Hi.
Now some "What If...":
If the japanese industry had enough resources in 1943 maybe the U.S. forces had met these tanks in 1944 and 1945:
type 4 heavy tank Chi-To:
During the trials for better tanks after the Nomonhan-Incident the need for tanks with thicker armour was seen by the Tank School. As the standard
suspension first used on the type 97 Chi-Ha was only usable for tanks up to 22 t the decision was made to develop a enlarged version of this
suspension with 7 or 8 roadwheels for tanks up to 50 t weight.
Mitsubishi developed a larger superstructure from the type 1 Chi-He which was done in late 1943. In 1944 the 7 wheel version was ready for trials.
First design studies of the tank saw the use of a 57 mm tank gun in an enlarged 3 men turret.
As the development of the 57 mm anti tank/tank gun was a failure and the type 3 75 mm tank gun was a kind of interim solution until a tank gun was
developed from the type 88 aa-gun the tank was tested without main armory in late 1944 and found very good.
Problems with the stability of the new type 5 75 mm tank gun made a redevelopment necessary and so the tank gun wasn´t ready before spring 1945.
During trials after installation of the gun the tank named type 4 medium tank (it was in fact a heavy tank following japanese designations as the
weight was more than 20 t) Chi-To was capable to penetrate the US medium M4´s frontal armour at 1200 m.
Due to a massive lack of raw materials only six prototypes were built and only two of them had the type 5 75 mm tank gun installed. The tank had
almost the same abilities as the german Panzer V Panther minus the armour. Plans for an uparmouring of the tank were made for the serial
production.
Data:
Built by:
Mitsubishi
- Weight:
30 t
crew:
5 men
armour:
superstructure: frontal 75 mm, sides 35 mm, back 25 mm
turret: frontal 75 mm, sides/back 50 mm
lenght:
6420 mm
width:
2870 mm
height:
2870 mm
ground clearance:
420 mm
fording:
1200 mm
trench crossing:
2700 mm
gradient:
35°
engine:
Mitsubishi type 4 12-cylinder diesel
Power:
400 HP at 1800 rpm
speed on road:
45 km/h
range:
250 km
power/weight ratio:
13,8 HP/t
armament turret:
1 X type 5 75 mm tank gun
1 X type 97 7,7 mm mg coaxial
hull armament:
1 X type 97 7,7 mm mg
type 5 heavy tank Chi-Ri:
In 1944 the decision was made to built a heavy tank based on the informations gathered from the german Tiger and Panther tanks bought in 1943 and
issued to the Wehrmacht after trials in Germany.
The use of a 88 mm tank gun was decided and such a tank gun was developed from the type 99 88 mm aa-gun. The tank was planned with a weight of 45 t
and so the new 8 wheel suspension was taken.
The hexagonal turret of the type 3 medium tank was enlarged and a mg port were installed on either side of the turret.
A type 1 37 mm tank gun and a machine gun was installed on the left in the hull next to the driver. In summer 1945 a prototype was built and movement
trials were made. The development of the type 5 88 mm tank gun was delayed and so for shooting trials a type 5 75 mm tank gun was installed. The tank
was named type 5 medium tank Chi-Ri.
On the trial vehicle the armour thickness was limited. For the production series maximum armour thicknesses of 105 mm and later 130 mm were planned.
Additionally the installation of the 105 mm tank gun tested in summer 1945 was prepared. Further design studies for a successor with 150 mm maximum
armour and a modified 120 mm naval gun or 127 mm twin naval gun were also made.
As there was limited time a BMW 12-cylinder water-cooled gasoline engine was used for the prototype. A diesel motor had to be developed. The surrender
of Japan stopped all further development. Equipped with the type 5 105 mm tank gun this vehicle would have been capable to destroy all other tanks on
the battlefield. The prototype was tested at Aberdeen Profing Ground and scrapped in 1946.
Data:
Built by:
Mitsubishi
- Weight:
37 t
crew:
5 men
armour:
superstructure: frontal 75 mm, sides 35 mm, back 25 mm
turret: frontal 75 mm, sides/back 50 mm
lenght:
7300 mm
width:
3050 mm
height:
3050 mm
track width:
600 mm
ground clearance:
400 mm
fording:
1200 mm
trench crossing:
2800 mm
gradient:
30°
engine:
BMW 12-cylinder water-cooled gasoline
Power:
600 HP at 1500 rpm
speed on road:
45 km/h
range:
250 km
power/weight ratio:
16,2 HP/t
armament turret:
1 X type 5 88 mm tank gun (planned)
1 X type 97 7,7 mm mg coaxial
1 X type 97 7,7 mm mg interchangeable
hull armament:
1 X type 1 37 mm tank gun
1 X type 97 7,7 mm mg
type 5 tank hunter Na-To:
Based on the chassis of the type 4 Chi-To a series of vehicles were planned. The motor was moved to the front and protected by 12 mm armour plates.
The driver and a wireless operator were placed in a cabin behind the motor. The rear of the vehicle could be used as transport platform or platform
for different weapons.
One version was equipped with a type 5 75 mm tank gun in a special gun mount and produced as type 5 tank hunter Na-To. During trials the tank
destroyer was found very effective.
Until May 1945 between 6 and 10 vehicles were built and sent to China for service trials.
Data:
Built by:
Osaka Army Arsenal
- Weight:
15 t
crew:
7 men
armour:
superstructure: frontal 12 mm, sides 12 mm, back 12 mm
fighting compartment: frontal 12 mm, sides/back 10 mm,
lenght:
5800 mm
width:
2400 mm
height:
2750 mm
engine:
Mitsubishi 8-cylinder gasoline
Power:
165 HP at 2000 rpm
speed on road:
40 km/h
power/weight ratio:
11 HP/t
armament fighting compartment:
1 X type 5 75 mm tank gun
type 5 tank destroyers Ho-Ri I and Ho-Ri II:
In 1945 a 105 mm tank gun became ready for production.
Based on the type 5 heavy tank designs for a heavy tank destroyer were made influenced by reports of the german Jagdpanther and Jagdtiger.
Two different prototypes were ordered for late 1945:
Yours
tom!