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Poland
Light Tank 7 TP improved

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The Light Tank 7 TP improved based on the existing Light Tank and was in use from 1937.

Flag of World War 2 Poland

General Details
Specifications
Operational Date(s)1937
Ordnance classification
Quantity Produced0
Weightunknown
Crew3
M.G's small1
M.G's large(>10mm)n/a
Length4.65 mtr
Width2.43 mtr
Height2.15 mtr
Engine Details/Performance
Max Road Speed20 mph
Max Cross Country Speedunknown
Range Road0 miles
Range Cross Countryunknown
Fuel TypeUnknown
Fuel Capacityunknown
Horse Power0 hp
Power/Weightunknown
General Information
The Light Tank 7 TP improved based on the existing Light Tank and was in use from 1937.

It was armed with 1 light machine gun. Its main armament consisted of a 37mm Bofors L/45 which could penetrate 42 mm of flat plate at 400 metres


Armour Details
Turret
Frontn/a
Siden/a
Rearn/a
Topn/a
Superstructure
Frontn/a
Siden/a
Rearn/a
Topn/a
Hull
Frontn/a
Siden/a
Rearn/a
Topn/a
Armour (x)mm @ (y)° (Effective mm @ 0°)



Weapon Details
Flag
37mm Bofors L/45 Blank
Calibre37mm
LengthL/45
 
Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
37 mm sk ptr m/34 slpprj m/38
(AP Armor Piercing)
37mm 0.74Kg 785M/Sec
Quoted Penetration 40mm @ 400mtr/30° ( ≈ 46mm/0°)
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.27 0.57 1.3 2.27 3.6 5.55 8.73
Penetration(mm@30°) 46 41 36 29 22 17 12 7
Penetration(mm@0°) 54 48 42 34 26 20 14 9
Hit Probability(%) 98 98 98 93 57 22 3 1



37 mm sk ptr m/34 sgr m/43
(HE High Explosive)
37mm 0.68Kg 805M/Sec 0.210Kg explosive
Range(Mtr)10002000300040005000600070008000
Flight Time(Secs) 1.7 5.42
Direct Fire
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.26 0.56 1.27 2.21 3.51 5.42 8.5
Hit Probability(%) 98 98 98 93 57 22 6 2
Blast/Fragmentation Effects
Burst radius Infantry in open 99% kill4 mtr Burst radius Infantry in open 66% kill8 mtr
Burst radius Infantry in open 33% kill20 mtr  Armour Penetration inc roof at 1 mtr0 mm
An explosion within 4 mtr of infantry in the open will cause 99% casualties - lethal.
An explosion within 8 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's.
An explosion within 20 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.


 
37 mm sk ptr m/34 slpgr m/39
(HEAT High Explosive Anti-Tank)
37mm 0.74Kg 775M/Sec
Quoted Penetration 39mm @ 100mtr/30° ( ≈ 45mm/0°)
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.27 0.58 1.32 2.29 3.64
Penetration(mm@30°) 39
Penetration(mm@0°) 39
Hit Probability(%) 98 98 98 90 57 22

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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Page Last Updated: 2023-01-13 07:25:21

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