O-I ExperimentalJapan

tier V heavy made in Japan. Wargaming Tankpedia technical details »

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.

Youtube videos

Equipment variants

Build #1

  1. Turbocharger OR Improved Hardening
  2. Gun Rammer
  3. Coated Optics

Build #2

  1. Improved Ventilation
  2. Gun Rammer
  3. Coated Optics

Build #3

  1. Turbocharger OR Improved Hardening
  2. Gun Rammer
  3. Improved Rotation Mechanism

Crew skills suggestions

Number of skills your crew has:

  • CommanderCommander

    Commander

    • Brothers in Arms

      Improves major qualifications and all skills for the entire crew. This perk is cumulative with the effects of Improved Ventilation, Bounty Ventilation, Venting System, Extra Combat Rations, Chocolate, Case of Cola, Strong Coffee, Improved Combat Rations, Pudding and Tea, Onigiri, Buchty, Coffee with Cinnamon Buns, Bread with Smalec, Spaghetti with Meat Sauce, and Vent Purge.

      Sixth Sense

      Enables the Commander to identify whether the vehicle has been spotted by the enemy.

      Repairs

      Accelerates repairs to damaged modules. The effective skill level is averaged across the entire crew. This skill is cumulative with the effects of Modified Configuration, Improved Hardening, Large Repair Kit, and Pre-Battle Maintenance.

      Recon

      Increases Maximum View Range. The skill is more effective if observation devices are damaged, or when combined with Situational Awareness, Coated Optics, Experimental Optics, Bounty Optics, Binocular Telescope, and Optical Calibration.

      Firefighting

      Enhances firefighting abilities. Effective skill level is averaged across the entire crew. The skill is cumulative with the effects of Experienced Firefighters.

  • GunnerGunner

    Gunner

    • Brothers in Arms

      Improves major qualifications and all skills for the entire crew. This perk is cumulative with the effects of Improved Ventilation, Bounty Ventilation, Venting System, Extra Combat Rations, Chocolate, Case of Cola, Strong Coffee, Improved Combat Rations, Pudding and Tea, Onigiri, Buchty, Coffee with Cinnamon Buns, Bread with Smalec, Spaghetti with Meat Sauce, and Vent Purge.

      Repairs

      Accelerates repairs to damaged modules. The effective skill level is averaged across the entire crew. This skill is cumulative with the effects of Modified Configuration, Improved Hardening, Large Repair Kit, and Pre-Battle Maintenance.

      Snap Shot

      Improves accuracy during turret rotation. If two Gunners have this skill, only the higher rating takes effect. This skill is cumulative with the effects of Vertical Stabilizer equipment, Improved Rotation Mechanism, Stabilizing Equipment System, and Stabilizer Greasing.

      Deadeye

      Increases the chance to cause damage to enemy vehicle modules and crew. It is effective only with AP, APCR, and HEAT shells. If two Gunners have the perk, the effect is not cumulative.

      Firefighting

      Enhances firefighting abilities. Effective skill level is averaged across the entire crew. The skill is cumulative with the effects of Experienced Firefighters.

  • DriverDriver

    Driver

    • Brothers in Arms

      Improves major qualifications and all skills for the entire crew. This perk is cumulative with the effects of Improved Ventilation, Bounty Ventilation, Venting System, Extra Combat Rations, Chocolate, Case of Cola, Strong Coffee, Improved Combat Rations, Pudding and Tea, Onigiri, Buchty, Coffee with Cinnamon Buns, Bread with Smalec, Spaghetti with Meat Sauce, and Vent Purge.

      Repairs

      Accelerates repairs to damaged modules. The effective skill level is averaged across the entire crew. This skill is cumulative with the effects of Modified Configuration, Improved Hardening, Large Repair Kit, and Pre-Battle Maintenance.

      Smooth Ride

      Improves accuracy when firing on the move. This skill does not take effect if the vehicle is stationary or rotating. This skill is cumulative with the effects of Vertical Stabilizer equipment, Improved Rotation Mechanism, Stabilizer Greasing, and Gearbox Intricacy.

      Off-Road Driving

      Reduces ground resistance when driving on soft and moderately soft terrain. Lower ground resistance increases vehicle maneuverability and acceleration. The skill is cumulative with the effects of Additional Grousers.

      Clutch Braking

      Increases vehicle traverse speed. This skill is cumulative with the effects of Additional Grousers, Improved Rotation Mechanism, Lend-Lease Oil, Quality Oil, Removed Speed Governor, 100-octane Gasoline, and 105-octane Gasoline.

  • RadiomanRadioman

    Radioman

    • Brothers in Arms

      Improves major qualifications and all skills for the entire crew. This perk is cumulative with the effects of Improved Ventilation, Bounty Ventilation, Venting System, Extra Combat Rations, Chocolate, Case of Cola, Strong Coffee, Improved Combat Rations, Pudding and Tea, Onigiri, Buchty, Coffee with Cinnamon Buns, Bread with Smalec, Spaghetti with Meat Sauce, and Vent Purge.

      Repairs

      Accelerates repairs to damaged modules. The effective skill level is averaged across the entire crew. This skill is cumulative with the effects of Modified Configuration, Improved Hardening, Large Repair Kit, and Pre-Battle Maintenance.

      Situational Awareness

      Extends View Range. If two Radio Operators have the skill, only the higher rating is effective. The skill is cumulative with the effects of Recon, Coated Optics, Experimental Optics, Bounty Optics, Binocular Telescope, and Optical Calibration.

      Firefighting

      Enhances firefighting abilities. Effective skill level is averaged across the entire crew. The skill is cumulative with the effects of Experienced Firefighters.

      Concealment

      Increases vehicle concealment. This skill is cumulative with the effects of camouflage (for the corresponding map type), Camouflage Net, Low Noise Exhaust System, and Natural Cover.

  • RadiomanRadioman

    Radioman

    • Brothers in Arms

      Improves major qualifications and all skills for the entire crew. This perk is cumulative with the effects of Improved Ventilation, Bounty Ventilation, Venting System, Extra Combat Rations, Chocolate, Case of Cola, Strong Coffee, Improved Combat Rations, Pudding and Tea, Onigiri, Buchty, Coffee with Cinnamon Buns, Bread with Smalec, Spaghetti with Meat Sauce, and Vent Purge.

      Repairs

      Accelerates repairs to damaged modules. The effective skill level is averaged across the entire crew. This skill is cumulative with the effects of Modified Configuration, Improved Hardening, Large Repair Kit, and Pre-Battle Maintenance.

      Call for Vengeance

      Enables a Radio Operator who survived the destruction of his vehicle to report enemy positions for another two seconds. If two Radio Operators have the perk, the effect is not cumulative.

      Firefighting

      Enhances firefighting abilities. Effective skill level is averaged across the entire crew. The skill is cumulative with the effects of Experienced Firefighters.

      Concealment

      Increases vehicle concealment. This skill is cumulative with the effects of camouflage (for the corresponding map type), Camouflage Net, Low Noise Exhaust System, and Natural Cover.

  • LoaderLoader

    Loader

    • Brothers in Arms

      Improves major qualifications and all skills for the entire crew. This perk is cumulative with the effects of Improved Ventilation, Bounty Ventilation, Venting System, Extra Combat Rations, Chocolate, Case of Cola, Strong Coffee, Improved Combat Rations, Pudding and Tea, Onigiri, Buchty, Coffee with Cinnamon Buns, Bread with Smalec, Spaghetti with Meat Sauce, and Vent Purge.

      Repairs

      Accelerates repairs to damaged modules. The effective skill level is averaged across the entire crew. This skill is cumulative with the effects of Modified Configuration, Improved Hardening, Large Repair Kit, and Pre-Battle Maintenance.

      Intuition

      Allows for quicker switching between shell types in a loaded gun. To activate this skill, a gun, a double-barreled gun, or a magazine must be fully loaded. If two loaders have the same skill, the average skill level is taken into account. The minimum time to change a shell type is 1 s for cyclic (standard) guns and 2.5 s for double-barreled guns and magazines.

      Safe Stowage

      Increases ammo rack durability: the shells do not come into contact with each other. If two Loaders have this perk, the effect is not cumulative. This perk is cumulative with the effects of Modified Configuration.

      Firefighting

      Enhances firefighting abilities. Effective skill level is averaged across the entire crew. The skill is cumulative with the effects of Experienced Firefighters.

It's up to you to choose what to start with instead of Repairs.
To take full advantage of Intuition, use it on two crew members where possible (loaders or others).
If your tank gets often ammo racked, take Safe Stowage first (especially British tanks).

*Order of skills and perks is important.


skill4ltu Index

This may take a few seconds, depending on your connection speed. Thank you!

To see MoE Data, please rotate your phone to landscape mode and refresh the page!


Marks of Mastery expectation values

 
EU
RU
NA
ASIA
351
351
461
475
605
603
832
810
886
913
1,167
1,142
1,147
1,185
1,460
1,402

*Numbers are total experience points earned in a battle..


WN8 expected values

frags:1.265
damage:701.162
spotted:1.151
defence pts.:0.861
win rate:54.856%