O-I tech tree branch
O-I characteristics
Firepower
- Damage
- 890hp
- Penetration
- 75mm
- DPM
- 2,054
- Reload
- 26.00s
- Rate of fire
- 2.31/min
- Aim time
- 3.70s
- Accuracy
- 0.580m
- Dispersion moving
- 0.200
- Shell velocity
- 540m/s
- Caliber
- 149mm
- Gun depression
- 20°
- Gun elevation
- 10°
Mobility
- Top speed
- 25km/h
- Reverse speed
- 10km/h
- Engine power
- 1,300hp
- Power/weight
- 8.7hp/t
- Hull traverse
- 18.0°/s
- Turret traverse
- 18.0°/s
- Hard terrain
- 1.10
- Medium terrain
- 1.30
- Soft terrain
- 1.80
Survivability
- Hit points
- 880hp
- Hull armor (front)
- 150mm
- Turret armor (front)
- 150mm
- Fire chance
- 0%
- Ammo rack HP
- 220hp
- Track HP
- 210hp
Spotting & other
- View range
- 370m
- Signal range
- 425m
- Camo (still)
- 0.0%
- Camo (moving)
- 0.0%
- Weight
- 150.0t
O-I historical reference
Development of the superheavy tank was started after the Battles of Khalkhyn Gol in 1939. The vehicle was designed as a maneuverable fire unit that was unprecedented in scale—its hull alone weighed 100 tons. Only one prototype was built, without a turret and made of construction steel. Trials were discontinued due to the unreliable engine; at the end of 1944, the prototype was scrapped. The 15 cm howitzer was to be mounted on the tank after its assembly.