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SU-100

2022-02-15T03:58:31Z

U29109706: changing the shown battle rating in the pros and cons from 6.3 --> 6.0, added access to BR-412D as a pro.

{{Specs-Card
|code=ussr_su_100_1945
|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
}}

== Description ==

The '''{{Specs|name}}''' is a rank {{Specs|rank}} Soviet tank destroyer {{Battle-rating}}. It was one of the first vehicles introduced in the opening of "Ground Forces" in Update 1.41. Featuring the [[D-10S (100 mm)|100 mm gun]] with the same design from the [[SU-85M]], the SU-100 can prove a menace to anyone on the other end of its gun.

The SU-100 is a classical casemate tank destroyer and as such has a fixed forward gun for its main armament, not too unlike the [[SU-85]][[SU-85M|(M)]] tank destroyers. This gives the SU-100 a preference towards a defensive playstyle than an offensive one. As such, it is best to play the SU-100 in a supporting role, firing at distant enemies and ambushing them rather than facing them head-on.

Though external difference is minimal, the gun performance is big enough for a whole rank.

== General info ==
=== Survivability and armour ===
{{Specs-Tank-Armour}}


The SU-100 does not look very different from the Rank III [[SU-85M]] tank destroyer, the only big external difference is the large 100 mm D-10S gun extending from the body, significantly bigger than the 85 mm D-5S gun, which makes it difficult to hide at times.

The armour on the SU-100 is the same 75 mm sloped frontal armour. The engine and weight are also the same. With all these similarities, those familiar with the SU-85 series will feel at home with the SU-100, with the exception that a majority of the enemies in the BR bracket can effortlessly knock out the SU-100 with even a glancing shot, so it is even more difficult to survive in a direct confrontation.

Attempts to angle and deflect shots of any tank of the same or higher BR as the SU-100 will likely be in vain, but should be tried anyway for a chance of not receiving a one-shot, as the crew is still placed in a straight line on the left side. At the very least it works against some Soviet tanks of the same BR in AB, as it still can bounce shots from itself or [[T-44]] on rare occasions or when their users are very poor shot.

There are also non-premium ATGM tanks in the BR range of the SU-100, which can annihilate it on direct hit. The best course of action is to either not interact with them at all or try to immediately turn left after firing at them and try to sacrifice the engine before the ATGM hits the main compartment. This will not really stop ATGM tanks with two launchers if you failed the shot, but at the very least they will be busy reloading after destroying the SU-100 in such case and, maybe, teammates will defeat it.

'''Armour type:'''

* Rolled homogeneous armour (Casemate hull)
* Cast homogeneous armour (Gun mantlet, Driver's hatch)

{| class="wikitable"
|-
! Armour !! Front !! Sides !! Rear !! Roof
|-
| Hull || 75 mm (50°) ''Front glacis'' 45 mm (59°) ''Lower glacis'' 70 mm (50°) ''Driver's hatch'' 75 mm (3-55°) ''Gun mantlet''|| 45 mm (19°) ''Front'' 45 mm (41°) ''Rear'' 45 mm ''Bottom'' || 45 mm (48°) ''Top'' 45 mm (47-48°) ''Bottom'' || 20 mm
|-
| Cupola || 45 mm || 45 mm || 45 mm || 20 mm
|-
|}
'''Notes:'''

* Suspension wheels and tracks are 20 mm thick.
* The commader's cupola extends out of the right side of the casemate, presenting a protrusion that could be penetrated from the front
* Driver's hatch maximum effective armour is 120 mm.

=== Mobility ===
{{Specs-Tank-Mobility}}


{{tankMobility|abMinHp=710|rbMinHp=442}}

=== Modifications and economy ===
{{Specs-Economy}}

== Armaments ==
{{Specs-Tank-Armaments}}
=== Main armament ===
{{Specs-Tank-Weapon|1}}

{{main|D-10S (100 mm)}}

The SU-100 boasts high firepower and long effective range due to its 100 mm armament.

The gun is able to penetrate armour similar to the 122 mm on the [[ISU-122]], but also mostly retains a faster reload rate of [[SU-85M]] with it being just 3 seconds longer. As such, the SU-100 can lay in wait hidden in an open field and confidently attack enemies up to 1,000 m away.

Do note that tanks with 88 or 85 mm gun will now reload faster than the SU-100, unless their loader has been knocked out, and they might be able to fire back twice. The implication is that, since the SU-100 does not receive any better armour over SU-85M, it is even more vulnerable to the same tanks that bullied it's predecessors before, unless it obliterates them immediately.

The stock 100 mm ammunition boasts penetration levels along the line of the 122 mm, but with much faster muzzle velocity. Upgraded ammunition places the SU-100 more in line with the [[ASU-85]] in terms of firepower.

Aside from that, everything else is the same as the SU-85M. Gun elevation and depression is the same as +20°/-3°.

{| class="wikitable" style="text-align:center" width="100%"
|-
! colspan="5" | [[D-10S (100 mm)|100 mm D-10S]] || colspan="5" | Turret rotation speed (°/s) || colspan="4" | Reloading rate (seconds)
|-
! Mode !! Capacity !! Vertical !! Horizontal !! Stabilizer
! Stock !! Upgraded !! Full !! Expert !! Aced
! Stock !! Full !! Expert !! Aced
|-
! ''Arcade''
| rowspan="2" | 33 || rowspan="2" | -3°/+20° || rowspan="2" | ±8° || rowspan="2" | N/A || 6.2 || 8.5 || 10.4 || 11.5 || 12.2 || rowspan="2" | 13.65 || rowspan="2" | 12.08 || rowspan="2" | 11.13 || rowspan="2" | 10.50
|-
! ''Realistic''
| 4.2 || 4.9 || 6.0 || 6.6 || 7.0
|-
|}

==== Ammunition ====
{| class="wikitable sortable" style="text-align:center" width="100%"
! colspan="8" | Penetration statistics
|-
! rowspan="2" data-sort-type="text" | Ammunition
! rowspan="2" | Type of warhead
! colspan="6" | Penetration @ 0° Angle of Attack (mm)
|-
! 10 m !! 100 m !! 500 m !! 1,000 m !! 1,500 m !! 2,000 m
|-
| BR-412 || APHE || 218 || 212 || 190 || 164 || 143 || 124
|-
| BR-412B || APHEBC || 218 || 215 || 201 || 184 || 169 || 155
|-
| BR-412D || APCBC || 239 || 236 || 220 || 202 || 186 || 170
|-
| OF-412 || HE || 19 || 19 || 19 || 19 || 19 || 19
|-
|}
{| class="wikitable sortable" style="text-align:center" width="100%"
! colspan="10" | Shell details
|-
! rowspan="2" data-sort-type="text" | Ammunition
! rowspan="2" | Type of warhead
! rowspan="2" | Velocity (m/s)
! rowspan="2" | Projectile Mass (kg)
! rowspan="2" | Fuse delay (m)
! rowspan="2" | Fuse sensitivity (mm)
! rowspan="2" | Explosive Mass (TNT equivalent) (g)
! colspan="3" | Ricochet
|-
! 0% !! 50% !! 100%
|-
| BR-412 || APHE || 895 || 15.9 || 1.2 || 19 || 100.1 || 47° || 60° || 65°
|-
| BR-412B || APHEBC || 895 || 15.9 || 1.2 || 19 || 100.1 || 48° || 63° || 71°
|-
| BR-412D || APCBC || 887 || 15.9 || 1.2 || 19 || 93.94 || 48° || 63° || 71°
|-
| OF-412 || HE || 900 || 15.6 || 0 || 0.1 || 1,460 || 79° || 80° || 81°
|-
|}
{| class="wikitable" style="text-align:center"
! colspan="7" | 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)
|-
| 3D3 || 880 || 15.6 || 20 || 5 || 25 || 272
|-
|}

==== [[Ammo racks]] ====
[[File:Ammoracks_{{PAGENAME}}.png|right|thumb|x250px|[[Ammo racks]] of the {{PAGENAME}}]]

{| class="wikitable" style="text-align:center"
|-
! Full ammo
! 1st rack empty
! 2nd rack empty
! 3rd rack empty
! 4th rack empty
! Visual discrepancy
|-
| '''33''' || 25 ''(+8)'' || 17 ''(+16)'' || 9 ''(+24)'' || 1 ''(+32)'' || No
|-
|}

== Usage in battles ==

The SU-100 can be effortlessly defeated by a majority of the enemies faced at the BR bracket. As such, it is most important that the SU-100 makes the first, damaging shot before the enemy could get a shot first. The SU-100 is a classical casemate tank destroyer and as such has a fixed forward gun for its main armament, not too unlike the [[SU-85]] or [[SU-85M]] tank destroyers. This gives the SU-100 a preference towards a defensive playstyle than an offensive one. As such, it is best to play the SU-100 in a supporting role, firing at distant enemies and ambushing them rather than facing them head-on. The SU-100 boasts high firepower and long effective range due to its 100 mm armament. The gun is able to penetrate armour similar to the 122 mm on the [[IS-2]], but also a faster reload rate while retaining suitable post-penetration damage to devastating enemy tanks. As such, the SU-100 can lay in wait hidden in an open field and confidently attack enemies up to 1,000 meters away.

* Panther [[Panther A|A]],[[Panther G|G]],[[Panther F|F]]: Though the Panther's 75 mm gun can penetrate the SU-100's front armour with little difficulty, the 100 mm gun can penetrate the Panther's front glacis plate at quite a distance (>500m). Thus, getting the first shot off will turn the battle situation towards the SU-100's advantage.
* Tiger [[Tiger II (P)|(P)]] and [[Tiger II (H)|(H)]]: The front glacis of the Tiger II is impervious to the 100 mm, but the turret cheeks are still a major weak point that the gun can easily penetrate. At closer range, the lower glacis is also a weak point on the front area. If the Tiger II decides to traverse its turret slightly away from towards the SU-100, the 100 mm also has enough power to penetrate through the Tiger II turret side rather easily.
* [[IS-2]] ([[IS-2 (1944)|1944]]): The IS-2 is easily disposable by a good firing on the front glacis, though the 1944 version requires careful aiming on the front glacis, thus it is better to aim at the lower glacis for an easier time at penetrating. The turret cheeks are also easy to penetrate like other heavy tanks.
* [[M4A3E2]]: when the Jumbo isn't angling, the SU-100 can penetrate its frontal hull and turret with ease. However when it's angling the hull, it is best to shoot the rather vertical turret for better chances of penetration. The explosives can knock out almost all its crew even when exploding inside the turret.

=== Pros and cons ===


'''Pros:'''

* The 100 mm D-10 gun from the T-54 series at 6.0
* Stock shells have high penetration and explosive filler
* Can easily penetrate and one-shot common heavily armoured tanks like the [[Panther tank (Family)|Panther]], [[Jagdpanther]] and [[M4A3E2 (76) W|M4A3E2]]. Can penetrate the [[Tiger II (P)|Tiger IIs]]' turret frontally.
* Great top speed and manoeuvrability (56 km/h)
* Decent ammo count
* Access to BR-412D, which has great angle performance.

'''Cons:'''

* Although the front armour is sloped and isn't overmatched, it received no upgrades and is overall too weak for its rank
* Can be easily taken out in one shot due to the cramped internals
* Bad gun depression of 3 degrees
* Reloads slower than tanks that it still has to face in down-tiers
* Long cannon make the tank hard to conceal and it is much taller than [[ASU-85]]

== History ==

===Development===
This tank destroyer takes its lineage from its predecessor [[SU-85]]. The SU-85's introduction with its 85 mm D-5 cannon made it a lethal weapon against German tanks, giving it much better firepower than the current T-34 with the 76.2 mm F-34 guns. However, the SU-85 became redundant when the T-34 began to upgrade into the [[T-34-85]], which contains the same 85 mm gun as the SU-85. No longer having the advantage in firepower, the SU-85 was discontinued, but the role of a self-propelled gun was still required to support the armoured forces.

It was decided to up-gun the SU-85 model with a much bigger cannon. Lev I. Gorlitsky, the chief designer of Soviet medium self-propelled guns, began the development of improving the SU-85. It was decided that the new cannon will be of 100 mm in calibre, and work started on developing the prototype in February 1944. In March, the prototype named "Object 138" was made for testing, mainly by trying many different 100 mm guns to see which would prove most effective. It was decided that the 100 mm D-10 gun produced by Fyodor F. Petrov's design bureau, which was an adapted S-34 naval gun, was to be used as the main armament of the self-propelled gun, now named the '''SU-100'''.

While the vehicle is essentially a SU-85 reworked to mount the larger 100 mm cannon, the SU-100 body has some major improvements compared to its predecessor. Armour on the front is increased from the regular 45 mm to 75 mm, the commander's workplace was enlarged into a small sponson on the right side of the hull with a commander's cupola, which increased his combat effectiveness. Two new ventilator units were also installed for increased ventilation of the gun's propellant gases. Production started in September 1944 and continued until some time in 1947 with a total of 2,335 units produced.

===Combat usage===
In its introduction in the last few months of World War II, the SU-100 proved to be a very successful tank destroyer. The 100 mm D-10 gun could penetrate 125 mm of armour at 2,000 meters away, against the Panther, it could take it out from 1,500 meters away easily. Most of the SU-100 in service saw action in Hungary in March 1945, most notably in the German offensive Operation Frühlingserwachen (Spring Awakening). Although never intended for infantry support, the SU-100 even saw action in the Battle of Berlin in the close-quarters combat of urban warfare as its 100 mm gun was very good against heavy fortifications, but the lack of any machine guns has the vehicle work in cohesion with infantry or aircraft.

After World War II, the Red Army retained the SU-100 for a few more years until retiring them to reserves in 1947, still existing to this day. The SU-100 was given out to Warsaw Pact allies such as Egypt, Angola, Cuba, China, and Czechoslovakia. The SU-100 saw service in many Cold-War conflicts such as the Korean War in 1950, Vietnam War in 1955, Suez Crisis in 1956, the Six-Day War in 1967 and the Yom Kippur War in 1973. Some were modified to adapt to the sandy environment of the Middle East, these were designated the ''SU-100M''. These exported SU-100s continue to see service up to today in some countries, but most replaced it by 1970s. One of the most recent usages of the SU-100 is in Yemen during the Yemen Civil War of 2015.

=== In-game description ===
In connection with the increased armour of new enemy heavy tanks, it became necessary to create a self-propelled gun more powerful than the SU-85. Mass production of a new SPG under the designation SU-100 began at UZTM in August 1944. The engine, transmission, undercarriage and many other key parts from the T-34-85 tank were used in its design. It was armed with a 100 mm D-10S cannon with a 56 calibre barrel length. This weapon perfectly combined a high rate of fire with good ballistic characteristics. Its armour-piercing shell could penetrate 160 mm thick armour from a distance of 1000 metres. The vehicle had a standard design, with the driving compartment in the front, the fighting compartment in the middle and the engine compartment in the rear. Above the commander's place, the cabin's roof contained a fixed command cupola with five observation slots for all-round visibility. The command cupola's hatch housed an MK-4 observation instrument and rotated on a bearing.

The SPG was manufactured between 1944 and 1947, and 2,495 SPGs of this type were produced during the Great Patriotic War.

The SU-100 was first deployed in battle in January 1945. The SPGs showed their worth and earned a reputation as a reliable and powerful combat vehicle.

The vehicle also inherited negative aspects from its base tank, such as its outdated suspension construction, its fuel tank positioning in the fighting compartment, and its unfavourable layout for an SPG. The SU-100's barrel length was even greater than that of the SU-85, making manoeuvring difficult on rough terrain and in urban areas.

After the war, the vehicle was modernised numerous times and remained in service in the Soviet Army for several decades. These SPGs were supplied to the USSR's allies and took part in a range of local post-war conflicts.

== Media ==


;Skins

* [https://live.warthunder.com/feed/camouflages/?vehicle=ussr_su_100_1945 Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]

;Videos
{{Youtube-gallery|V1p2PGVk5Kc|'''{{PAGENAME}} Tank Review''' - ''NUSensei''|NLlYHrgltYY|'''A Real Tank for gamescom 2014''' - ''War Thunder Official Channel''}}

== See also ==
''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''

* ''reference to the series of the vehicles;''
* ''links to approximate analogues of other nations and research trees.''

== External links ==
''Paste links to sources and external resources, such as:''

* ''topic on the official game forum;''
* ''other literature.''

{{USSR tank destroyers}}

ISU-152

2020-11-12T06:39:16Z

U29109706: Changed the cons front armour from 75 to 90mm

{{Specs-Card|code=ussr_isu_152}}

== Description ==

[[File:GarageImage_{{PAGENAME}}.jpg|420px|thumb|left]]
{{break}}
The '''{{Specs|name}}''' is a rank {{Specs|rank}} Russian tank destroyer {{Battle-rating}}. It was introduced during the Closed Beta Test for Ground Forces before [[Update 1.41]]. Wielding the same infamous 152 mm gun as on the [[SU-152]], the ISU-152 presents better armour, mobility, and firepower with the addition of the heavy-hitting HEAT round for the gun.

== General info ==
=== Survivability and armour ===

'''Armour type:'''

*Rolled homogeneous armour
*Cast homogeneous armour (Gun mantlet)

{| class="wikitable"
|-
! Armour !! Front !! Sides !! Rear !! Roof
|-
| Hull || 60 mm (75°) ''Front glacis'' 90 mm (31°) ''Lower glacis'' || 90 mm || 60 mm (50°) ''Top'' 60 mm (39°) ''Bottom'' || 30 mm
|-
| Superstructure || 90 mm (29°) ''Front glacis'' 65 mm (7-69°) ''Gun mantlet case'' 100 mm ''Gun mantlet'' (0-45°) || 75 mm (14-15°) || 60 mm (1°) || 30 mm
|-
|}
'''Notes:'''

* Suspension wheels are 20 mm thick while tracks are 30 mm thick.

=== Mobility ===


{{tankMobility|abMinHp= 739|rbMinHp= 460|}}

== Armaments ==
=== Main armament ===

{{main|ML-20S (152 mm)}}

{| class="wikitable" style="text-align:center"
|-
! colspan="6" | [[ML-20S (152 mm)|152 mm ML-20S]]
|-
! colspan="3" rowspan="1" style="width:5em" |Capacity
! rowspan="1" | Vertical guidance
! rowspan="1" | Horizontal guidance
! rowspan="1" | Stabilizer
|-
| colspan="3" | 20 || -3°/+20° || -3°/+7° || N/A
|-
! colspan="6" | Turret rotation speed (°/s)
|-
! style="width:4em" |Mode
! style="width:4em" |Stock
! style="width:4em" |Upgraded
! style="width:4em" |Prior + Full crew
! style="width:4em" |Prior + Expert qualif.
! style="width:4em" |Prior + Ace qualif.
|-
| ''Arcade'' ||7.0||9.8||11.8||13.1||13.9
|-
| ''Realistic'' ||4.8||5.6||6.8||7.5||8.0
|-
! colspan="4" | Reloading rate (seconds)
|-
! colspan="1" style="width:4em" |Stock
! colspan="1" style="width:4em" |Prior + Full crew
! colspan="1" style="width:4em" |Prior + Expert qualif.
! colspan="1" style="width:4em" |Prior + Ace qualif.
|-
| 27.7 ||24.5||22.6||21.3
|-
|}

===== Ammunition =====
{| class="wikitable sortable" style="text-align:center" width="100%"
! colspan="8" | Penetration statistics
|-
! rowspan="2" data-sort-type="text" | Ammunition
! rowspan="2" class="unsortable" | Type of warhead
! colspan="6" | '''Penetration''' '''''in mm''''' '''@ 90°'''
|-
! 10m
! 100m
! 500m
! 1000m
! 1500m
! 2000m
|-
| BR-540 || APHE ||170||169||161||152||144||136
|-
| OF-540 || HE ||65||65||64||64||63||63
|-
| BR-540B || APHEBC ||166||164||157||148||140||133
|-
| BP-540 || HEAT ||250||250||250||250||250||250
|-
|}
{| class="wikitable sortable" style="text-align:center" width="100%"
! colspan="11" | Shell details
|-
! rowspan="2" data-sort-type="text" | Ammunition
! rowspan="2" class="unsortable" | Type of warhead
! rowspan="2" |Velocity in m/s
! rowspan="2" |Projectile Mass in kg
! rowspan="2" | ''Fuse delay''
''in m:''
! rowspan="2" | ''Fuse sensitivity''
''in mm:''
! rowspan="2" | ''Explosive Mass in g (TNT equivalent):''
! rowspan="2" | ''Normalization At 30° from horizontal:''
! colspan="3" | ''Ricochet:''
|-
! 0%
! 50%
! 100%
|-
| BR-540 ||APHE || 600 || 49 || 1.2 || 15 || 816 || -1° || 47° || 60° || 65°
|-
| OF-540 || HE || 655 || 44 || 0.1 || 0.5 || 5,900 || +0° || 79° || 80° || 81°
|-
| BR-540B || APHEBC || 600 || 49 || 1.2 || 15 || 1,120 || +4° || 48° || 63° || 71°
|-
| BP-540 || HEAT || 680 || 48.8 || - || 0.1 || 5,910 || +0° || 62° || 69° || 73°
|-
|}

==== [[Ammo racks]] ====
[[File:Ammoracks_{{PAGENAME}}.png|right|thumb|x250px|[[Ammo racks]] of the {{PAGENAME}}]]
{| class="wikitable" style="text-align:center"
|-
! Full ammo
! Ammo type
! 1st rack empty
! 2nd rack empty
! 3rd rack empty
! 4th rack empty
! Visual discrepancy
|-
| '''20''' || ''Projectiles'' ''Propellants'' || 11 ''(+9)'' 11 ''(+9)'' || 1 ''(+19)'' 9 ''(+11)'' || ''N/A'' 7 ''(+13)'' || ''N/A'' 1 ''(+19)'' || No
|-
|}
'''Notes''':

* The {{PAGENAME}} uses two-piece ammunition, composed of projectiles (yellow) and propellant bags (orange). Both have separate racks.

=== Machine guns ===

{{main|DShK (12.7 mm)}}

{| class="wikitable" style="text-align:center" width="50%"
|-
! colspan="5" | [[DShK (12.7 mm)|12.7 mm DShK]]
|-
! Mount !! Capacity (Belt) !! Fire rate !! Vertical !! Horizontal
|-
| Pintle || 250 (50) || 600 || -5°/+85° || ±180°
|-
|}

== Usage in battles ==

The ISU-152 is a tank destroyer with a huge 152 mm cannon which can one-shot any target that it penetrates. In an uptier, the gun is equipped with a HEAT shell that has enough penetration to destroy even the most armoured heavy tanks. However, the gun comes with its drawbacks. Its reload time is long, shell velocity is low, and on top of that, shell drop must be accounted for when aiming. This makes aiming and leading at long ranges difficult--indeed, the ISU-152 is best at close and medium ranges.

The gun has a very small gun depression, which means that the ISU-152 is unsuited for hilly maps and for firing from behind ridgelines. Flat, urban terrain lets this vehicle use its gun to the greatest potential.

Of course, the ISU-152 is not a turreted vehicle, and this means that flankers such as the [[M18 Hellcat (Family)|M18 Hellcat]] are extremely dangerous. Worse, the ISU-152 is quite sluggish in the mobility department. Repositioning in order to face an enemy takes a considerable amount of time, which means that it's necessary to keep a careful eye out for flankers, and to plan escape routes in dangerous situations.

As for armour, the ISU-152's protection is average. Its roof armour can protect against aircraft machine guns and some 20 mm cannons, and its side armour protects well against SPAA guns. However, the frontal armour is easily penetrated by many of the guns at this tier. And, the tightly-packed arrangement of the crew inside the vehicle means that being one-shot is not a rare occurrence in this vehicle.

Provided you have the HEAT shell unlocked, the ISU-152 is a exceptional machine to use in a full uptier and even beyond, with up to 250mm of armour penetration. The HEAT shell on the ISU-152 is identical to the one on the [[Object 268]], a BR 7.3 tank destroyer, with the same armour penetration stats to boot. With the extra silver lions obtainable from the "Rank does not matter" achievement, the ISU-152 may actually be more effective in a uptier then at tier.

=== Modules ===
{| class="wikitable"
!Tier
! colspan="2" |Mobility
!Protection
! colspan="2" |Firepower
|-
|I
|Tracks
|
|Parts
|Horizontal Drive
|
|-
|II
|Suspension
|Brake System
|FPE
|BR-540B
|Adjustment of Fire
|-
|III
|Filters
|
|Crew Replenishment
|BP-540
|Elevation Mechanism
|-
|IV
|Transmission
|Engine
|
|
|
|}

=== Pros and cons ===

'''Pros:'''

* Deadly cannon provides superior one-shot capacity with any target upon penetration

* Powerful HEAT penetrates up to 250mm which is very effective in a full uptier. For example the early Centurions, Ferdinand, Tiger II H can all get penetrated with ease.
* The huge gun mantlet and its complex armor layout is capable of deflecting quite some shells sometimes.
* 30mm roof armor resists popular aircraft weapons well, like the 12.7mm M2 with ground target belt and the MG 151.
* All-round protection provides good resistance against flanking SPAAs. The M19 / M42 are very common flankers.
* Equipped with a .50 calibre machine gun, good for dealing with lighter vehicles like SPAAs, or some light tank destroyers like the [[M18 GMC|M18 Hellcat]]

'''Cons:'''

* Long reload of more than 20 seconds and the rather curved trajectory demands very precise aiming, which isn't beginner friendly.
* Front armour is only 90mm and is not well angled. Gets penetrated easily by common guns at the BR, like the 76mm M1, 17 pdr, 75mm and 88mm.
* Closely packed crew all easily get killed when an explosive shell penetrates.
* Very inadequate gun depression of -3° combined with the sluggish mobility makes it only capable of fighting in urban (flat) areas, but never the hills.
* Turretless layout and the sluggish mobility makes it very vulnerable to surprise flankers, for example the infamous M18, T20, T25 and Puma.
* Gun breech often gets damaged while under enemy fire.
* .50 calibre machine gun only has 250 rounds

== History ==

===Development===
Development of the '''ISU-152''' already started alongside the [[SU-152]], its predecessor. The SU-152 was based off the KV-1S tank, which itself is a lighter version of the [[KV-1 (ZiS-5)|KV-1]] heavy tank. The vehicle, while highly praised in its performance, saw a need for modernization with the KV-1's phasing out of the Soviet's inventory and being replaced with the new [[IS-1|IS]] heavy tanks. The modernization process began on May 25, 1943, with the goal of using the IS tank as the basis of the vehicle and also increasing armour protection alongside other improvements. Development began in July under Joseph Yakovlevich Kotin, a chief designer of Soviet heavy tanks, who worked alongside G. N. Moskvin as the main designer. The designing of the improved vehicle went on for a month before the first variant was ready, designated the ''IS-152''. This was tested in September 1943, which revealed defects and deficiencies with the design, so it was redone into a second variant called ''Object 241'' in October 1943. Trials began on ''Object 241'', which was successful through the factory and state trials and adopted on November 6, 1943, as the '''ISU-152'''. Production began in December at the Chelyabinsk Kirovsk Plant, producing 3,242 units from then all the way until 1947, with 1,885 units made by the end of World War II.

===Design===
The ISU-152 was the successor to the SU-152, retaining the same 152 mm ML-20S howitzer needed to destroy enemy fortifications in offensive operations. The vehicle was run on a torsion-bar suspension system from the [[IS-2|IS]] tank chassis. The crew consists of four or five men in the vehicle, the optional crew member being a loader. The crew had external views through periscopes and two gun sights, a panoramic and a telescopic one. Crew communication was possible with an intercom system and a 10R or 10RK radio was available to communicate between vehicles. The crew had access to two PPSh submachine guns and grenades in the tank to defend themselves against infantry.

A drawback to the vehicle's design was the gun ammunition and internal storage. The large ammunition pieces were limited to about 20 rounds in the vehicle, and each round was extremely heavy and large that reloading the tank can take up to 40 minutes and lots of strength. Rate of fire was also reduced by the ammunition's heavyweight.

===Combat usage===
The ISU-152 was issued in a similar manner to the SU-152 in independent Heavy Self-propelled Artillery Regiments. Each regiment, of which 53 were formed from May 1943 to 1945, had 21 guns divided into four batteries of five vehicles and a commander vehicle. These regiments were supported by other military units to be flexible against threats. In December 1944, the Guards Heavy Self-propelled Artillery Brigades were formed to provide heavy fire support. These brigades had up to 65 vehicles, which would consist of ISU-152s or [[ISU-122]]s.

Like its predecessor the [[SU-152]], the ISU-152 also served as a multi-role vehicle as a heavy assault gun, tank destroyer, and self-propelled artillery. As an assault gun, the vehicle was valuable during the Soviet's offensive operations assaulting fortified cities held by the Axis forces. The 152 mm gun was very successful in demolishing fortifications and strong points. The greater armour protection on the ISU-152 compared to the SU-152 (90 mm vs. 65 mm) made the vehicle very durable against German anti-tank weapons, even forcing the [[Tiger H1|Tiger]] to come within close range to penetrate the vehicle. Usual tactics of the ISU-152s in urban combat was to act in one or two vehicle groups with infantry to deter infantry anti-tank weaponry like the Panzerfaust. As a tank destroyer, the ISU-152 worked its unintended role well enough that it inherited the nickname ''Zveroboy'' ("Beast Killer") from the SU-152s. The ISU-152 was very capable of destroying many of the more armoured German tanks like the [[Panther G|Panthers]], [[Tiger E|Tiger Is]], and [[Tiger II (H)|Tiger IIs]]. Though not as rapid-firing or as accurate as dedicated anti-tank guns, the rounds of the 152 mm howitzer could blow the turret off a Tiger tank, and a direct hit would definitely cause extensive internal damages to the tank's internal mechanisms or kill the crew due to spalling of the hull due to the explosive force. The tank destroyer role was phased out with the introduction of dedicated vehicles like the [[SU-100]]. As a self-propelled artillery piece, the ISU-152 is able to successfully fire in indirect bombardments against enemy targets up to 7,000 meters away. Though it was not really a specialized vehicle for the role, it was better than typical towed artillery pieces due to being able to move and being an enclosed vehicle to protect the crew. The ISU-152 served in all these roles in all of the Soviet offensive operations into German territory all the way until the Battle of Berlin.

Many ISU-152s were exported by the Soviets after World War II to assist its allies and other Warsaw Pact members. Countries that had access to the ISU-152 in their military were Finland, Poland, China, Czechoslovakia, North Korea, Egypt, Iraq, Yugoslavia, and Romania. All of which used the ISU-152s up until the 1970s at the latest.

=== In-game description ===
"In the autumn of 1943, the KV-1S heavy tank was removed from mass production along with the successful SU-152 SPG based on the KV tanks. However, the fact that the KV and IS chassis were similar meant that a new SPG could be built based on the new heavy tank.

The SPG's layout was standard. A cabin made from rolled armour plates was installed in the front of the vehicle, combining the driving compartment and fighting compartment into one section. The engine compartment was placed in the rear of the vehicle. Because of the smaller width of the IS in comparison to the KV, the side plates' vertical slope was decreased from 25° to 15°, and its rear plate's slope removed altogether. At the same time, the cabin's frontal armour thickness was increased to 90 mm and its side armour to 75 mm. The gun mantlet was 60 mm thick, subsequently increasing to 100 mm. The vehicle was armed with a 152.4 mm ML-20 Mod. 1937/43 gun-howitzer with a 28 calibre barrel length and an ammunition capacity of 21 shells. After the war, the SPG's ammunition capacity was increased to 30 shots during modernisation. Starting from October 1944, an anti-tank turret equipped with a 12.7 mm DShK machine gun was attached on a traversing base on the commander's hatch.
From November 1943 until the end of mass production in 1946, 3,242 of them were manufactured.

The ISU-152's main role in battle was providing fire support to advancing tanks and infantry. These heavy SPGs were sometimes used in artillery preparation strikes. They could fire both directly and from cover. The SPGs were indispensable in urban battles. ISU-152s were used to suppress the Hungarian Uprising of 1956.
ISU-152 SPGs served in the Polish Army. After the war, Czechoslovakia received these vehicles. At the beginning of the 1960s, an Egyptian army regiment had an ISU-152 in service.

Among the vehicle's drawbacks, poor fighting compartment ventilation was noted. The shells' high weight demanded good physical endurance from the loader, and even then, the SPG's rate of fire was unsatisfactory. Its small on-board ammunition capacity and internally placed fuel tanks were also seen as serious flaws."

== Media ==

Skin and Camouflages for the [https://live.warthunder.com/feed/camouflages/?vehicleCountry=ussr&vehicleType=tank&vehicleClass=tank_destroyer&vehicle=ussr_isu_152 ISU-152] in Warthunder Live.

== See also ==


;Vehicles equipped with the same chassis

* [[KV-1S]]
* [[KV-85]]

;Vehicles equipped with the same gun

* [[SU-152]]
* [[ISU-152 (China)]]

;Other vehicles of similar configuration and role

* [[ISU-122]] / [[ISU-122 (China)]]
* [[ISU-122S]]

== External links ==


* [https://warthunder.com/en/news/2795/current/ [Vehicle Profile<nowiki>]</nowiki> ISU-152 «Zveroboy»]
* [https://en.wikipedia.org/wiki/ISU-152 [Wikipedia<nowiki>]</nowiki> ISU-152]

{{USSR tank destroyers}}