IS-4M

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Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator

General info

The IS-4M in the Garage.

The IS-4M is a Rank V Soviet heavy tank with a battle rating of 7.7. It was introduced during the closed beta testing for Ground Forces before Update 1.41.

The main purpose, usage and tactics recommendations

General play style

Used as a heavy tank to deflect enemy fire, giving allied vehicles additional assistance. The 122mm cannon is most effective in close range engagements, where accuracy is not a concern, because of its long reload. However, long-range firing can be equally devastating if the shell hits the target.

Vehicle characteristics

Tactics

Specific enemies worth noting

Counter-tactics

Pros and cons

Pros:

  • Fast for a heavy tank
  • Fantastic armour, Almost invulnerable to most munitions when angled properly
  • Notoriety as a beast of a vehicle is enough to scare off opponents
  • Small weak spots in general
  • Penetrating shells on enemy armour can cause devastating damage, often resulting in a one-shot kill

Cons:

  • Frontal weak spot (Drivers port)
  • Low amount of ammunition (only 27)
  • Long reload, smart players will rush you when they know you are reloading
  • Ammunition is stored in the back of the turret, one of the vehicle's most vulnerable spots
  • Sometimes enemies get off lucky turret roof shots
  • Being penetrated from the front usually means ammo-rack or 3-less crew
  • Can be killed by almost all tanks from the front thanks to the visible but small hole in the front of the turret, which is only 50 mm thick
  • Vulnerable to post-war munitions like the shells fired from the L7A3 cannon mounted on Leopard tanks

Specifications

Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator

Armaments

1 x 122 mm D-25T cannon (30 Rounds)
2 x 12.7 mm DShK machine gun (1,250 Rounds)

Main armament

1 x 122 mm D-25T cannon
  • Ammunition Capacity: 30 Shells
  • Gun Depression: -3°
  • Gun Elevation: 19°
  • Turret Rotation Speed: 5.9°/s (Stock), __._°/s (Upgraded), __._°/s (Prior + Full Crew), __._°/s (Prior + Expert Qualif.), __._°/s (Prior + Ace Qualif.)
  • Rate of Fire: 27.1s (Stock), __._s (Full Crew), __._s (Prior + Expert Qualif.), __._s (Prior + Ace Qualif.)
1 x 122 mm D-25T cannon
  • Ammunition Capacity: 30 Shells
  • Gun Depression: -3°
  • Gun Elevation: 19°
  • Turret Rotation Speed: 5.9°/s (Stock), __._°/s (Upgraded), __._°/s (Prior + Full Crew), __._°/s (Prior + Expert Qualif.), __._°/s (Prior + Ace Qualif.)
  • Rate of Fire: 27.1s (Stock), __._s (Full Crew), __._s (Prior + Expert Qualif.), __._s (Prior + Ace Qualif.)
1 x 122 mm D-25T cannon
  • Ammunition Capacity: 30 Shells
  • Gun Depression: -3°
  • Gun Elevation: 19°
  • Turret Rotation Speed: 5.9°/s (Stock), __._°/s (Upgraded), __._°/s (Prior + Full Crew), __._°/s (Prior + Expert Qualif.), __._°/s (Prior + Ace Qualif.)
  • Rate of Fire: 27.1s (Stock), __._s (Full Crew), __._s (Prior + Expert Qualif.), __._s (Prior + Ace Qualif.)
Ammunition
Ammunition Penetration in mm @ 90° Type of
warhead
Velocity
in m/s
Projectile
Mass in kg
Fuse delay
in m:
Fuse sensitivity
in mm:
Explosive Mass in
TNT equivalent
in g:
Normalization At 30°
from horizontal:
Ricochet:
10m 100m 500m 1000m 1500m 2000m 0% 50% 100%
BR-471 200 196 179 158 141 125 APHE 795 25 1.2 15 272 -1° 43° 30° 25°
BR-471B 207 201 183 162 144 129 APHEBC 800 25 1.2 15 272 +4° 42° 27° 19°
BR-471D 230 223 203 180 168 159 APCBC 800 25 1.2 15 212.5 +4° 42° 27° 19°
OF-471 36 36 36 36 36 36 HE 800 25 0.1 0.1 3,600 +0° 11° 10°
Ammo racks
Ammo racks of the IS-4M.
Full
ammo
Ammo
Part
1st
rack empty
2nd
rack empty
3rd
rack empty
4th
rack empty
5th
rack empty
6th
rack empty
Recommendations Visual
discrepancy
30 Projectiles
Propellants
29 (+1)
29 (+1)
24 (+6)
24 (+6)
19 (+11)
19 (+11)
14 (+16)
14 (+16)
(+21)
(+21)
(+29)
(+29)
Keep full no

Secondary armaments

1 x 12.7 mm DShK machine gun (coaxial)
1 x 12.7 mm DShK machine gun (pintle-mount)

Crew

  • Commander
  • Gunner
  • Loader
  • Driver

Total: 4 Crew members

Armour

Armour type:

  • Rolled homogeneous armour (Hull, Turret roof, Hatch roof)
  • Cast homogeneous armour (Turret)
Armour Front Sides Rear Roof
Hull 140 mm (62°) Front glacis
160 mm (40°) Lower glacis
160 mm (34-77°) Driver's port
40 mm (44-87°) Top of Driver's port
160 mm (30-53°) Top
160 mm Middle
30 mm (61°) Bottom
100 mm (37°) Top
30 mm (80°) Middle
100 mm (31-39°) Bottom
30 mm
Turret 200-250 mm (2-89°) Turret front
200 mm (0-65°) , 170 + 250 mm (2-61°) Gun mantlet
200 mm (3-40°) 150 (62-72°) Top
170 mm (21-49°) Bottom
30 mm Front, Hatch roof, Ventilators
50 mm Front sides
170 mm Center

Notes:

  • Suspension wheels are 20 mm thick, torsion bars are 10 mm thick, and tracks are 30 mm thick.

Engine & mobility

Weight: 60.0 ton

Max Speed: 45 km/h
Stock

  • Engine Power: 968 hp @ 2100 rpm
  • Power-to-Weight Ratio: 16.13 hp/ton
  • Maximum Inclination: 40°

Upgraded

  • Engine Power: ___ hp @ 2100 rpm
  • Power-to-Weight Ratio: __.__ hp/ton
  • Maximum Inclination: __°
Weight: 60.0 ton

Max Speed: 43 km/h
Stock

  • Engine Power: 663 hp @ 2100 rpm
  • Power-to-Weight Ratio: 11.05 hp/ton
  • Maximum Inclination: 40°

Upgraded

  • Engine Power: 750 hp @ 2100 rpm
  • Power-to-Weight Ratio: __.__ hp/ton
  • Maximum Inclination: __°
Weight: 60.0 ton

Max Speed: 43 km/h
Stock

  • Engine Power: 663 hp @ 2100 rpm
  • Power-to-Weight Ratio: 11.05 hp/ton
  • Maximum Inclination: 40°

Upgraded

  • Engine Power: ___ hp @ 2100 rpm
  • Power-to-Weight Ratio: __.__ hp/ton
  • Maximum Inclination: __°

Modules and improvements

History of creation and combat usage

Development

During the development of the IS-3 in 1944 under General Nikolai Dukhov, a separate project was underway by a design team led by L.S. Troyanov to improve the IS-2 design. This separate project commenced under the designation Object 701. The project produced three proposed design. The Object 701-2 with a S-34 100 mm gun, 701-5 with a different armour configuration, and the 701-6 with the 122 mm D-25 gun. The 701-6 was accepted for further development, to which was modified with thicker armour, longer hull, and a more powerful engine. There was some implementation of German designs into the prototype; the engine has a cooling system that uses a pair of circular fans on the engine deck, a feature also seen on the Panther tank.[1]

Usage

Object 701 was eventually approved for production in 1947 as the IS-4. The production turned out 200 tanks (some sources say 250) before the production was halted. The reason being that the IS-4 was criticized for being inadequate in mobility despite its new engine.[1] While production ended, the remaining IS-4 still saw service in the Soviet Union. When the Korean War broke out in 1950 and the United States and its allies got involved, the IS-4s were all shipped to the Far East of the Soviet Union in anticipation of Soviet intervention in the Korean War. They were not committed despite pressure by the Chinese from fear of inciting another world war. Even so, the IS-4 stayed in the region ready for action. In the late 1950s, the IS-4 underwent a modernization program along the lines of the IS-3 with increased ammo stowage, new machine gun armaments, new gun optics, better engine, and better filtration system and this modernized variant was named the IS-4M.[1] The IS-4 stayed in service in the Soviet Union until the 1960s.

Legacy

The IS-4, as a relatively unsuccessful Soviet tank, faded to obscurity with little information on it past its development period. It was the heaviest of the Soviet heavy tanks that were slated for a production. The IS-4's design was further developed on in the IS tank family with the Object 703, with the design using an electrical transmission instead of a mechanical one. This vehicle, redesignated the IS-6, also proved to be problematic and was shelved.[1]

Ingame description

@var:description

Screenshots and fan art

Camouflages and skins for the IS-4 from live.warthunder.com

Historical Photos

2a6rw2o.jpg 2d2gkxv.jpg

Additional information (links)

References

  1. 1.0 1.1 1.2 1.3 Zaloga Steven. IS-2 Heavy Tank 1944-73 Great Britain: Osprey Publishing Ltd., 1994
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ussr_is_4m.png

Icon-country-sov.png IS-4M
Nation USSR
Type Heavy tank
Rank 5
Battle Rating
7.7
7.7
7.7

   Metric✓       Imperial   

   Metric       Imperial✓   

Characteristics
Weight
60,000 kg
132,277 lb
Number of Crew 4
Hull armour thickness
160/160/100/30 mm
6.30/6.30/3.94/1.18 inches
Statistics
Engine power (stock)
968 hp
663 hp
663 hp
Engine power (upgraded)
___ hp
750 hp
750 hp
HP/ton ratio (stock)
16.13
16.39
11.05
11.23
11.05
11.23
HP/ton ratio (Upgraded)
__.__
__.__
12.50
12.70
12.50
12.70
Max speed
45 km/h
28.1 mph
43 km/h
26.4 mph
43 km/h
26.4 mph
Main Weapon
1 x 122 mm D-25T Cannon
Ammo stowage 30 rounds
Vertical guidance -3°/19°
Secondary Weapon
1 x DShK Heavy machine gun
Ammo stowage 1,000 rounds
Mount Coaxial
1 x DShK Heavy machine gun
Ammo stowage 250 rounds
Mount Pintle mount
Vertical guidance -10°/60°
Economy
Required RP 210,000 RP
Vehicle cost 550,000 SL
Crew training cost 160,000 SL
Max repair cost*
3,240 SL
6,400 SL
7,410 SL
Free repair time (Stock)
5d 15h
12d
13d
Free repair time (Upgraded)
_d __h
_d __h
_d __h
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