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Britain
Cruiser MK VIII (Challenger A30) |
| The Cruiser MK VIII was designed in 1942, manufactured by Rolls Royce based on the existing fully tracked Cruiser Tank and was in use from 1944 to 1950. |
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Click photo for author, Public domain, via Wikimedia Commons
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| | Specifications | | Operational Date(s) | 1944 - 1950 | | Quantity Produced | 200 | | Weight | 32 tonne | | Crew | 5 | | M.G's small | 1 | | M.G's large(>10mm) | n/a | | Length | 8.10 mtr | | Width | 2.92 mtr | | Height | 2.77 mtr | | Engine Details/Performance | | Max Road Speed | 32 mph | | Max Cross Country Speed | 15 mph | | Range Road | 120 miles | | Range Cross Country | 48 miles | | Fuel Type | Petrol | | Fuel Capacity | 116 gal | | Horse Power | 600 hp | | Power/Weight | 18 hp/tonne | | | General Information | The Cruiser MK VIII was designed in 1942, manufactured by Rolls Royce based on the existing fully tracked Cruiser Tank and was in use from 1944 to 1950.
The vehicle was powered by Rolls Royce 'Meteor V-12' petrol powerplant producing 600 HP which could drive the vehicle on roads at up to 32 mph with a range of about 120 miles before refuelling. Its cross country performance was good providing a max speed of about 15 mph and a range of about 48 miles.
It was armed with 1 light machine gun , a 0.3 inch Browning Machine Gun M1919A4. Its main armament consisted of an Ordnance Q.F. 17pdr which could penetrate 186 mm of flat plate at 200 metres
The Challenger 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 6 large road wheels, round the idler and back under the roadwheels in the standard Christie style.
The Challenger was a redesigned Cromwell designed to take the 17pdr AT gun, however too many changes were needed and only a few vehicles saw service. | |
| | 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) |
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| 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 |
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| Weapon Details |
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0.3 inch Browning Machine Gun M1919A4
(Machine Gun) |
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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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| 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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Ordnance Q.F. 17pdr
(Anti Tank Gun) |
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| | Manufactured | 1942 - unknown |
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| | Calibre | 76.20mm |
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| | Length | L/55 |
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| Ammunition Details |
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| Name/Id |
Calibre Weight MVelocity |
Explosive Content |
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17pdr MkI - MkIII
(AP Armor Piercing)
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76.20mm 7.65Kg 950M/Sec | |
| Quoted Penetration 130mm@915m |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.11 |
0.22 |
0.44 |
0.94 |
1.5 |
2.13 |
2.85 |
3.69 |
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| Penetration(mm@30°) |
174 |
161 |
147 |
129 |
113 |
97 |
84 |
71 |
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| Penetration(mm@0°) |
201 |
186 |
170 |
150 |
131 |
113 |
97 |
82 |
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| Hit Probability(%) |
98 |
98 |
98 |
98 |
88 |
60 |
34 |
22 |
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17pdr HE/Red
(HE High Explosive)
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76.20mm 6.1Kg 550M/Sec | 0.480Kg 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) |
0.18 |
0.37 |
0.77 |
1.63 |
2.59 |
3.68 |
4.93 |
6.37 |
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| Direct Fire |
| Range(Mtr) | 100 | 200 | 400 | 800 | 1200 | 1600 | 2000 | 2400 |
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| Flight Time(Secs) |
0.18 |
0.37 |
0.77 |
1.63 |
2.59 |
3.68 |
4.93 |
6.37 |
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| Hit Probability(%) |
98 |
98 |
98 |
81 |
44 |
22 |
8 |
3 |
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| Blast/Fragmentation Effects |
| Burst radius Infantry in open 99% kill | 2 mtr |
Burst radius Infantry in open 66% kill | 5 mtr |
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| Burst radius Infantry in open 33% kill | 13 mtr |
Armour Penetration inc roof at 1 mtr | 1 mm |
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| An explosion within 2 mtr of infantry in the open will cause 99% casualties - lethal. |
| An explosion within 5 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. |
| An explosion within 13 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 1 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
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;)
