Ho-I

Ho-I

Chi-Ha

Ho-I

Chi-Ha

Japan

I Rank

Battle rating:

AB	RB	SB
2.3	2.0	2.0

Class:

Medium tank

Research:5 900

Purchase:6 300

Show in game

Description

The Type 2 Ho-I (二式砲戦車「ホイ」) was designed to uparm the Chi-Ha's 57 mm low velocity cannon to a 75 mm low velocity to beat bunkers the Chi-Ha couldn't. Development to squeeze a 75 mm into the turret of the Chi-Ha or Chi-Ha Kai took some time and only by 1941 was a Type 1 Experimental Ho-I ready, but for production the Chi-He hull was chosen to ease up production.

The Ho-I was introduced with the rest of the Japanese ground forces tree with Update 1.65 "Way of the Samurai". Essentially a Chi-He with a new turret and short barrel 75 mm meant to replace the older Chi-Has in their infantry support role offering a bigger bang. It can also load HEAT, mimicking the role of the Pz.IV E in a smaller and faster package but with a longer reload.

General info

Survivability and armour

Armourfront / side / back

Hull50 / 25 / 20

Turret50 / 25 / 25

Crew5 people

Visibility88 %

The armour on the Ho-I, while being an upgrade over the Chi-Ha (50 mm at the turret and hull front, compared to 25 mm), still leaves much to be desired. Most contemporary tank guns can penetrate the flatter surfaces and the side armour is not even completely proof to heavy machine guns. The internal modules aren't the most resilient, as the turret is rather cramped, stuffed with ammunition, the rather small cannon breech, and 3 crew members. A single APHE shell will almost invariably kill all the turret crew.

The armour consists of rolled mostly homogeneous armour, with cast homogeneous surrounding the gun barrel, protruding from the turret.

Armour type:

• Rolled homogeneous armour (hull, turret, cupola)
• Cast homogeneous armour (gun mantlet)

Armour	Front (Slope angle)	Sides	Rear	Roof
Hull	50 mm (16°) Front Plate 12 mm (76°) Front Glacis	25 mm (30°) Hull below tracks 20 mm Hull above tracks	20 mm	12 mm (4°) Roof
Turret	50 mm (16°) Turret Front 50 mm (16°) Gun Mantlet	25 mm (9-10°)	25 mm (5°)	12 mm (76°) Front 12 mm (89°) Middle 12 mm (74°) Rear
Cupola	50 mm Lower Part 25 mm Upper Part			12 mm

Mobility

Speedforward / back

AB49 / 10 km/h

RB and SB44 / 9 km/h

Number of gears8 forward

2 back

Weight16.1 t

Engine power

AB458 hp

RB and SB240 hp

Power-to-weight ratio

AB28.4 hp/t

RB and SB14.9 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	49	10	16.1	372	458	23.11	28.45
Realistic	44	9		212	240	13.17	14.91

The mobility of the Ho-I is improved over the Chi-Ha, the more powerful engine giving it a higher power-to-weight ratio. The relatively long tracks for a vehicle of this weight and width lead to fairly good cross-country mobility. While not a speedster, the Ho-I will not be completely left in the dust by light tanks and can still arrive at the battlefield reasonably quickly.

Modifications and economy

Repair costBasic → Reference

AB318 → 409

RB337 → 433

SB409 → 526

Total cost of modifications5 940

4 500

Talisman cost410

Crew training1 800

Experts6 300

Aces75

Research Aces135 000

Reward for battleAB / RB / SB

20 / 30 / 30 %

106 / 106 / 106 %

Modifications

Mobility	Protection	Firepower
Tracks Research: 300 Cost: 230 55 Suspension Research: 330 Cost: 250 65 Brake System Research: 330 Cost: 250 65 Filters Research: 500 Cost: 380 95 Transmission Research: 480 Cost: 360 90 Engine Research: 480 Cost: 360 90	Improved Parts Research: 300 Cost: 230 55 Improved FPE Research: 330 Cost: 250 65 Crew Replenishment Research: 500 Cost: 380 95	Horizontal Drive Research: 300 Cost: 230 55 75mm_type2_HEAT_ammo_pack Research: 300 Cost: 230 55 Adjustment of Fire Research: 330 Cost: 250 65 Elevation Mechanism Research: 500 Cost: 380 95 Artillery Support Research: 480 Cost: 360 90 75mm_jp_Smoke_ammo_pack Research: 480 Cost: 360 90

Armaments

Main armament

75 mm Type 99 cannon

Ammunition63 rounds

Reloadbasic crew → aces

7.6 → 5.9 s

Vertical guidance-15° / 20°

75 mm Type 99					Turret rotation speed (°/s)					Reloading rate (seconds)
Mode	Capacity	Vertical	Horizontal	Stabilizer	Stock	Upgraded	Full	Expert	Aced	Stock	Full	Expert	Aced
Arcade	63	-15°/+20°	±180°	N/A	13.33	18.45	22.40	24.77	26.35	7.67	6.79	6.25	5.90
Realistic					8.33	9.80	11.90	13.16	14.00

Ammunition

Penetration statistics
Ammunition	Type of warhead	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	43	41	37	31	27	23
Type 94 HE	HE	12	12	12	12	12	12
Type 2 HEAT	HEAT	90	90	90	90	90	90

Shell details
Ammunition	Type of warhead	Velocity (m/s)	Projectile mass (kg)	Fuse delay (m)	Fuse sensitivity (mm)	Explosive mass (TNT equivalent) (g)	Ricochet
							0%	50%	100%
Type 95 APHE	APHE	450	6.21	1.2	14	460	47°	60°	65°
Type 94 HE	HE	522	6.02	0	0.1	810	79°	80°	81°
Type 2 HEAT	HEAT	350	3.56	0.05	0.1	640	62°	69°	73°

Smoke shell characteristics
Ammunition	Velocity (m/s)	Projectile mass (kg)	Screen radius (m)	Screen deploy time (s)	Screen hold time (s)	Explosive mass (TNT equivalent) (g)
Type 90 Smoke	570	5.72	13	5	20	100

Ammo racks

Ammo racks of the Ho-I

Full ammo	1st rack empty	2nd rack empty	3rd rack empty	4th rack empty	Visual discrepancy
63	55 (+ 8)	43 (+ 20)	22 (+ 41)	1 (+ 62)	No

Notes:

• Racks disappear after you've fired all shells in the rack.
• Turret empty: 43 (+ 20) shells.

Machine guns

7.7 mm Type 97 machine gun (coaxial)

Ammunition3 000 rounds

Belt capacity20 rounds

Reloadbasic crew → aces

3.9 → 3.0 s

Fire rate499 shots/min

7.7 mm Type 97 machine gun

Ammunition1 000 rounds

Belt capacity20 rounds

Reloadbasic crew → aces

3.9 → 3.0 s

Fire rate499 shots/min

While it has the classic bow-mounted Type 97 machine gun featured by Japanese wartime tanks, the Ho-I also features another Type 97 on a pintle mount. The Type 97 is disappointing by rifle-calibre machine gun standards, having a very small magazine and a relatively low rate of fire. While this is not a big drawback when fighting other tanks, it makes mowing down open-topped SPAAs, fending off aircraft, and spotting enemies on the minimap more difficult. Having two of them compensates slightly for these flaws.

7.7 mm Type 97
Mount	Capacity (Belt)	Fire rate	Vertical	Horizontal
Pintle	1,000 (20)	498	-10°/+70°	±60°
Hull	3,000 (20)	498	±8°	±14°

Usage in battles

The Ho-I should generally be played as a support tank. While its mobility is good, its gun packs a punch, and its armour is halfway decent, the poor ballistics of its shells and the substandard gun handling are a considerable liability at its rank, where speedy light tanks are common. A missed shot at closer distances against a Stuart or BT tank could have unfortunate consequences, allowing them to flank or put a round into the Ho-I's weak spots. Conversely, it should go without saying that the Ho-I makes for a poor sniper, so staying in back of the map and providing covering fire is unlikely to be productive. For those not very familiar with the tank, it is best to stay just behind advancing teammates and allow them to attract attention; this provides extra time to line up shots and avoids sudden surprises. When missing shots is less of a concern (e.g. against slow targets or in close quarters), the great firepower can be brought to bear.

The Ho-I has a sizeable arsenal of shell types. The stock Type 95 APHE round is quite underwhelming, having a bit less penetration than the Ke-Ni reserve tank's gun. The larger calibre provides some overmatch effect, but in general it is not a reliable weapon against anything more heavily armoured than a reserve tank. The M3A1 Stuart's turret is immune to the round and the hull has a decent chance of shrugging off the shot at a slight distance! On the bright side, it contains an enormous 460 g of TNT filler, so any target that the shell manages to penetrate will be annihilated in short order. The Type 94 HE round has 12 mm of penetration and is of little value, though it may be useful for destroying lightly armoured vehicles with overpressure effect. The unlockable Type 2 HEAT round has 90 mm of penetration at any distance. This is enough to go through the frontal armour of nearly all tanks at its rank, though the post-penetration damage can be punctual and it has the worst ballistics of any shell type available to the Ho-I. Try to aim for critical crew members or ammo racks. Lastly, the Type 90 smoke shell is available. While smoke is always nice to have, especially at lower ranks where fewer tanks have smoke grenades or shells, it is especially useful for tanks with low-velocity guns like the Ho-I. In a support role, smoke shells can be used to hide teammates and the user from view when driving in the open or capturing objectives, but they can also be used offensively by blinding entrenched targets. This makes it easier for the Ho-I to advance safely and get into firing range. If the enemies decide to leave the smoke cloud, they will be noticeable to the Ho-I slightly before their own vision clears up, providing time for a careful shot.

Experience gained with the Ho-I can be applied to some extent to the later Chi-He, Chi-Nu, and Chi-Nu II, as they all use the same chassis. Out of these tanks, the Ho-I is the only model that has to deal with a low-velocity gun, but it currently has the lowest battle rating and the armour holds up the best as a result.

Pros and cons

Pros:

• 75 mm cannon can do respectable damage against other vehicles
• Improved armour and mobility in comparison to prior tanks
• Early access to HEAT rounds with good penetration
• Fast reverse speed (2 reverse gears)
• Awesome gun depression of -15°

Cons:

• Stock grind is terrible with about 40 mm of penetration on stock APHE which won't do much initially at the comparable battle rating
• Gun is hard to use, all ammunition types have low muzzle velocity
• Poor turret rotation speed
• Armour still inadequate to block tank shells or 20 mm autocannons firing HVAP from the front
• Slow traverse speed

History

The standard tanks of the Imperial Japanese Army for much of the 1930s were the Ha-Go, I-Go Ko, and Chi-Ha. The last two were equipped with larger 57 mm low-velocity guns intended for use against both tanks and infantry. When used in the Japanese invasion of Manchuria, it was found that these weapons were still insufficient against fortifications, and hence an even bigger gun was required. The Chi-Ha was selected as a suitable platform for mounting a larger weapon due to its size and speed. The gun chosen was the Type 41 Mountain gun, a license built version of the Krupp 1908 Mountain gun originally purchased from Germany. After being adapted, it was redesignated the Type 99 75 mm gun, and the integration with the Chi-Ha chassis was completed around 1942.

The initial prototype Ho-I used the Chi-Ha chassis, but it was decided to switch to the improved Chi-He chassis for serial production. Further Ho-I examples were converted from existing Chi-He tanks. Mass production was not achieved due to the heavy bombing of Japanese industry in the later stages of World War II and the lack of raw materials. The program was finally cancelled in 1944 and completed Ho-I examples were reserved for home-defense in preparation for a US invasion of the Japanese mainland. The war ended before this came to pass. Details on the fate of the tanks in the postwar era are scarce. They were most likely examined and scrapped. No examples are known to exist today.

Media

Skins

• Skins and camouflages for the Ho-I from live.warthunder.com.

See also

Related Development

• Chi-Ha
• Chi-He (Family) - (Base hull)

Tanks of comparable role, configuration, and era

• Axis tanks equipped with KwK37 (75 mm) L/24
  • Pz.III N
  • Pz.IV (Family) - (Early models)
  • Turan II
• T-26-4
• M8 Scott
• BT-42

External links

Paste links to sources and external resources, such as:

• topic on the official game forum;
• other literature.

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
SPGs
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)