Type 99 Japanese 155mm Self-Propelled Howitzer (SPH)

Type 99

Self-Propelled Howitzer (SPH)

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Basic Information

Name

Type 99 Japanese 155mm Self-Propelled Howitzer (SPH)

Designation

Type 99

Alternate Designation

Type 99; Long Nose

Equipment Type

Self-Propelled Howitzer (SPH)

Manufacturer

Mitsubishi Heavy Industries/Japan Steel Works

Date of Introduction

2002

Description

The Type 99 howitzer replaced the Type 75 howitzer. The Japanese Defense Agency Technical Research Division designed the howitzer. Like the Type 75, Mitsubishi Heavy Industries, Japan (hull and final assembly) and Japan Steel Works (howitzer and turret) built the howitzer. The Type 99 is also known as "Long Nose" It is fitted with a travel lock that is located on the front of the vehicle. The travel lock folds onto the front glacis plate when not in use. The howitzer is also equipped with an auto loader that enables the howitzer to fire a maximum rate of 18 rounds in 3 minutes.. Secondary armament consists of a roof-mounted 12.7 mm heavy machine gun. Armor of the Type 99 provides protection against small arms fire and artillery shell splinters. Vehicle is fitted with NBC protection system. It is possible the vehicle is equipped with a muzzle velocity radar (located on the rear of the turret) to feed data into the fire control system.

Ground Specifications

Crew 4

Engine Water cooled, 6-cyl diesel (600 hp)

Active Protection None

NBC Protection Yes

System

Alternative Designation Type 99; Long Nose

Type Self-Propelled Howitzer

Manufacturer Mitsubishi Heavy Industries/Japan Steel Works

Chassis Type 99

Crew 4 ea

Displacement Time INA

Emplacement Time INA

Note The Type 99 self-propelled howitzer is resupplied from the Type 99 ammunition resupply vehicle. A battery of the Type 99 howitzers also includes a mobile command post and fire control radar.

Dimensions

Length,Hull INA

Length, Gun Forward 12.2 m

Width 3.2 m

Height, Overall 4.3 m

Weight 40, 000 kg

Ground Pressure INA

Track, Length on Ground INA

Track width INA

Ground Clearance INA

Automotive

Engine Name 1 x Mitsubishi 6SY31WA

Engine Type Water cooled, 6-cyl diesel

Engine Power 600 hp hp

Fuel Capacity INA

Range INA

Speed, Maximum Road 49 km/h

Speed, Average Cross INA

Speed Maximum Swim Not Amphibious

Side Slope 60 %

Gradient 30 %

Vertical Step 0.9 m

Trench 2 m

Fording Depth 1.2 m

Suspension 7 dual rubber-tired road wheels on both sides with a drive sprocket on the front and an idler wheel at the rear. The howitzer is also equipped with return rollers.

Main Gun

System

Name L52 version of the FH-70 towed howitzer

Type Rifled Howitzer

Caliber 155mm/39 cal

Barrel Length 39 cal

Weight 9.6 tons

Breech Type semi-automatic vertical sliding wedge

Recoil System hydropneumatic

Elevation INA

Traverse 360 deg

Maximum Firing Range 30,000 m (rocket assisted)

Maximum Rate of Fire 18 in 3 minutes

Sustained Rate of Fire INA

Ammunition

Name INA

Type Frag-HE

Caliber 155 mm

Length INA

Weight INA

Maximum Range 19,000 m

On Board Load INA

NOTE The Type 99 is capable of firing the US M107 projectile.

Auxiliary Weapon System

System

Name 1 x M2 Browning

Type Heavy Machine Gun

Caliber 12.7 mm

Length 1,654 mm

Barrel Length 1,143 mm

Weight 58 kg with tripod and T&E (Traverse and Elevation Mechanism)

Action Short recoil-operated

Rate of Fire 450–600 rounds/min

Muzzle Velocity 890 m/s

Maximum Firing Range 7,400 m

Effective Firing Range 1,800 m

Feed System Belt-fed (M2 or M9 links)

Sights INA

Ammunition

Type Rifle

Caliber 12.7 mm

Cartridge 12.7×99mm NATO

Basic Load 1,000 rds

Fire Control

Computerized FCS No

Thermal Sight Vehicle Commander INA

Thermal Sight Gunner INA

Main Gun Stabilization No

Night Vision Devices Yes

Protection

Hull Armor Armor of the Type 99 provides protection against small arms fire and artillery shell splinters

Turret Armor Protection against small arms fire and artillery shell splinters

Applique Armor No

Explosive Reactive Armor No

Active Protection System No

Mine Clearing No

Self-Entrenching Blade No

NBC Protection Yes

Smoke Equipment No

Fire Suppression INA

Image Sources

Notes https://commons.wikimedia.org/wiki/File:JGSDF_type99_SPH_higashi_fuji_Firing_Space.JPG; https://commons.wikimedia.org/wiki/File:JGSDF_Type_99.jpg; https://commons.wikimedia.org/wiki/File:JGSDF_Type_99.jpg;

Details

Country of Origin Japan

Category Self-Propelled Gun/Howitzer Artillery Systems

Land > Artillery > Self-Propelled Gun/Howitzer Artillery Systems

Classification

Domain

Ground

Equipment Status

Active

Dimensions

Length

—

Width

3.2 m

Height

4.3 m

Weight

40 kg

Operators (1)

Japan

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