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.
General Details
Specifications
Operational Date(s)
1942
Ordnance classification
Quantity Produced
6281
Weight
unknown
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
unknown
Fuel Type
Petrol
Fuel Capacity
175 gal
Horse Power
400 hp
Power/Weight
unknown
General Information
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.
Armour Details
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)
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
Weapon Details
75mm Gun M3 L/40
Calibre
75mm
Length
L/40
Ammunition Details
Name/Id
Calibre Weight MVelocity
Explosive Content
AP(AP)
75mm 6.32Kg 619M/Sec
Quoted Penetration 70mm@500m
Range(Mtr)
100
200
400
800
1200
1600
2000
2400
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.
