The Ho-Nis used a Type 97 Chi-Ha tank chassis.2 The first chassis was converted in June 1941.2
The 150 mm howitzer dated back to 1905 and were withdrawn from service in 1942.4
Was organized in 4 vehicle batteries.
| Ho-Ni I | Ho-Ni II | Ho-Ni III | |
|---|---|---|---|
| Crew | 33 | 5 | 5 |
| Physical Characteristics | |||
| Weight | 32,704 lb 14.6 tons, 15 tons3 |
36,064 lb 16.1 tons |
36,064 lb 16.1 tons |
| Length | 18.2'3 | ||
| Height | 7.7'3 | ||
| Width | 7.7'3 | ||
| Width over tracks | |||
| Ground clearance | 14"3 | ||
| Ground contact length | 138"3 | ||
| Ground pressure | 8.4 psi3 | ||
| Armament | |||
| Main | 75 mm Type 902,3 | 100 mm Type 91 howitzer2 | 75 mm Type 88 antiaircraft 75 mm Type 90 field gun2 |
| Secondary | |||
| MG | |||
| Side arms | |||
| Quantity | |||
| Main | |||
| Secondary | |||
| MG | |||
| Side arms | |||
| Armor Thickness (mm) | Front: 0.98"3 Side: 0.8"3 |
||
| Hull Front, Upper | |||
| Hull Front, Lower | |||
| Hull Sides, Upper | |||
| Hull Sides, Lower | |||
| Hull Rear | |||
| Hull Top | |||
| Hull Bottom | |||
| Superstructure Front | 2"3 | ||
| Superstructure Sides | |||
| Superstructure Rear | |||
| Superstructure Top | |||
| Engine (Make / Model) | Mitsubishi | Mitsubishi | Mitsubishi |
| Bore / stroke | |||
| Cooling | Air3 | ||
| Cylinders | V-123 | 12 | 12 |
| Capacity | |||
| Net HP | 1703 | ||
| Power to weight ratio | |||
| Compression ratio | 17.8:13 | ||
| Transmission (Type) | Sliding pinion with high-low transfer case3 4 forward, 1 reverse3 |
||
| Steering | Clutch brake3 | ||
| Steering ratio | |||
| Starter | Electric3 | ||
| Electrical System | Starting: 24-volt3 Running: 12-volt3 |
||
| Ignition | |||
| Fuel (Type) | Diesel3 | Diesel | Diesel |
| Octane | |||
| Quantity | 52 gallons in 2 tanks3 | ||
| Road consumption | 3.7 gallons/hour @ 9.3 mph3 | ||
| Cross country consumption | |||
| Performance | |||
| Traverse | 20°3 | 20° | 20° |
| Speed - Road | 25 mph3 | 25 mph | 25 mph |
| Speed - Cross Country | |||
| Range - Road | 130 miles3, 131 miles | 131 miles | 131 miles |
| Range - Cross Country | |||
| Turning radius | |||
| Elevation limits | -5° to +25°3 | -5° to +20° | -5° to +20° |
| Fording depth | 39"3 | ||
| Trench crossing | 8.25'3 | ||
| Vertical obstacle | |||
| Climbing ability | 30° (57%) slope3 | ||
| Suspension (Type) | Front and rear wheels independently sprung, center wheels sprung in pairs, coil springs3 | ||
| Wheels each side | 63 | ||
| Return rollers each side | 33 | ||
| Tracks (Type) | Dry pin3 | ||
| Length | |||
| Width | 13"3 | ||
| Diameter | |||
| Number of links | 953 | ||
| Pitch | 4.9"3 | ||
| Tire tread | |||
| Track centers/tread | 6.6'3 |
| Type 38 HO-RO /Type 4 HO-RO1 |
|
|---|---|
| Crew | 4 or 51,4, 53 |
| Physical Characteristics | |
| Weight | 26,260 lb4, 29,982 lb1 13,300 kg4, 13,600 kg1 15 tons3 |
| Length | 18.2'3, 18' 2"1,4 5.537 m1,4 |
| Height | 7.6'3 |
| Height - Top of Shield | 5' 1"1,4 1.549 m1,4 |
| Width | 7' 6"1,4, 7.6'3 2.286 m1,4 |
| Width over tracks | |
| Ground clearance | 14"3 |
| Ground contact length | 144"3 |
| Ground pressure | 8 psi3 |
| Armament | |
| Main | 150 mm Type 38 howitzer1,4 150 mm Type 38 howitzer, L/123 |
| Secondary | |
| MG | |
| Side arms | |
| Quantity | |
| Main | |
| Secondary | |
| MG | |
| Side arms | |
| Armor Thickness (mm) | 254 Front: 0.63"3 Side: 0.5"3 |
| Hull Front, Upper | 25 |
| Hull Front, Lower | |
| Hull Sides, Upper | |
| Hull Sides, Lower | |
| Hull Rear | |
| Hull Top | |
| Hull Bottom | |
| Superstructure Front | 1"3 |
| Superstructure Sides | 0.63"3 |
| Superstructure Rear | |
| Superstructure Top | |
| Engine (Make / Model) | |
| Bore / stroke | |
| Cooling | Air3 |
| Cylinders | V-121,3,4 |
| Capacity | |
| Net HP | 1701,3,4 |
| Power to weight ratio | |
| Compression ratio | 17.8:13 |
| Transmission (Type) | Sliding pinion with high-low transfer case3 4 forward, 1 reverse3 |
| Steering | Clutch brake3 |
| Steering ratio | |
| Starter | Electric3 |
| Electrical System | Starting: 24-volt3 Running: 12-volt3 |
| Ignition | |
| Fuel (Type) | Diesel1,3,4 |
| Octane | |
| Quantity | 52 gallons in 2 tanks3 |
| Road consumption | 3.7 gallons/hour @ 9.3 mph3 |
| Cross country consumption | |
| Performance | |
| Traverse | 30°3 |
| Speed - Road | 23.6 mph1,4, 25 mph3 38 kph1,4 |
| Speed - Cross Country | |
| Range - Road | 100 miles3, 156 miles4 250 km4 |
| Range - Cross Country | |
| Turning radius | |
| Elevation limits | |
| Fording depth | 3' 3"3,4 1 m4 |
| Trench crossing | 6' 7"4, 8.25'3 2 m4 |
| Vertical obstacle | 2' 8"4 0.812 m4 |
| Climbing ability | 30° (57%) slope3 |
| Suspension (Type) | Front and rear wheels independently sprung, center wheels sprung in pairs, coil springs3 |
| Wheels each side | 63 |
| Return rollers each side | 33 |
| Tracks (Type) | Dry pin3 |
| Length | |
| Width | 13"3 |
| Diameter | |
| Number of links | 953 |
| Pitch | 4.9"3 |
| Tire tread | |
| Track centers/tread | 6.6'3 |
Sources: