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Germany
Neubaufahrzeug development
Ordnance classification - PzKpfw Nb.Fz
 

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The Neubaufahrzeug development was a Heavy Tank designed in 1934, manufactured by Rheinmetal and was in use from 1936 to 1937.

Flag of World War 2 Germany

General Details (Heavy Tank)
Specifications
Operational Date(s)1936 - 1937
Ordnance classificationPzKpfw Nb.Fz
Quantity Produced2
Weight23.4 tonne
Crew6
M.G's small3
M.G's large(>10mm)n/a
Length6.65 mtr
Width2.90 mtr
Height2.90 mtr
Engine Details/Performance
Max Road Speed19 mph
Max Cross Country Speed6 mph
Range Road120 miles
Range Cross Country48 miles
Fuel TypePetrol
Fuel Capacity475 gal
Horse Power290 hp
Power/Weight12 hp/tonne
General Information
The Neubaufahrzeug development was a Heavy Tank designed in 1934, manufactured by Rheinmetal and was in use from 1936 to 1937.

The vehicle was powered by BMW '290 hp BMW Va' petrol powerplant producing 290 HP which could drive the vehicle on roads at up to 19 mph with a range of about 120 miles before refuelling. Its cross country performance was adequate providing a max speed of about 6 mph and a range of about 48 miles.

It was armed with 3 light machine guns. Its main armament consisted of a 7.5cm KwK 37 L/24 which could penetrate 68 mm of flat plate at 200 metres Its main armament consisted and a 3.7cm KwK 36 which could penetrate 41 mm of flat plate at 200 metres.

These were the early development of the German medium and heavy tank models. They were multi-turreted, heavy and slow, they were not considered successful, which led to only five being produced, two of which were development models made of mild steel.

The three production models were primarily used for propaganda purposes and training, though three took part in the Battle of Norway in 1940.

It would seem that three Nb.Fz's were attached to the 1st Panzer Army and destroyed in battle with Soviet BT-7 tanks in present-day Ukraine in June 1941.

Armour Details
Turret
Front8mm@10°(8mm)
Side8mm@10°(8mm)
Rear8mm@10°(8mm)
Top8mm@85°(8mm)
Superstructure
Front8mm@70°(23mm)
Side8mm@(8mm)
Rear8mm@(8mm)
Top8mm@90°(8mm)
Hull
Front8mm@20°(9mm)
Side8mm@(8mm)
Rear8mm@(8mm)
Top8mm@90°(8mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 23 mm - Minimum 8 mm

Weapon Details
Flag
7.5cm KwK 37 L/24
7.5cm Kampfwagenkanone 37 L/24
(translates as Tank Gun)
Blank
History
This gun was fitted to the early Panzer IV and StuG III vehicles
Manufactured1937 - 1942
Calibre75mm
LengthL/24

Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
K. Gr. rot Pz
(AP Armor Piercing)
75mm 6.8Kg 385M/Sec
Quoted Penetration 38mm@500m/30°
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.26 0.53 1.1 2.33 3.71 5.28 7.09 9.17
Penetration(mm@30°) 63 58 53 46 40 35 30 25
Penetration(mm@0°) 73 68 62 54 47 41 35 29
Hit Probability(%) 98 98 98 54 22 6 2 1

7.5 cm Sprgr.34 - short
(HE High Explosive)
75mm 4.4Kg 385M/Sec 0.454Kg explosive
Maximum Range 6250 Mtr
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.26 0.53 1.1 2.33 3.71 5.29 7.09 9.17
Direct Fire
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.26 0.53 1.1 2.33 3.71 5.29 7.09 9.17
Hit Probability(%) 98 98 98 54 22 6 2 1
Blast/Fragmentation Effects
Burst radius Infantry in open 99% kill3 mtr Burst radius Infantry in open 66% kill6 mtr
Burst radius Infantry in open 33% kill16 mtr  Armour Penetration inc roof at 1 mtr1 mm
An explosion within 3 mtr of infantry in the open will cause 99% casualties - lethal.
An explosion within 6 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's.
An explosion within 16 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.
Weapon Details
Flag
3.7cm KwK 36
3.7cm Kampfwagenkanone 36
(translates as Tank Gun)
Blank
History
Mostly used on the early Panzer III it was the same gun as the 37mm PAK 35/36, becoming obsolete by late 1941 as the Allied tanks armour thicknesses increased.
Manufactured1935 - 1941
Calibre37mm
LengthL/45
Rate of Fire13 rpm

Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
PzGr.18
(AP Armor Piercing)
37mm 0.66Kg 745M/Sec
Quoted Penetration 29mm @ 500mtr/0°
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.14 0.28 0.6 1.37 2.39 3.79 5.85 9.18
Penetration(mm@30°) 39 35 31 25 19 14 10 6
Penetration(mm@0°) 46 41 36 29 22 17 12 8
Hit Probability(%) 98 98 98 90 54 22 3 1

3.7cm Pzgr 40
(AP40 Armour Piercing Tungsten Cored)
37mm 0.35Kg 1020M/Sec
Quoted Penetration 64mm @ 100mtr/0°
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.1 0.21 0.46 1.12 2.12 3.86 7.61
Penetration(mm@30°) 58 51 44 33 24 15 8
Penetration(mm@0°) 67 60 51 39 28 18 10
Hit Probability(%) 98 98 98 96 60 22 2

3.7cm Sprgr Patr
(HE High Explosive)
37mm 0.61Kg 700M/Sec 0.025Kg explosive
Maximum Range not shown as gun elevation is limited
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.15 0.3 0.64 1.46 2.54 4.03 6.22 9.76
Direct Fire
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.15 0.3 0.64 1.46 2.54 4.03 6.22 9.76
Hit Probability(%) 98 98 98 88 44 15 3 1
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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