O-I Experimental
Heavy Tank Tier 5 JapanO-I Experimental is a tier 5 heavy tank from Japan in World of Tanks. This is a researchable tech-tree vehicle.
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The O-I Experimental has 736 hit points , 125mm of frontal hull armor , and a top speed of 25 km/h. . The vehicle can equip 3 different gun configurations, allowing for varied playstyles.
Hull & survivability
| Hit points (HP) | 736 |
|---|---|
| Weight | 69.1 t |
| Hull armor (F / S / R) | 125 / 70 / 70 mm |
The front-to-side armor ratio is 1.8:1.
Mobility
| Top forward speed | 25 km/h |
|---|---|
| Top reverse speed | 12 km/h |
Forward-to-reverse speed ratio is 2.1:1. Reverse speed is limited, so pre-aim and exposure timing matter more on this vehicle.
Camouflage
| Camo (stationary) | 3.8% |
|---|---|
| Camo (moving) | 1.9% |
Available guns (3)
| Gun | Tier | Damage | Pen | Reload | RoF |
|---|---|---|---|---|---|
| 12 cm Short Barrel Gun | 5 | — | — | 10.5s | — |
| 7.5 cm Tank Gun Type 3 | 4 | — | — | 3.6s | — |
| 7.5 cm Tank Gun Type 5 | 5 | — | — | 3.7s | — |
How O-I Exp. compares to its peers
There are 17 tier 5 heavy tanks in WoT, including the O-I Exp.. Its 736 HP places it in the top 31% for hit points among same-tier heavy tanks (peer average: 707). Frontal hull armor of 125mm ranks in the top 12% for the class (peer average: 93mm). Top forward speed of 25 km/h is faster than 0% of peer vehicles in this tier and class.
Direct comparisons
- O-I Exp. vs BDR G1 B — tier 5 heavy tank from France
- O-I Exp. vs Churchill I — tier 5 heavy tank from UK
- O-I Exp. vs Churchill III — tier 5 heavy tank from USSR
- O-I Exp. vs Excelsior — tier 5 heavy tank from UK
- See full tier 5 heavy tank tier list — all 17 vehicles ranked
About this vehicle
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.
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What tier is the O-I Experimental in WoT?
The O-I Experimental is a tier 5 heavy tank from Japan.
Is the O-I Exp. a premium tank?
No — the O-I Experimental is a researchable tech-tree vehicle, not a premium tank.
What's the top speed of the O-I Exp.?
25 km/h forward, 12 km/h reverse.
How much armor does the O-I Exp. have?
Hull armor: 125mm front, 70mm side, 70mm rear.