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USSR
T-40A Amphibious

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The T-40A Amphibious based on the existing Light Tank and was in use from 1942.

Flag of World War 2 Union Soviet Socialist Republics

General Details
Specifications
Operational Date(s)1942
Ordnance classification
Quantity Produced181
Weightunknown
Crew2
M.G's small1
M.G's large(>10mm)n/a
Length4.31 mtr
Width2.35 mtr
Height1.99 mtr
Engine Details/Performance
Max Road Speed26 mph
Max Cross Country Speed17 mph
Range Road210 miles
Range Cross Country100 miles
Fuel TypeUnknown
Fuel Capacity45 gal
Horse Power85 hp
Power/Weightunknown
General Information
The T-40A Amphibious based on the existing Light Tank and was in use from 1942.

It was armed with 1 light machine gun. Its main armament consisted of a 20mm ShVAK automatic cannon which could penetrate 7 mm of flat plate at 400 metres


Armour Details
Turret
Front14mm@30°(16mm)
Side10mm@10°(10mm)
Rear7mm@(7mm)
Top7mm@90°(7mm)
Superstructure
Front14mm@30°(16mm)
Side13mm@(13mm)
Rear13mm@(13mm)
Top10mm@90°(10mm)
Hull
Front13mm@30°(15mm)
Side13mm@(13mm)
Rear9mm@(9mm)
Top10mm@90°(10mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 16 mm - Minimum 10 mm



Weapon Details
Flag
20mm ShVAK automatic cannon Blank
History
Designed as an aircraft cannon was installed on the T-38 and T-60 light tanks
Calibre20mm
LengthL/62
 
Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
20mm AP
(AP Armor Piercing)
20mm 0.099Kg 750M/Sec
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.14 0.3 0.67
Penetration(mm@30°) 10 8 6
Penetration(mm@0°) 12 10 7
Hit Probability(%) 98 98 98



20mm HE
(HE High Explosive)
20mm 0.096Kg 770M/Sec 0.007Kg explosive
Range(Mtr)10002000300040005000600070008000
Flight Time(Secs)
Direct Fire
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.14 0.29 0.65 1.75 3.97
Hit Probability(%) 98 98 98 77 22 0
Blast/Fragmentation Effects
Burst radius Infantry in open 99% kill0 mtr Burst radius Infantry in open 66% kill0 mtr
Burst radius Infantry in open 33% kill1 mtr  Armour Penetration inc roof at 1 mtr0 mm
An explosion within 0 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's.
An explosion within 1 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.

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.

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