Canada Cruiser Mk VIII (Cromwell VII) (Cromwell VII)
The Cromwell tank was designed as a heavy cruiser tank that could rapidly move and provide good A/T performance, in appearance it looked like the Cavalier.
General Details
Specifications
Operational Date(s)
1944
Ordnance classification
Quantity Produced
0
Weight
unknown
Crew
5
M.G's small
1
M.G's large(>10mm)
n/a
Length
6.40 mtr
Width
2.92 mtr
Height
2.49 mtr
Engine Details/Performance
Max Road Speed
32 mph
Max Cross Country Speed
18 mph
Range Road
166 miles
Range Cross Country
unknown
Fuel Type
Petrol
Fuel Capacity
116 gal
Horse Power
600 hp
Power/Weight
unknown
General Information
The Cromwell tank was designed as a heavy cruiser tank that could rapidly move and provide good A/T performance, in appearance it looked like the Cavalier.
The vehicle had a rear Rolls Royce Meteor engine producing 600hp driving the tracks, towards the main front idler over the 5 large road wheels, round the idler and back under the roadwheels in the standard Christie style.
The Mark VII was the final version of the Cromwell with added armour, wider tracks and a lower ratio final drive.
Armour Details
Turret
Front
76mm
@
0°
(76mm)
Side
63mm
@
0°
(63mm)
Rear
57mm
@
0°
(57mm)
Top
20mm
@
81°
(20mm)
Superstructure
Front
63mm
@
0°
(63mm)
Side
32mm
@
0°
(32mm)
Rear
32mm
@
0°
(32mm)
Top
20mm
@
90°
(20mm)
Hull
Front
57mm
@
0°
(57mm)
Side
32mm
@
0°
(32mm)
Rear
32mm
@
0°
(32mm)
Top
20mm
@
90°
(20mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 76 mm - Minimum 20 mm
Weapon Details
Ordnance Q.F. 75mm (Tank Gun)
History
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
Calibre
75mm
Length
L/32
Ammunition Details
Name/Id
Calibre Weight MVelocity
Explosive Content
AP(AP)
75mm 6.58Kg 618M/Sec
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
5.71
Penetration(mm@30°)
98
91
83
73
64
55
46
38
Penetration(mm@0°)
114
106
96
85
74
64
54
45
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.