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Type 4 Heavy

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Type 4 Heavy

AnnoJ25_Type_4.png
Battle Tier
1234567891011
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.
]
3,700,000  Credits Cost
20502050 HP Hit Points
158.65/160161.61/170 t Weight Limit
Crew
  1. Commander
  2. Gunner
  3. Driver
  4. Radio Operator
  5. Loader
  6. Loader
Mobility
11001200 hp Engine Power
25/10 km/h Speed Limit
1517 deg/s Traverse
6.937.43 hp/t Power/Wt Ratio
NoNo Pivot
Armor
250/140/150 mm Hull Armor
250/200/200250/200/200 mm Turret Armor
Armament







{{#ifeq:ARMOR_PIERCING|ARMOR_PIERCING||



{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||


AP//HE







{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||



{{#ifeq:|ARMOR_PIERCING||


HE/HE
Shells




















0/4800/670




















0/6400/670
Shell Cost
450/450/6101100/1400/610 HP Damage
230/258/6475/75/64 mm Penetration



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3.68 r/m 

Standard Gun

Reload Times
Nominal: 16.3 s
50% Crew: 20.19 s
75% Crew: 17.63 s
100% Crew: 15.63 s
Rammer: 14.07 s
Vents: 15.29 s
Both: 13.76 s
Both and BiA: 13.46 s
Both and Max Crew %: 12.9 s

See Crew, Consumables, or Equipment for more information.



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2.45 r/m 

Standard Gun

Reload Times
Nominal: 24.5 s
50% Crew: 30.35 s
75% Crew: 26.5 s
100% Crew: 23.49 s
Rammer: 21.14 s
Vents: 22.97 s
Both: 20.68 s
Both and BiA: 20.23 s
Both and Max Crew %: 19.39 s

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






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2700

Standard Gun

Using Shell Type 1 (450 Damage):


Theoretical Damage Per Minute
Nominal DPM: 2700
50% Crew: 2178
75% Crew: 2497.5
100% Crew: 2817
100% Crew
Vents: 2880
Rammer: 3132
Both: 3199.5
Both and BiA: 3271.5
Both and Max Crew %: 3411

Advantageous Damage Per Minute
First-shot DPM: 3150
50% Crew: 2628
75% Crew: 2947.5
100% Crew: 3267
100% Crew
Rammer: 3582
Vents: 3330
Both: 3649.5
Both and BiA: 3721.5
Both and Max Crew %: 3861

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (450 Damage):


Theoretical Damage Per Minute
Nominal DPM: 2700
50% Crew: 2178
75% Crew: 2497.5
100% Crew: 2817
100% Crew
Vents: 2880
Rammer: 3132
Both: 3199.5
Both and BiA: 3271.5
Both and Max Crew %: 3411

Advantageous Damage Per Minute
First-shot DPM: 3150
50% Crew: 2628
75% Crew: 2947.5
100% Crew: 3267
100% Crew
Rammer: 3582
Vents: 3330
Both: 3649.5
Both and BiA: 3721.5
Both and Max Crew %: 3861

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (610 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 3660
50% Crew: 2952.4
75% Crew: 3385.5
100% Crew: 3818.6
100% Crew
Vents: 3904
Rammer: 4245.6
Both: 4337.1
Both and BiA: 4434.7
Both and Max Crew %: 4623.8

Advantageous Damage Per Minute
First-shot DPM: 4270
50% Crew: 3562.4
75% Crew: 3995.5
100% Crew: 4428.6
100% Crew
Rammer: 4855.6
Vents: 4514
Both: 4947.1
Both and BiA: 5044.7
Both and Max Crew %: 5233.8

See here, here, or here for more information.






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2695

Standard Gun

Using Shell Type 1 (1100 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 2695
50% Crew: 2178
75% Crew: 2497
100% Crew: 2816
100% Crew
Vents: 2882
Rammer: 3124
Both: 3201
Both and BiA: 3267
Both and Max Crew %: 3410

Advantageous Damage Per Minute
First-shot DPM: 3795
50% Crew: 3278
75% Crew: 3597
100% Crew: 3916
100% Crew
Rammer: 4224
Vents: 3982
Both: 4301
Both and BiA: 4367
Both and Max Crew %: 4510

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (1400 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 3430
50% Crew: 2772
75% Crew: 3178
100% Crew: 3584
100% Crew
Vents: 3668
Rammer: 3976
Both: 4074
Both and BiA: 4158
Both and Max Crew %: 4340

Advantageous Damage Per Minute
First-shot DPM: 4830
50% Crew: 4172
75% Crew: 4578
100% Crew: 4984
100% Crew
Rammer: 5376
Vents: 5068
Both: 5474
Both and BiA: 5558
Both and Max Crew %: 5740

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (610 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1494.5
50% Crew: 1207.8
75% Crew: 1384.7
100% Crew: 1561.6
100% Crew
Vents: 1598.2
Rammer: 1732.4
Both: 1775.1
Both and BiA: 1811.7
Both and Max Crew %: 1891

Advantageous Damage Per Minute
First-shot DPM: 2104.5
50% Crew: 1817.8
75% Crew: 1994.7
100% Crew: 2171.6
100% Crew
Rammer: 2342.4
Vents: 2208.2
Both: 2385.1
Both and BiA: 2421.7
Both and Max Crew %: 2501

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


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0.38 m 

With 50% Crew: 0.471 m
With 75% Crew: 0.411 m
With 100% Crew: 0.364 m
With BiA: 0.356 m
With BiA and Vents: 0.349 m
Maximum possible: 0.334 m

For more details, see Crew


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0.52 m 

With 50% Crew: 0.644 m
With 75% Crew: 0.562 m
With 100% Crew: 0.499 m
With BiA: 0.488 m
With BiA and Vents: 0.477 m
Maximum possible: 0.457 m

For more details, see Crew
Accuracy


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2.3 s 

With 50% Crew: 2.849 s
With 75% Crew: 2.488 s
With 100% Crew: 2.205 s
With GLD: 2.005 s
With BiA: 2.157 s
With BiA and Vents: 2.11 s
With both and GLD: 1.918 s
Maximum possible: 1.839 s

For more details, see Crew or Equipment


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3.2 s 

With 50% Crew: 3.964 s
With 75% Crew: 3.461 s
With 100% Crew: 3.068 s
With GLD: 2.789 s
With BiA: 3.001 s
With BiA and Vents: 2.935 s
With both and GLD: 2.669 s
Maximum possible: 2.558 s

For more details, see Crew or Equipment
Aim time
1717 deg/s Turret Traverse
360° Gun Arc
-10°/+20°-10°/+20° Elevation Arc
8040 rounds Ammo Capacity
General
2020 % Chance of Fire






390 m 

With 50% Crew: 306.4 m
With 75% Crew: 348.2 m
With 100% Crew: 390 m
With Recon and Situational Awareness: 409.7 m
With Coated Optics: 429 m
With Binocular Telescope: 487.5 m
Maximum possible: 558.3 m

For more details, see Skills or Equipment






390 m 

With 50% Crew: 306.4 m
With 75% Crew: 348.2 m
With 100% Crew: 390 m
With Recon and Situational Awareness: 409.7 m
With Coated Optics: 429 m
With Binocular Telescope: 487.5 m
Maximum possible: 558.3 m

For more details, see Skills or Equipment
View Range


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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


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750 m 

With 50% Crew: 605.4 m
With 75% Crew: 693.4 m
With 100% Crew: 782.2 m
With 100% Signal Boost: 900 m
When affected by 100% Relaying: 825 m
Maximum possible: 1125.9 m

For more details, see Skills or Equipment
Signal Range
Values are Stock - click for Top
Type 4 Heavy


IX

AnnoJ25_Type_4.png

3700000

The Type 4 Heavy is a Japanese tier 9 heavy tank.

The Type 4, also known as the Type 2604, is a variant of the superheavy O-I tank that was developed during World War II. The vehicle was designed for breakthrough attacks on enemy fortifications as well as for coastal defense.

The Type 4 Heavy or just simply called Type 4 has bit different design compared to earlier Japanese heavies. It has much thicker overall armor, and it has completely different guns; it no longer carries similar 10cm guns or 15cm Type 96 howitzer like them, but has whole new bunch of huge naval guns. Compared to O-Ho, it no longer carries miniturrets that limits frontal depression. It also has very thick tracks that is effective for absorb the damage.

While Type 4 has much thicker side armor than predecessors, its cheeks on hull are now noticeably weaker than frontal hull armor. Combined with the fact that ammorack is located behind them, Type 4 isn't still good at sidescraping. Furthermore, its heaviest tank in the line (160 tons) but carries the same 1200 HP engine, which makes it even slower than other tanks on the line. All of its guns have dreadful rate of fire, accuracy, DPM and gun handling.

Type 4, while slow and clumsy, can be relatively respectable opponent due to its huge guns and thick armor. It shares few traits among with its brother, Type 5 Heavy, which prepares the player for it. However, it has few extra weaknesses compared to its brother, such as weaker cheek armor, noticeably weaker turret armor and much worse soft stats on its guns.


The Type 4 Heavy leads to the Type 5 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)

X 14 cm/50 3rd Year Type 249/282/70 600/600/770 3.03 0.42 2.9 5600 330000
IX 12.7 cm/50 3rd Year Type 230/258/64 450/450/610 3.68 0.38 2.3 4245 230000
X 15 cm/45 41st Year Type 75/75/64 1100/1400/610 2.45 0.52 3.2 6700 332000

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)

IX Type 4 Heavy 250/200/200 17 390 35000 50000

Ico_engine_alpha.png

Engines

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

VII 2x Kawasaki Type 98 V-12 (550) 1100 20 1020 51000
VIII 2x Kawasaki Type 98 V-12 (600) 1200 20 1020 77500

Ico_suspension_alpha.png

Suspensions

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

VIII Type 4 Heavy 160 15 B/2 40000 34000
IX Type 4 Heavy Kai 170 17 B/2 40000 68000

Ico_radio_alpha.png

Radios

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

VI Type 96 Mk. 4 Bo 425 50 14000
VIII Type 3 Otsu 550 240 22000
X Type 3 Ko 750 560 54000


Compatible Equipment

Vertical Stabilizer Mk 2 Superheavy Spall Liner Camouflage Net Fill Tanks with CO2 Coated Optics Stabilizing Equipment System Experimental Optics Wear-Resistant Gun Laying Drive Venting System Innovative Loading System Extended Spare Parts Kit Enhanced Gun Laying Drive Enhanced Torsion Bars 5+ t Class Improved Ventilation Class 3 Large-Caliber Tank Gun Rammer Binocular Telescope Toolbox "Wet" Ammo Rack Class 2 

Compatible Consumables

Stabilizer Greasing 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 Orderly Ammo Rack 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:

- Absolutely monstrous thickness on its armor for tier 9 with lack of weakspots that can bounce even tier 10 standard rounds

- Third highest HP in its tier (2050)

- Excellent gun depression with 14cm gun(-10)

- Thick tracks that counts as thick armor can absorb shots effectively.

- Choice of two guns; both of them has huge damage potential for tier 9, as 14cm has highest AP damage of all tier 9 heavies while 15,2cm is capable of oneshot most of tier 7s and many tier 8s with premium HE!

- 3rd heaviest tank in the game; can easily push other tanks, wrecks and takes very little damage from ramming

- Shares same engine as earlier Japanese heavies, doesn't have additional turret and 12,7cm is better than average tier 9 stock gun; easier stock grind than most tier 9s


Cons:

- Very poor mobility, struggles to reach even its already low top speed

- One of the biggest tanks in the game with extremely poor camo values; priority target to SPG

- Terrible rate of fire, aim time, accuracy and DPM on both guns

- Hull cheeks became weakspot when not angled correctly; ammorack is located behind them

- Flat armor makes it very vulnerable to tier 10 and many tier 9 gold rounds and TDs in same and higher tiers.

- Huge ammorack can be easily damaged from side and from hull cheeks

- 15.2 cm howitzer has poor gun depression on front (-6.5)


Performance

Arguably one of the worse tier 9 heavies in the game, the Type 4 boasts incredible armour and alpha damage for it's tier. Staying near cover is a must considering its one of the biggest tanks in the game, making sure to not get hit by TDs, which often have enough penetration to go through the armor of Type, and artillery. Avoid going open areas as much as possible because this tank's camo value is laughably poor. Gun has poor dispersion, very long reload, aim time and mediocre gold penetration, meaning that you need to fight enemies as close as possible. Mobility is very poor though; worse than Maus, so you need to predict few minutes to ahead and have good map awareness to minimize chances to get left in behind. Avoid sidescraping, since hull cheeks are weak and has ammoracks located behind them. Instead, come out from corners by angling your hullfront and hiding hull cheek behind the corner. This is safest option since your lowerplate is as tough as front. Never go alone, because Type is big, slow and has very long reload. High alpha damage makes this tank relatively good at peek-a-booing. Having allies is again must to make you less vulnerable during your reload. Hulldown option is also usable with -10 degrees of gun depression. Lastly, you can reverse sidescrape unlike your big brother, Type 5 Heavy, since Type 4 entire rear can be covered behind buildings, exposing only your side and turret.

Overall, Type 4 can be relatively frustating tank to play due to size, poor mobility and very poor gun stats apart from damage and regular AP penetration, but on few situations, the tank can do its work very well.


Early Research

Engine is carried over from earlier Japanese heavies, mount it immediately. 14cm doesnt need tracks if you dont have ANY equipment; however in order to mount equipment and 14cm, tracks are necessary. You can go first for 14cm and remove equipment until you get improved tracks, or get tracks first and then get 14cm. After that, you can either go for Type 5 Heavy or research 15,2cm gun. Keep on mind that researching 15,2cm will immediately elite the Type 5 Heavy, and it can be mounted immediately on Type 5 if it has been researched on Type 4.


Suggested Equipment


Improved VentilationSpall Liner Tank Gun Rammer "Wet" Ammo Rack Vertical Stabilizer Improved VentillationCoated Optics 


Gallery

Historical Info

The O-I super-heavy tank was sent to mobility tests in 1943. The vehicle however suffered issues in the mobility tests, which resulted in termination of the project. Fate of the O-I prototype is still unknown. However, it was apparent that Japan didn't want to give up with super-heavy tank designs.


This most likely resulted into developing a new super-heavy tank design. In 1944, a new super-heavy tank design was ready. This single prototype likely was accepted to service as designation "Type 4". The vehicle is also sometimes referred as "Type 2604", though Japan never actually refererred anything with the full year designation (for example, Type 2597 Chi-Ha is often shortened to just Type 97 Chi-Ha). However, since the vehicle was the 2nd super-heavy tank design of Japan, it was very likely that the full designation was "Type 4 O-Ro".

The main difference on the vehicle was lack of multi-turret design of O-I. At this point, it was widely accepted that multi-turret concept doesn't work, and Japan was no expection. The main turret, instead of being shaped like hexagon, was shaped similarly to medium tank designs like Chi-To or Chi-Ri. The main armament was likely a 14 cm naval gun, commonly used on coastal fortifications, which given the intented role of the vehicle as moving bunker was logical option.

The O-Ro had two 12 cylinder BMW marine engines with a rather complicated cooling system of three radiators per engine and one oil radiator, cooled by two central massive ventilators, powered by the drive train. The air is sucked in via massive grilles, positioned in the center over the engine compartment. The main advantage of the design was high protection of the engine from overheating.

It is said that the O-Ro entered service and was shipped into Manchuria. However, for unknown reasons, the turret was removed from the vehicle and placed on a stalemate bunker. Whether the tank itself broke down, was destroyed or just abandoned is mystery. The bunker and turret was found by Red Army after WW2 and photographed. However, some specifics like armor values are still not known.


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.

There are no visual images of the hull of the Type 4, however, there is an image of rough sketch of the Type 5. The in-game Type 5 is inaccurately different from the hull on the sketch, so assuming the Type 4 is almost the same tank, it is likely that its equally also inaccurate. In-game Type 4/5's hull-design is closer to that of mediums tanks like the Chi-To or Chi-Ri, while the one on the sketch of the Type 5 (again, front part of the Type 4's hull is likely identical) is more similar to that of the O-I. For example, the sketch has no evidence of the hull cheeks.


In addition, there are quite a few errors on the Type 4 Heavy:

  • Due to very limited information, some specifics like top speed, weight and armor are all speculation. Armor in especial is very likely thicker in-game than what it actually was, done mostly due to balance purposes.
  • While it is not mentioned anywhere, it is likely that the full designation of vehicle was "Type 4 O-Ro", which stands for "2nd super-heavy tank", as the vehicle was the second super-heavy design after the O-I
  • In-game description is somewhat inaccurate. While the Type 4/5 likely shared some design ideas and is possibly even an evolution of the O-I, it most likely is not direct modification of it.
  • Neither 12.7 or 15.2 cm guns were never proposed to be used on Type 4 O-Ro.


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 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) 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 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-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 IXT-10 IXST-I XIS-4 XIS-7 XObject 260
China VIIIS-2 VIIIWZ-111 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
Poland