Type 89B Chi-Ro

The IJA decided that the Type 87 was too heavy at 18 tons and too slow to be used as its main tank, and the Type 89 Chi-Ro (also called the Type 89 "I-Go") was developed to overcome these shortcomings.

Type 89B Chi-Ro
Class Vehicle
Type Armoured Fighting Vehicle
Manufacturer Mitsubishi J
Origin Japan
Country Name Origin Year
Japan 1936
Country Name Operational Year Retirement Year
Japan View
ManufacturerName Production From Production To Quantity
Mitsubishi J 1936 View
Osaka RZ 1936 View
Nanman RZ 1936 View
Kobe S 1936 View
Nihon S 1936 View
GENERAL DATA
Other DesignationsType 89B Chi-Ro [incorrectly identified as Type 94]
Manufacturer(s)Mitsubishi J, Osaka RZ, Nanman RZ, Kobe S, Nihon S
Production Quantityn.a.Production Period1936-?
TypeMedium TankCrew4
Length /hull (m)5.75Barrel Overhang (m)n.a.
Width /with skirts (m)2.18Height (m)2.56
Combat Weight (kg)13600Radio Equipmentn.a.
FIREPOWER
Primary Armament57mm Gun Type 90Ammunition Carried100
Traverse (degrees)(360°)Elevation (degrees)-8° to +25°
Traverse speed (360°)n.a.Sightn.a.
Secondary Armament2 x 6.5mm Type 91 MG (hull, turret rear)Ammunition Carried2750

MOBILITY CHARACTERISTICS
Engine Make & ModelMitsubishiNo. of Links/Trackn.a.
Type & Displacementair, In6Track Width30.5cm
Horsepower120hp@1800rpmTrack Ground Contact365.8cm
Power/Weight Ratio8.8 hp/tGround Pressure8.7 psi
Gearboxn.a.Ground Clearance (m)0.48
FuelDieselTurning Radius (m)n.a.
Range on/off road (km)170Gradient (degrees)34°
Mileage (liters/100km)n.a.Vertical Obstacle (m)0.83
Fuel Capacity (liters)n.a.Fording (m)1.00
Speed on/off road25 km/hTrench Crossing (m)2.51
ARMOR PROTECTION
Armor (mm@degrees)FrontSideRearTop/Bottom
Hull6mm to 17mm
Superstructure
Turret
Mantlet

End notes