O-I Experimental
O-I Exp.
Tank ID 5729
Vehicle description
Wargaming Tankopedia
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.
Description from the Wargaming Tankopedia · Language selected automatically
Technical profile
Standard configuration
Hit points
920
Weight
99.1 t
Forward speed
25 km/h
Reverse speed
12 km/h
View range
360 m
Signal range
300 m
Armour
| Front | Sides | Rear | |
|---|---|---|---|
| Hull | 125 | 70 | 70 |
| Turret | 125 | 75 | 75 |
Engine: 2x Kawasaki Type 98 V-12 (550) · 1,100 hp
Radio: Type 94 Mk. 4 Otsu
Armament
Standard gun and ammunition
12 cm Short Barrel Gun
Shell types
Penetration 45 / 60 / 75 mm
Penetration 105 / 140 / 175 mm
Penetration 45 / 60 / 75 mm
Marks of Excellence
Damage thresholds
Combined Damage (Damage + Assist + Tracking)
Approximation based on WN8 expected values — not an official Wargaming figure.
WN8 Expected Values
XVM reference
XVM Expected Values for WN8 calculation (per battle)
Community stats
Measured, not estimated
Average across every profile stored on WG-Watch — real battles instead of expected values.
Win rate
56.18 %
Avg. WN8
2,018
Battles
22,755
As of Aug 31, 2026
Rank 24 of 87 at Tier V
Best players on this tank
By WN8
From the stored profiles, minimum 50 battles on this vehicle. Updated daily.
| # | Player | WN8 | Battles | Win rate |
|---|---|---|---|---|
| 1 | m00h eu | 5,900 | 112 | 70.54 % |
| 2 | BigPrank eu | 5,238 | 68 | 69.12 % |
| 3 | Yzne eu | 5,230 | 74 | 63.51 % |
| 4 | GehakteMolen eu | 4,427 | 235 | 70.64 % |
| 5 | skill4ltu eu | 3,835 | 151 | 68.87 % |
| 6 | Cent72 na | 3,780 | 50 | 68.00 % |
| 7 | Xilense eu | 3,745 | 205 | 70.24 % |
| 8 | Mr__Buttons na | 3,667 | 3,782 | 57.69 % |
| 9 | SAMCRO81 eu | 3,538 | 512 | 64.65 % |
| 10 | ReAze eu | 3,308 | 55 | 72.73 % |
