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Rank VI USA | Premium | Golden Eagles
A-10A Thunderbolt (Early)
GarageImage Ho-Ro.jpg
ArtImage Ho-Ro.png
1.3 1.3 1.3
Research:2 900 Specs-Card-Exp.png
Purchase:700 Specs-Card-Lion.png
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The Type 4 Ho-Ro (四式十五糎自走砲「ホロ」) is an open-topped self-propelled gun with a short-barreled 150 mm howitzer, based on the Chi-Ha. Being pressed instantly into service on its creation, a dozen or so were shipped to the Philippines together with the newly formed 1st Self-Propelled Artillery Company. While it did see combat with several confirmed Sherman destructions, it was effectively used in close-quarter combat rather than as an artillery piece, firing at Shermans at 100-200 m range in smokey and low visibility scenarios, and repositioning on each shot. Arriving in Dec 1944, the last Ho-Ro squad served until knocked out in Mar 1945 with the remainder of the company fighting until the end in the mountains as regular infantry.

Since its introduction in Update 1.65 "Way of the Samurai", the Ho-Ro has gained a reputation for being one of the most powerful howitzer-equipped SPGs in the game despite its low battle-rating, right up there with the beloved KV-2. It is capable of destroying or severely disabling any opponent it meets (or more often ambushes), even against top-tier vehicles, mainly due to its extremely effective high-explosive shell. This is balanced, however, by the shell's low velocity, forcing the player to lob the shell in an arc at their opponent even for a short distance, and the vehicle's light armour and limited gun traverse compared to other SPGs.

General info

Survivability and armour

Armourfront / side / back
Hull25 / 25 / 20
Turret25 / 20 / 0
Crew4 people
Visibility75 %

Armour type:

  • Rolled homogeneous armour
Armour Front Sides Rear Roof
Hull 12 mm (80°) Front glacis
15 mm (63°) Joint plate
25 mm (37-64°) Lower glacis
25 mm (28-36°) Top Left
25 mm (25-26°) Top Right
20 mm Bottom
17 mm (70°)
20 mm (4-69°)
8.5-12 mm
Turret 25 mm (15°) 20 mm (0-11°) N/A 12 mm


  • Suspension wheels and tracks are both 15 mm thick.


Speedforward / back
AB44 / 7 km/h
RB and SB40 / 6 km/h
Number of gears4 forward
1 back
Weight14.8 t
Engine power
AB324 hp
RB and SB170 hp
Power-to-weight ratio
AB21.9 hp/t
RB and SB11.5 hp/t
Game Mode Max Speed (km/h) Weight (tons) Engine power (horsepower) Power-to-weight ratio (hp/ton)
Forward Reverse Stock Upgraded Stock Upgraded
Arcade 44 7 14.8 241 324 16.28 21.89
Realistic 40 6 150 170 10.14 11.49

Modifications and economy

Repair costBasic → Reference
AB93 → 115 Sl icon.png
RB107 → 132 Sl icon.png
SB126 → 155 Sl icon.png
Total cost of modifications2 970 Rp icon.png
895 Sl icon.png
Talisman cost190 Ge icon.png
Crew training200 Sl icon.png
Experts1 000 Sl icon.png
Aces20 Ge icon.png
Research Aces96 000 Rp icon.png
Reward for battleAB / RB / SB
10 / 20 / 20 % Sl icon.png
100 / 100 / 100 % Rp icon.png
Mobility Protection Firepower
Mods new tank traks.png
200 Rp icon.png
60 Sl icon.png
45 Ge icon.png
Mods new tank suspension.png
165 Rp icon.png
50 Sl icon.png
40 Ge icon.png
Mods new tank break.png
Brake System
165 Rp icon.png
50 Sl icon.png
40 Ge icon.png
Mods new tank filter.png
250 Rp icon.png
75 Sl icon.png
60 Ge icon.png
Mods new tank transmission.png
480 Rp icon.png
145 Sl icon.png
110 Ge icon.png
Mods new tank engine.png
480 Rp icon.png
145 Sl icon.png
110 Ge icon.png
Mods tank tool kit.png
Improved Parts
200 Rp icon.png
60 Sl icon.png
45 Ge icon.png
Mods extinguisher.png
Improved FPE
165 Rp icon.png
50 Sl icon.png
40 Ge icon.png
Mods tank reinforcement jp.png
Crew Replenishment
250 Rp icon.png
75 Sl icon.png
60 Ge icon.png
Mods new tank horizontal aiming.png
Horizontal Drive
200 Rp icon.png
60 Sl icon.png
45 Ge icon.png
Mods tank cannon.png
Adjustment of Fire
165 Rp icon.png
50 Sl icon.png
40 Ge icon.png
Mods new tank vertical aiming.png
Elevation Mechanism
250 Rp icon.png
75 Sl icon.png
60 Ge icon.png


Main armament

150 mm Type 38 howitzer
Ammunition24 rounds
Reloadbasic crew → aces
17.3 → 13.3 s
Vertical guidance-5° / 30°
Horizontal guidance-5° / 5°
Main article: Type 38 (150 mm)
150 mm Type 38 Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 24 -10°/+20° ±5° N/A 5.3 7.3 8.9 9.8 10.4 17.29 15.30 14.10 13.30
Realistic 3.6 4.2 5.1 5.6 6.0


Penetration statistics
Ammunition Type of
Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
Type 95 APHE APHE 38 37 35 33 31 31
Type 92 HE HE 55 55 55 55 55 55
Shell details
Ammunition Type of
mass (kg)
Fuse delay
Fuse sensitivity
Explosive mass
(TNT equivalent) (kg)
0% 50% 100%
Type 95 APHE APHE 290 36.1 1.2 19 2.6 47° 60° 65°
Type 92 HE HE 290 36 0 0.1 7.02 79° 80° 81°

Ammo racks

Ammo racks of the Ho-Ro
rack empty
rack empty
rack empty
24 Projectiles
17 (+7)


  • The Ho-Ro uses two-piece ammunition, composed of propellant bags (orange) and projectiles (yellow). Both have separate racks.
  • Both projectiles and propellant bags are modeled individually and disappear after having been shot or loaded.

Machine guns

Ammunition3 000 rounds
Belt capacity20 rounds
Reloadbasic crew → aces
3.9 → 3.0 s
Fire rate499 shots/min
Main article: Type 97 (7.7 mm)
7.7 mm Type 97
Mount Capacity (Belt) Fire rate Vertical Horizontal
Pintle 3,000 (20) 499 -10°/+60° ±60°

Usage in battles

The Ho-Ro is a fairly manoeuvrable SPG, and like many other open-topped vehicles, this is not one that should charge into the front-lines. Just like many of the other low-rank Japanese vehicles, it has no real armour protection from anything more than rifle-calibre MGs, and its ammo storage is literally a box mounted on top of the engine deck. The crew is very exposed, and the gun breech is mounted rather high on the chassis and can be easily knocked out. With this knowledge in mind, the Ho-Ro is best played by staying in the rear (but not distantly) of friendly tanks for short-range or point-blank artillery fire, along with finding hidden positions where it can attempt to be hull-down out of sight of the enemy.

Due to its low-velocity shell, the gun often needs to be aimed higher than the commander estimates when performing direct fire onto a target, but this also allows the vehicle to lob shells from behind shallow hills, out of the sight from opponents that may be camping or pushing into friendly territory on the other side. However, because its HE shell is so powerful, it is extremely risky to fire directly next to or very close to an enemy vehicle, as the light armour may not protect the crew, and the blast from the explosion it will certainly deal damage to the vehicle itself. The gun, while powerful, cannot traverse very far to either side, so to fire on tanks that are outside the arc of the gun's horizontal traverse, the entire hull must be traversed as well. The recoil of the gun is also an issue, as it throws the vehicle backwards rather severely, which means it loses target acquisition every time it fires.

One interesting note is the pintle-mounted MG on the roof, which has good elevation and a much wider range of horizontal fire than the main gun, which can be useful on spotting enemy tanks for teammates or dealing with SPAAs that have exposed crew members. However, it has a slower rate of fire than most other rifle-calibre MGs and its magazine capacity is pitiful. In conclusion, the Ho-Ro is a very defensive vehicle suited to supporting friendly tanks and ambushing the enemy on paths where they may attempt to flank around the map.

Pros and cons


  • 150 mm howitzer makes it an intimidating foe
  • The howitzer's high trajectory makes it able to fire over hills
  • Large TNT filler in its HE shell
  • HE load can cause sufficient splash and shrapnel damage even if the shell doesn't directly hit the target
  • Can destroy most, if not all, vehicles by shooting HE just under an enemy tank and hitting the thin belly armour
  • Can deter inattentive flak trucks or any vehicles with open and exposed crew with its roof-mounted MG
  • Quick, manoeuvrable in both AB and RB, though slightly sluggish to put into gear in the latter
  • Good gun depression
  • HE Shell will destroy any vehicle you come up against


  • Super thin armour, extremely vulnerable to heavy machine guns, SPAAs, and aircraft
  • Extreme blast radius can destroy the vehicle if fired too close to oneself
  • Ammo Rack is literally a box behind the crew on top of the engine deck, leading to some very explosive ends if hit there
  • Massive recoil causes the vehicle to be launched backwards after firing, requiring aiming adjustment after every shot
  • Horizontal traverse is disappointing
  • Very slow muzzle velocity and limited range
  • At long range, the shells have a habit of bouncing harmlessly off armour surfaces without exploding
  • AP Shell lacking in penetration for the calibre relies more on HE power


The Type 4 Ho-Ro was a Self Propelled Gun developed by the Imperial Japanese Army, based off the German Grille series. It was developed off the Type 97 Chi-Ha chassis and used a 150 mm Krupp gun, considered outdated by 1942. It was used to combat American forces. Only a few were made, and out of those few, 8 were sunk with a Japanese ship somewhere in the Pacific. Usually deployed in groups of 4, it was used in the Philippines during late 1944 and then used in ones and twos on Okinawa, to a somewhat great effect. It was ineffective due to its 3 degrees of gun swing and 30 degrees of depression because of the gun mount's design. That gave it a small firing distance of 6,000 m. It also could only fire 5 shells per minute because of the breech-loader.



See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

  • reference to the series of the vehicles;
  • links to approximate analogues of other nations and research trees.

External links


Mitsubishi Heavy Industries (三菱重工業株式会社)
Light Tanks 
Type 95  Ha-Go · Ha-Go Commander
Medium Tanks 
Type 89  I-Go Ko
Type 97  Chi-Ha · Chi-Ha Kai
Type 1  Chi-He · Chi-He (5th Regiment)
Type 3  Chi-Nu · Chi-Nu II
Type 4  Chi-To · Chi-To Late
Type 5  Chi-Ri II
Chi-Ha Derived  Ho-Ro
Chi-He Derived  Ho-I
Chi-Ri Derived  Ho-Ri Prototype · Ho-Ri Production
Other  Na-To · Ro-Go Exp.
Captured  ␗Chi-Ha · ␗Chi-Ha Kai
Note  Most tank designs would be contracted by the Army Technical Bureau to Mitsubishi
See also  Mitsubishi Heavy Industries Ltd. (Post-War)

Japan tank destroyers
Ro-Go Derivatives  Ro-Go Exp.
Chi-Ha Derivatives  Ho-Ni I · Ho-Ni III · Ho-Ro · Chi-Ha LG
Ho-Ri  Ho-Ri Prototype · Ho-Ri Production
Other  Na-To
SPRG  Type 60 (C)
SPH  Type 75 · Type 99
ATGM  Type 60 ATM
Rocket  Type 75 MLRS
USA  ▅M36