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Type 91 Heavy

Type 91 Heavy

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Type 91 Heavy

AnnoJ21_Type_91.png
Battle Tier
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Overview
Mouse over "
Well, the ones further down, of course.
" for more information
[Client Values; Actual values in
Specifically, the mismatch in crew values caused by commander's 10% crew skill bonus. Outside of a crew of 1 commander only, 100% crew is a fiction. The client values, given for 100% crew, will normally be taken into battle with 110% crew skill members aside from specific functions, causing their actual performance to deviate from the expected client value. These differences are taken into account in tooltip boxes.
]
46,500  Credits Cost
250250 HP Hit Points
20/20.320.1/23 t Weight Limit
Crew
  1. Commander (Loader)
  2. Gunner
  3. Driver
  4. Radio Operator
  5. Radio Operator
Mobility
224250 hp Engine Power
25/13 km/h Speed Limit
3032 deg/s Traverse
11.212.44 hp/t Power/Wt Ratio
NoNo Pivot
Armor
20/15/15 mm Hull Armor
20/20/2020/20/20 mm Turret Armor
Armament







{{#ifeq:HOLLOW_CHARGE|ARMOR_PIERCING||



{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||


AP/HEAT/HE







{{#ifeq:ARMOR_PIERCING|ARMOR_PIERCING||



{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||


AP//HE
Shells




















25/2800/45




















20/1600/20
Shell Cost
100/100/16070/70/90 HP Damage
30/90/3581/122/25 mm Penetration



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15 r/m 

Standard Gun

Reload Times
Nominal: 4 s
50% Crew: 5.09 s
75% Crew: 4.48 s
100% Crew: 4 s
Rammer: 3.6 s
Vents: 3.91 s
Both: 3.52 s
Both and BiA: 3.45 s
Both and Max Crew %: 3.31 s

See Crew, Consumables, or Equipment for more information.



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28.57 r/m 

Standard Gun

Reload Times
Nominal: 2.1 s
50% Crew: 2.67 s
75% Crew: 2.35 s
100% Crew: 2.1 s
Rammer: 1.89 s
Vents: 2.05 s
Both: 1.85 s
Both and BiA: 1.81 s
Both and Max Crew %: 1.74 s

See Crew, Consumables, or Equipment for more information.
Rate of Fire






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1500

Standard Gun

Using Shell Type 1 (100 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1500
50% Crew: 1179
75% Crew: 1339
100% Crew: 1500
100% Crew
Vents: 1535
Rammer: 1667
Both: 1706
Both and BiA: 1738
Both and Max Crew %: 1813

Advantageous Damage Per Minute
First-shot DPM: 1600
50% Crew: 1279
75% Crew: 1439
100% Crew: 1600
100% Crew
Rammer: 1767
Vents: 1635
Both: 1806
Both and BiA: 1838
Both and Max Crew %: 1913

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (100 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1500
50% Crew: 1179
75% Crew: 1339
100% Crew: 1500
100% Crew
Vents: 1535
Rammer: 1667
Both: 1706
Both and BiA: 1738
Both and Max Crew %: 1813

Advantageous Damage Per Minute
First-shot DPM: 1600
50% Crew: 1279
75% Crew: 1439
100% Crew: 1600
100% Crew
Rammer: 1767
Vents: 1635
Both: 1806
Both and BiA: 1838
Both and Max Crew %: 1913

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (160 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 2400
50% Crew: 1886.4
75% Crew: 2142.4
100% Crew: 2400
100% Crew
Vents: 2456
Rammer: 2667.2
Both: 2729.6
Both and BiA: 2780.8
Both and Max Crew %: 2900.8

Advantageous Damage Per Minute
First-shot DPM: 2560
50% Crew: 2046.4
75% Crew: 2302.4
100% Crew: 2560
100% Crew
Rammer: 2827.2
Vents: 2616
Both: 2889.6
Both and BiA: 2940.8
Both and Max Crew %: 3060.8

See here, here, or here for more information.






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1999.9

Standard Gun

Using Shell Type 1 (70 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1999.9
50% Crew: 1571.5
75% Crew: 1785.7
100% Crew: 1999.9
100% Crew
Vents: 2046.8
Rammer: 2221.8
Both: 2274.3
Both and BiA: 2317.7
Both and Max Crew %: 2417.1

Advantageous Damage Per Minute
First-shot DPM: 2069.9
50% Crew: 1641.5
75% Crew: 1855.7
100% Crew: 2069.9
100% Crew
Rammer: 2291.8
Vents: 2116.8
Both: 2344.3
Both and BiA: 2387.7
Both and Max Crew %: 2487.1

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (70 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1999.9
50% Crew: 1571.5
75% Crew: 1785.7
100% Crew: 1999.9
100% Crew
Vents: 2046.8
Rammer: 2221.8
Both: 2274.3
Both and BiA: 2317.7
Both and Max Crew %: 2417.1

Advantageous Damage Per Minute
First-shot DPM: 2069.9
50% Crew: 1641.5
75% Crew: 1855.7
100% Crew: 2069.9
100% Crew
Rammer: 2291.8
Vents: 2116.8
Both: 2344.3
Both and BiA: 2387.7
Both and Max Crew %: 2487.1

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (90 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 2571.3
50% Crew: 2020.5
75% Crew: 2295.9
100% Crew: 2571.3
100% Crew
Vents: 2631.6
Rammer: 2856.6
Both: 2924.1
Both and BiA: 2979.9
Both and Max Crew %: 3107.7

Advantageous Damage Per Minute
First-shot DPM: 2661.3
50% Crew: 2110.5
75% Crew: 2385.9
100% Crew: 2661.3
100% Crew
Rammer: 2946.6
Vents: 2721.6
Both: 3014.1
Both and BiA: 3069.9
Both and Max Crew %: 3197.7

See here, here, or here for more information.
Damage Per Minute


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0.48 m 

With 50% Crew: 0.595 m
With 75% Crew: 0.519 m
With 100% Crew: 0.46 m
With BiA: 0.45 m
With BiA and Vents: 0.44 m
Maximum possible: 0.422 m

For more details, see Crew


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0.4 m 

With 50% Crew: 0.496 m
With 75% Crew: 0.433 m
With 100% Crew: 0.384 m
With BiA: 0.375 m
With BiA and Vents: 0.367 m
Maximum possible: 0.352 m

For more details, see Crew
Accuracy


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2.6 s 

With 50% Crew: 3.221 s
With 75% Crew: 2.812 s
With 100% Crew: 2.493 s
With GLD: 2.266 s
With BiA: 2.438 s
With BiA and Vents: 2.385 s
With both and GLD: 2.168 s
Maximum possible: 2.078 s

For more details, see Crew or Equipment


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2.1 s 

With 50% Crew: 2.601 s
With 75% Crew: 2.271 s
With 100% Crew: 2.014 s
With GLD: 1.831 s
With BiA: 1.969 s
With BiA and Vents: 1.926 s
With both and GLD: 1.751 s
Maximum possible: 1.679 s

For more details, see Crew or Equipment
Aim time
3030 deg/s Turret Traverse
360° Gun Arc
-12°/+20°-12°/+20° Elevation Arc
100150 rounds Ammo Capacity
General
2020 % Chance of Fire






330 m 

With 50% Crew: 259.3 m
With 75% Crew: 294.7 m
With 100% Crew: 330 m
With Recon and Situational Awareness: 346.7 m
With Coated Optics: 363 m
With Binocular Telescope: 412.5 m
Maximum possible: 472.4 m

For more details, see Skills or Equipment






330 m 

With 50% Crew: 259.3 m
With 75% Crew: 294.7 m
With 100% Crew: 330 m
With Recon and Situational Awareness: 346.7 m
With Coated Optics: 363 m
With Binocular Telescope: 412.5 m
Maximum possible: 472.4 m

For more details, see Skills or Equipment
View Range


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300 m 

With 50% Crew: 242.2 m
With 75% Crew: 277.4 m
With 100% Crew: 312.9 m
With 100% Signal Boost: 360 m
When affected by 100% Relaying: 330 m
Maximum possible: 450.4 m

For more details, see Skills or Equipment


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425 m 

With 50% Crew: 343.1 m
With 75% Crew: 392.9 m
With 100% Crew: 443.2 m
With 100% Signal Boost: 510 m
When affected by 100% Relaying: 467.5 m
Maximum possible: 638 m

For more details, see Skills or Equipment
Signal Range
Values are Stock - click for Top


III

AnnoJ21_Type_91.png

46500

The Type 91 Heavy is a Japanese tier 3 heavy tank.

Development of the Type 91, the three-turret 18-ton Japanese tank, started in 1927 and was completed in 1932. The vehicle never entered mass production. Only one prototype was built.

The Type 91 Heavy is the lowest tier Heavy tank in the game and also the earliest heavy tank in Japanese Heavy line. But, Do not let its "Heavy" class trick you - its "Heavy Armor" is extremely thin (Even some tier 1 tanks have better armor thickness than this tank!). It's also large and slow, which makes it very vulnerable to enemy fire. However, this tank offers derp gun that is powerful enough to one or two shot any tank in the same tier (assuming you can hit or penetrate) and a top gun which has monstrous penetration and DPM for its tier.

The Type 91 Heavy leads to the Type 95 Heavy.

Modules / Available Equipment and Consumables

Modules

Ico_gun_alpha.png

Guns

Tier Gun Penetration
(mm)
Damage
(HP)
Rate of fire
(rounds/minute)
Dispersion
(m/100m)
Aiming time
(s)
Weight
(kg)
Price
(Credits)

IV 47 mm Gun Type 1 81/122/25 70/70/90 28.57 0.4 2.1 411 21000
III 7 cm Gun Type 94 30/90/35 100/100/160 15 0.48 2.6 325 9500

Ico_turret_alpha.png

Turrets

Tier Turret Turret Armor (front/sides/rear)
(mm)
Turret Traverse Speed
(deg/s)
View Range
(m)
Weight
(kg)
Price
(Credits)

III Type 91 Heavy 20/20/20 30 330 1500 2000

Ico_engine_alpha.png

Engines

Tier Engine Engine Power
(hp)
Chance of Fire on Impact
(%)
Weight
(kg)
Price
(Credits)

III BMW IV 224 20 290 4900
III BMW IV Kai 250 20 290 7800

Ico_suspension_alpha.png

Suspensions

Tier Suspension Load Limit
(т)
Traverse Speed
(гр/сек)
Rmin Weight
(kg)
Price
(Credits)

II Dai-chi Osaka Sensha 20.3 30 B/2 5000 800
III Type 91 Heavy 23 32 B/2 5000 2200

Ico_radio_alpha.png

Radios

Tier Radio Signal Range
(м)
Weight
(kg)
Price
(Credits)

II Type 94 Mk. 4 Otsu 300 40 0
IV Type 94 Mk. 4 Hei 350 90 2350
VI Type 96 Mk. 4 Bo 425 50 14000


Compatible Equipment

Heavy Spall Liner Camouflage Net Coated Optics Experimental Optics Wear-Resistant Gun Laying Drive Venting System Extended Spare Parts Kit Enhanced Gun Laying Drive Enhanced Springs Improved Ventilation Class 3 Binocular Telescope Toolbox "Wet" Ammo Rack Class 1 

Compatible Consumables

Automatic Fire Extinguisher Natural Cover Optical Calibration Aim Tuning Experienced Firefighters Manual Fire Extinguisher Vent Purge Large First Aid Kit Large Repair Kit Duty Comes First Shell Organizer Quality Oil Focus on Target Onigiri Increased Focus Small First Aid Kit Small Repair Kit Gearbox Intricacy Steady Hand Pre-Battle Maintenance Combat Course 


Player Opinion

Pros and Cons

Pros:

- Stock gun's HE rounds offer more penetration than AP rounds, yet they deal enough damage to two-shot any tank in the same tier.

- Very powerful top gun, combining good damage, penetration and rate of fire

- Fairly small turret with good gun depression

- Tied with British Medium MK.III for second highest HP pools in Tier 3 (280)

- Very fast grinding; It doesn't need new treads to equip heavier equipment and only has one avaliable turret. You can just spam HE on enemy and get past this tank in no time.


Cons:

- Despite being classified as Heavy Tank, its armor is weaker than some of tier 1 LT. Even HE rounds from your own stock gun would penetrate for full damage.

- Hull surfaces are mostly flat so don't expect to bounce anything.

- Very slow; very large; very poor view range.

- Front machine gun turrets limit forward gun depression

- Top gun had fairly expensive research cost, is too heavy for stock tracks and is not used on the next tier up. However, it is shared with other low-tier Japanese tanks and can be unlocked by them.

- Very weak ammo rack gets blown up often; factoring in generally poor gun handling makes this a disaster.


Performance

The Type 91 has a reputation for being one of the worst tanks in the game, and will do everything possible to live up to this reputation. The stock gun is horrific, struggling to penetrate other heavy tanks (except other Type 91s), with poor accuracy and a reload time which will feel like an eternity. Use of HE ammo is recommended as it actually has higher penetration than the standard AP round; even if it fails to pen it may gift you a small amount of damage as consolation. HEAT rounds offer vastly improved penetration and these should be considered mandatory for players looking to deal damage using the stock gun; bear in mind that this can be very expensive, especially for a low tier tank, as you may need to use quite a few.

Think of the Type 91 as a medium tank with a high hitpool and lower speed. You will need that hitpool because you are an artillery player's dream, and using the stock gun, you are simply a mobile XP booster for enemy heavies. Do not ever rely on your armour even when angled: a piece of paper held at a diagonal angle is still a piece of paper. Do not under any circumstances engage tanks with autoloaders such as the Panzer I C or the Cruisers III and IV.

Things improve markedly for those who persevere to the second gun. It is very good at taking out same and lower tier targets and in higher tier battles can even scratch tier 5's. Bear in mind that if you mount equipment, your stock tracks simply cannot bear the weight of the second gun, so bear this in mind if you decide to use free XP for the gun.


Gallery

Historical Info

The Type 91 heavy tank was an experimental multi-turreted tank built in 1931. This tanks was designed to be an improvement from the Experimental Tank 1 (試製一号戦車). The tank had three turrets - the primary turret had a Type 90 57mm cannon and a 6.5mm machine gun in the back of the turret, while the front and rear secondary turrets were armed with 6.5mm machine guns, though other sources indicate that these were 7.7mm machine guns. The 57mm gun was eventually replaced by the Type 94 70mm gun. The tank had 5 crew members - 1 gunner for each turret, a commander, and a driver.


Despite being a heavy tank, the Type 91 had rather thin armor - only 20mm at the most. This was thought to be sufficient protection at 50 meters from the 37mm weapons of the period, such as the French SA18.

The tank had a complicated parallelogram suspension of with two pairs of road wheels per leaf-sprung bogie. There were 17 road wheels per side, giving it a total of 34 road wheels. It shared this type of suspension with the Experimental Tank 1. The engine was a BMW 6-cylinder gasoline engine with 224 horsepower, an improvement over the Experimental Tank 1's Mitsubishi 8-cylinder gasoline engine with 140 horsepower. This gave the Type 91 a top speed of 25 kph, compared to 20 kph of its predecessor.

The Type 91 had a length of 6.30 meters, a width of 2.47 meters, and a height of 2.57 meters. Its total weight was 18.0 tons, giving it a power-to-weight ratio of 12.44 horsepower/tons.

The Type 91 passed its trials and fulfilled the requirements of its design, but was not accepted for production. This was due to the Japanese Army's decision to build more light tanks as opposed to fewer heavy tanks. The work done on the Type 91 was later incorporated into the Type 95 heavy tank.

The last known photograph of the Type 91 indicates that, after being rejected for production, it ended up in a scrapyard where it remained until after World War II, when it was found by Americans.


Historical Gallery

Historical Accuracy Errata

The following are consensus errors or inconsistencies which have been identified with the configuration of the vehicle in question and conflict with information available on the public record. The causes for these divergences in the game are normally not disclosed and may be rooted in game balance.

* The Type 91 is missing the 57mm Type 90, which the vehicle originally had before it was replaced with the Type 94 70mm. It never had the the 47mm gun, which was developed after the project was cancelled.
  • The Type 91's weight was historically 18 tons. However, it weighs 20 tons in World of Tanks.


Sources and External Links

Japan
Light Tanks IRenault Otsu IIType 95 Ha-Go IIType 97 Te-Ke IIIType 98 Ke-Ni IVType 5 Ke-Ho
Medium Tanks IIChi-Ni IIType 89 I-Go/Chi-Ro IIIType 97 Chi-Ha IVType 1 Chi-He VType 3 Chi-Nu VType 3 Chi-Nu Kai VIType 4 Chi-To VIIType 5 Chi-Ri VIIISTA-1 VIIISTA-2 IXType 61 XSTB-1
Heavy Tanks IIIType 91 Heavy IVType 95 Heavy VO-I Experimental VIHeavy Tank No. VI VIO-I VIIO-Ni VIIIO-Ho IXType 4 Heavy XType 5 Heavy
Tank Destroyers
Self-Propelled Artillery
Heavy Tanks
USA VT14 VT1 Heavy Tank VIM6 VIIT29 VIIIChrysler K GF VIIIT26E5 VIIIM6A2E1 VIIIT32 VIIIT34 VIIIT34 B IXM103 XT110E5 XT57 Heavy Tank
UK VChurchill I VExcelsior VIChurchill VII VITOG II* VIIBlack Prince VIIFV201 (A45) VIIICaernarvon VIIICaernarvon Action X IXConqueror XFV215b XSuper Conqueror
Germany IVPz.Kpfw. B2 740 (f) IVDurchbruchswagen 2 VVK 30.01 (H) VITiger 131 VIVK 36.01 (H) VIIVK 45.03 VIITiger I VIITiger (P) VIIIVK 100.01 (P) VIIIVK 168.01 (P) VIIILöwe VIIITiger II VIIIVK 45.02 (P) Ausf. A IXE 75 IXMäuschen IXVK 45.02 (P) Ausf. B XE 100 XPz.Kpfw. VII XMaus XVK 72.01 (K)
France IVB1 VBDR G1 B VIARL 44 VIIAMX M4 mle. 45 VIIIAMX 50 100 VIIIAMX M4 mle. 49 VIIIAMX 65 t VIIISomua SM VIIIFCM 50 t IXAMX 50 120 IXAMX M4 mle. 51 XAMX 50 B XAMX M4 mle. 54
USSR VChurchill III VKV-1S VKV-220-2 VKV-220-2 Beta Test VKV-1 VIKV-2 VIKV-2 (R) VIKV-85 VIT-150 VIIIS VIIKV-3 VIIKV-122 VIIIS-2 VIIIIS-3 VIIIIS-6 VIIIKV-5 VIIIKV-4 VIIIIS-5 (Object 730) VIIIIS-3A VIIIKV-4 Kreslavskiy VIIIObject 252U Defender VIIIObject 252U VIIIIS-M IXT-10 IXObject 257 IXObject 705 IXST-I XIS-4 XIS-7 XObject 260 XObject 705A XObject 277
China VIIIS-2 VIIIWZ-111 VIIIWZ-111 Alpine Tiger VIII110 VIII112 IXWZ-111 model 1-4 X113 XWZ-111 model 5A
Japan IIIType 91 Heavy IVType 95 Heavy VO-I Experimental VIHeavy Tank No. VI VIO-I VIIO-Ni VIIIO-Ho IXType 4 Heavy XType 5 Heavy
Czechoslovakia
Sweden VIIIEmil I IXEmil II XKranvagn
Italy
Poland VII45TP Habicha VIII50TP prototyp VIII53TP Markowskiego IX50TP Tyszkiewicza X60TP Lewandowskiego