front, the track went under 3 double bogie wheels onto the idler, then back over 3 return rollers. | |
| | Turret | | Front | | 75mm | @ | 0° | (75mm) | | Side | | 50mm | @ | 0° | (50mm) | | Rear | | 50mm | @ | 0° | (50mm) | | Top | | 25mm | @ | 90° | (25mm) |
| | Superstructure | | Front | | 50mm | @ | 45° | (71mm) | | Side | | 50mm | @ | 0° | (50mm) | | Rear | | 38mm | @ | 0° | (38mm) | | Top | | 19mm | @ | 90° | (19mm) |
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| Hull | | Front | | 40mm | @ | 45° | (57mm) | | Side | | 40mm | @ | 0° | (40mm) | | Rear | | 38mm | @ | 0° | (38mm) | | Top | | 19mm | @ | 90° | (19mm) |
| | Armour (x)mm @ (y)° (Effective mm @ 0°) | | Effective Armour - Maximum 75 mm - Minimum 19 mm |
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| Weapon Details |
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0.3 inch Browning Machine Gun M1919A4
(Machine Gun) x 2 |
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| | Manufacturer | Browning |
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| | Manufactured | 1919 - 1945 |
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| | Calibre | 7.60mm |
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| | Length | L/80 |
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| | Rate of Fire | 480 rpm |
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| | Number of Rounds | 6000
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| Ammunition Details |
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| Name/Id |
Calibre Weight MVelocity |
Explosive Content |
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.30-06 Springfield
(BALL Standard Small Arms)
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7.62mm 0.012Kg 820M/Sec | |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.15 |
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| Penetration(mm@30°) |
2 |
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| Penetration(mm@0°) |
3 |
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| Hit Probability(%) |
98 |
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| Weapon Details |
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75mm Gun M3 L/40 |
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| | Calibre | 75mm |
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| | Length | L/40 |
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| | Number of Rounds | 100
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| Ammunition Details |
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| Name/Id |
Calibre Weight MVelocity |
Explosive Content |
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AP
(AP Armor Piercing)
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75mm 6.32Kg 619M/Sec | |
| Quoted Penetration 70mm@500m |
| 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 |
5.7 |
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| Penetration(mm@30°) |
95 |
88 |
79 |
70 |
61 |
52 |
45 |
38 |
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| Penetration(mm@0°) |
110 |
102 |
92 |
81 |
71 |
61 |
52 |
44 |
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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 5000 Mtr |
| Range(Mtr) | 1000 | 2000 | 3000 | 4000 | 5000 | 6000 | 7000 | 8000 |
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| Flight Time(Secs) |
1.85 |
4.36 |
8 |
13.72 |
24.01 |
48.06 |
168.4 |
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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: 2023-01-10 07:35:11
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