Type 61

This page is about the Japanese medium tank Type 61. For other variants, see Type 61 (Family).

Type 61

ST-A2

ST-A3

Type 61

ST-A2

ST-A3

Japan

IV Rank

Battle rating:

AB	RB	SB
6.3	6.7	6.7

Class:

Medium tank

Research:63 000

Purchase:200 000

Description

The Type 61 was the first Japanese service MBT of the JGSDF, developed on the ST-A series of prototypes to replace the ageing M4A3 (76) and M24 which on top of their age were too large for the average-sized Japanese crew member. While most of the components of the Type 61 were of American origin, the design and role of the tank were purely Japanese. While the tank was a serviceable Japanese equivalent of the M26 Pershing and Patton (M46/47/48) series, it was only introduced in 1961 with production only catching up in 1970, it started to show its age compared to the newer generation of tanks like the M60, T-62, and Leopard 1. The Type 61 remained in service until 2000 when it was finally completely replaced by the Type 74 MBT and the roll-in phase of the Type 90 MBT.

The Type 61 was introduced along with the initial Japanese Ground Forces tree in Update 1.65 "Way of the Samurai". It looks like a bizarre cross between the American M41 Walker Bulldog and Patton series (M46/47/48). It is very similar in its overall length and size to the M41 and the turret looks like the M60's with the same prominent commander's cupola on top of the turret housing a rangefinder. The Japanese Type 61 mimics the American M47 Patton in firepower and M41 Walker Bulldog in armour, it has the large, tall profile and fairly mobile medium tank characteristics of the M47 Patton, with the same decent 90 mm M36 (Type 61) cannon, but the armour protection qualities are more akin to those of the M41 Walker Bulldog.

General info

Survivability and armour

Smoke grenades

Creation of a smoke screen in front of the vehicle

Armourfront / side / back

Hull50 / 35 / 12

Turret40 / 60 / 35

Crew4 people

Visibility88 %

Armour Type:

• Rolled homogeneous armour
• Cast homogeneous armour (Turret)

Armour	Front	Sides	Rear	Roof
Hull	45 mm (49-61°) Front glacis 50 mm (54°) Lower glaics	30 mm (30°) Top 35 mm Bottom	25 mm (13°) Top 20 mm (30°), 10 mm (59°) Bottom	12 mm
Turret	40 mm (4-78°) Turret front 80 mm (0-68°) Gun mantlet	40-60 mm (0-38°)	35 mm	18 mm
Cupola	31.7 mm	31.7 mm	31.7 mm	31.7 mm

Notes:

• Suspension wheels are 15 mm thick while tracks are 20 mm thick.

Due to its weak armour nearly every tank is a serious threat to the Type 61, as well as a number of SPAA vehicles, however fast medium tanks such as the T-44, M46/M47 Patton or Panther II which can match its mobility are a painful to avoid, while anything with heavy armour (T29, T32, T34 and King Tigers) forces the reliance on the M431 shell HEATFS to punch through frontally, taking multiple shots to overcome.

Mobility

Speedforward / back

AB51 / 9 km/h

RB and SB46 / 9 km/h

Number of gears7 forward

2 back

Weight34.3 t

Engine power

AB1 240 hp

RB and SB650 hp

Power-to-weight ratio

AB36.2 hp/t

RB and SB19.0 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	51	9	34.3	1,007	1,240	29.36	36.15
Realistic	46	9		575	650	16.76	18.95

Modifications and economy

Repair costBasic → Reference

AB3 005 → 4 146

RB3 607 → 4 977

SB4 713 → 6 503

Total cost of modifications52 600

90 800

Talisman cost1 700

Crew training57 000

Experts200 000

Aces800

Research Aces520 000

Reward for battleAB / RB / SB

120 / 180 / 200 %

172 / 172 / 172 %

Modifications

Mobility	Protection	Firepower
Tracks Research: 2 600 Cost: 4 500 165 Suspension Research: 2 400 Cost: 4 100 150 Brake System Research: 2 400 Cost: 4 100 150 Filters Research: 3 300 Cost: 5 700 210 Transmission Research: 3 400 Cost: 5 900 220 Engine Research: 3 400 Cost: 5 900 220	Improved Parts Research: 2 600 Cost: 4 500 165 Improved FPE Research: 2 400 Cost: 4 100 150 Crew Replenishment Research: 3 300 Cost: 5 700 210	Horizontal Drive Research: 2 600 Cost: 4 500 165 90mm_jp_M82_APCBC_ammo_pack Research: 2 600 Cost: 4 500 165 Adjustment of Fire Research: 2 400 Cost: 4 100 150 90mm_jp_M431_HEAT_ammo_pack Research: 2 400 Cost: 4 100 150 Elevation Mechanism Research: 3 300 Cost: 5 700 210 Smoke grenade Research: 3 300 Cost: 5 700 210 Artillery Support Research: 3 400 Cost: 5 900 220 90mm_us_M313_Smoke_ammo_pack Research: 3 400 Cost: 5 900 220 Rangefinder Research: 3 400 Cost: 5 900 220

Armaments

Rangefinder

Reduces the error and increases the maximum measurable distance of the rangefinder

Main armament

90 mm Type 61 cannon

Ammunition51 rounds

First-order22 rounds

Reloadbasic crew → aces

9.7 → 7.5 s

Vertical guidance-10° / 13°

90 mm Type 61					Turret rotation speed (°/s)					Reloading rate (seconds)
Mode	Capacity	Vertical	Horizontal	Stabilizer	Stock	Upgraded	Full	Expert	Aced	Stock	Full	Expert	Aced
Arcade	51	-10°/+13°	±180°	N/A	22.8	31.6	38.4	42.5	45.2	9.75	8.63	7.95	7.50
Realistic					14.3	16.8	20.4	22.6	24.0

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
M318A1 shot	APBC	194	190	177	162	148	136
M82 shot	APCBC	185	182	170	155	142	130
M431 shell	HEATFS	320	320	320	320	320	320
M71 shell	HE	20	20	18	17	15	14

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%
M318A1 shot	APBC	914	10.98	-	-	-	47°	60°	65°
M82 shot	APCBC	853	10.94	1.2	14	137.2	48°	63°	71°
M431 shell	HEATFS	1,216	5.8	0.05	0.1	712.64	65°	72°	77°
M71 shell	HE	823	10.55	0.2	0.1	925	79°	80°	81°

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)
M313	821	10.7	13	5	20	50

Ammo racks

Ammo racks of the Type 61

Full ammo	1st rack empty	2nd rack empty	3rd rack empty	4th rack empty	5th rack empty	Visual discrepancy
51	35 (+16)	23 (+28)	14 (+37)	11 (+40)	1 (+50)	No

Notes:

• Shells are modeled individually and disappear after having been shot or loaded.
• Racks 3, 4 and 5 are first stage ammo racks. They total 22 shells and get filled first when loading up the tank.
• These racks are also emptied early: the rack depletion order at full capacity is: 3 - 4 - 5 - 1 - 2.
• Simply not firing when the gun is loaded will move ammo from racks 1 and 2 into racks 5 then 4 and 3. Firing will interrupt the restocking of the ready racks.
• Floor racks empty: 23 (+28) shells.

Machine guns

12.7 mm M2HB machine gun

Ammunition600 rounds

Belt capacity200 rounds

Reloadbasic crew → aces

10.4 → 8.0 s

Fire rate575 shots/min

Vertical guidance-10° / 25°

7.62 mm M1919A4 machine gun (coaxial)

Ammunition4 000 rounds

Belt capacity250 rounds

Reloadbasic crew → aces

10.4 → 8.0 s

Fire rate500 shots/min

12.7 mm M2HB
Mount	Capacity (Belt)	Fire rate	Vertical	Horizontal
Pintle	600 (200)	575	-10°/+25°	±180°

7.62 mm M1919A4
Mount	Capacity (Belt)	Fire rate	Vertical	Horizontal
Coaxial	4,000 (250)	500	-	-

Usage in battles

The Type 61 has excellent horizontal traverse and gun depression combined with a fairly mobile chassis, making it a good choice for progressing from turret down (be careful about the large cupola sticking up), to hull down and firing at the opposition before retreating back to turret down cover.

Its mobility is quite good at getting it to position, where it can ambush tanks early in the game or change position when required, particularly when disengaging when its position is discovered.

Its lack of armour and the decent but not overwhelmingly powerful gun means it is not a wonderful frontline tank to hold a defensive position when the opposition knows its position, as its armour is unlike to prevent any opposition rounds from penetrating and dealing damage, leaving the user to more often than not, rely on luck when engaging opposition frontally.

The biggest issue with the Type 61 is shot selection. You have to choose between the M431 shell HEATFS which will punch through most opposition tanks, but inflict little damage and the M318A1 AP and M82 shot APHE rounds for more damage, but which will struggle to penetrate opposing tanks frontally at times.

Pros and cons

Pros:

• Fast turret rotation
• Excellent gun depression
• Good forward speed and mobility
• Good acceleration
• Great post-penetration damage on the M82 APCBC shell

Cons:

• 90 mm Type 61 can struggle to overcome certain opposing tanks frontally without relying on M431 HEATFS shell
• Very thin overall armour, any tank gun will make short work of the Type 61, and even certain SPAAs can give the tank trouble
• The reverse speed -8 km/h can hinder the tank at times
• Very tall profile with the cupola on top of the turret, makes using certain cover impossible

History

Development

With the subsequent events of the Japanese surrender in September 1945, the end of World War II, and the ensuing Allied occupation of Japan, the Japanese were ordered to lay down their military activities, essentially abolishing the Imperial Japanese Army and Navy. For a short period past VE-Day, Japan was without a military with the exception of the Allied troops still occupying the country. This stance on a Japanese military was reversed with the advent of the Cold War and the much-closer Korean War in the early 1950s. With the departure of a majority of the Allied troops from Japan to Korea, there was a concern on the vulnerability of Japan without the aid of these nations. So in 1954, Japan formally organized the Defense Agency heading the Japan Self-Defense Force (JSDF). To jump-start the remilitarization of the JSDF, the United States gave Japan a handful of M4A3E8 Shermans and M24 Chaffees. However, in the Japan Ground Self-Defense Force (JGSDF) service, these tanks presented some problems. The problems the Sherman presented was that its interior was too large for an average Japanese stature, with drivers unable to even reach the foot pedals, and the M24 Chaffee was just plain outdated against Soviet armour. The Japanese were then given options to replace these tanks with the newer American M46 Patton and M47 Patton or develop their own tank. Given the price of buying the tanks and the tanks not suiting to their specifications, the Japanese opted to develop their own tank for the JGSDF.

The initial specifications for the development of their domestic tank design followed as 1) Small enough to be train-transported, 2) Not be heavier than 25 tons, and 3) an armament of 90 mm calibre. The job of designing the tank was given to Mitsubishi, the same company responsible for making the majority of Japanese tanks in World War II. The first specification was important to not only improve cross-country travel but because if it could be followed, the tanks can be transported via truck transports as well. The second specification was a dodgy one in that 25 tons did not allow for much armour to be placed, but it was hoped a new engine could supplement a weight increase to 35 tons by improving mobility. When the new engine got delayed, the weight was reduced back to 25 tons to retain mobility. The last specification of a 90 mm gun was due to the Japanese experience with a M36 tank destroyer, believing the 90 mm to be sufficient in the mountainous region of Japan and be the limit where Japanese physique could adequately service the gun. These specifications would lead to the first prototype being developed in 1956.

In December 1956, the first prototype labelled ST-A1 was produced. Testing and various changes led to the second prototype, ST-A2, to be produced in February 1957. Two more prototypes labelled ST-A3 and ST-A4 were completed in 1959 and 1960 that led to the final production design to be produced in 1961. This would be accepted into service as the Type 61 main battle tank, with deployment to start within the same year. The Type 61 was formally adopted in 1961, but the starting numbers were low as production only put out 10 Type 61 tanks in the span of 1961 to 1962. This only marginally increases up to 1966, with 250 tanks. Production continued until 1975 with 560 tanks produced.

Service

The first few Type 61 tanks were put into service of the JGSDF. Due to low production numbers, it was supplemented with the tanks America gave it. The time the Type 61 was deployed, it was already quite outdated in comparison to Soviet contenders such as the T-54/55 and T-62 tanks. In 1962, the successor of the Type 61 was already in the development process. Even when it was finished, which would be the Type 74, the Type 61 would stick around as supplement due to low production numbers as well, starting from 1980.

The Type 61 would start being retired in the 1990s, showing its obvious age in comparison with newer third-generation main battle tanks. The transition can be seen in that 400 Type 61 were still in service in 1990 to 190 tanks in 1995. In this time period, the Type 61 went through a modernization program to add infrared searchlights and smoke dischargers. Regardless, all were decommissioned by 2000, paving the way to the newer Japanese tank designs.

Media

Skins

• Skins and camouflages for the Type 61 from live.warthunder.com.

See also

Related development

• Type 61 (Family)

Other vehicles of similar configuration and role

• Patton (Disambiguation)
  • M46
  • M47
  • M48

• T-54 (Family)
• AMX-30 (1972)
• M-51
• Ru 251
• Ikv 91

External links

• [Devblog] Type 61: The Japanese-style Patton
• [SENSHA Blog] - [WT] Type 61 MBT