O-I Experimental
Tier 5 · japan · heavy
About
Development of this superheavy tank was initiated by Colonel Iwakuro from the Army Ministry of Japan. The project was carried out by the Mitsubishi company, therefore the vehicle became known as the Mi-To. In the army, the tank was designated the O-I. Details of the project are largely unknown.
Multi-turretMulti-weapon
Survivability
Hit points
870
View range
360 m
Signal range
300 m
Engine fire chance
20%
Armor (mm)
Front
Sides
Rear
Hull
130
70
70
Turret
130
75
75
Gun · 7.5 cm Tank Gun Type 3
Caliber
120 mm
Rate of fire
5.71 rpm
Reload
10.5 s
Aim time
2.9 s
Dispersion @ 100 m
0.54 m
Gun arc
10° / 20°
Traverse
33°/s
Ammo
100
Mobility
Top speed
30 km/h
Reverse
12 km/h
Engine
1100 hp
Power/weight
11.1 hp/t
Hull traverse
20°/s
Turret traverse
22°/s
Shells
ARMOR_PIERCING
360 dmg (270–450)
60 mm pen (45–75)
ARMOR_PIERCING
360 dmg (270–450)
140 mm pen (105–175)
HIGH_EXPLOSIVE
440 dmg (330–550)
60 mm pen (45–75)
Marks of Excellencesample size 69 · updated 5/23/2026
1 mark
520
avg damage
2 marks
769
avg damage
3 marks
0
avg damage