Difference between revisions of "SU-122P"

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{{Specs-Card|code=ussr_su_122P}}
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{{Specs-Card
 +
|code=ussr_su_122P
 +
|images={{Specs-Card-Image|GarageImage_{{PAGENAME}}.jpg}}
 +
}}
  
 
== Description ==
 
== Description ==
−
<!--In the description, the first part should be about the history of the creation and combat usage of the vehicle, as well as its key features. In the second part, tell the reader about the ground vehicle in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.-->
+
<!-- ''In the description, the first part should be about the history of the creation and combat usage of the vehicle, as well as its key features. In the second part, tell the reader about the ground vehicle in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.'' -->
−
The '''{{Specs|name}}''' is a rank {{Specs|rank}} Soviet tank destroyer {{Battle-rating}}.
+
The '''{{Specs|name}}''' is a premium rank {{Specs|rank}} Soviet tank destroyer {{Battle-rating}}. It was introduced in [[Update 1.41]].
  
 
== General info ==
 
== General info ==
 
=== Survivability and armour ===
 
=== Survivability and armour ===
−
''Describe armour protection. Note the most well protected and key weak areas. Appreciate the layout of modules as well as the number and location of crew members. Is the level of armour protection sufficient, is the placement of modules helpful for survival in combat?''
+
{{Specs-Tank-Armour}}
 +
<!-- ''Describe armour protection. Note the most well protected and key weak areas. Appreciate the layout of modules as well as the number and location of crew members. Is the level of armour protection sufficient, is the placement of modules helpful for survival in combat? If necessary use a visual template to indicate the most secure and weak zones of the armour.'' -->
  
−
''If necessary use a visual template to indicate the most secure and weak zones of the armour.''
+
The armour and survivability of the SU-122P is poor. At its BR, the 75 mm sloped upper front plate is very much useless as most opponents you face have more than 150 mm of penetration which is more than enough to go through your front. You will also more frequently see tanks firing HEAT shells (eg. [[ST-A1]], [[T114]]) who can just ignore your armour. The side armour is non existent. The only vehicles that cannot frontally penetrate you are SPAA (eg. [[M42 (Family)|M42]], [[Kugelblitz]]) and lower tier tanks. These vehicles are however quite rare, and often the foes will not struggle to penetrate you.
 +
 
 +
Post-penetration survivability is bad, since the interior of the SU-122P is cramped and the crew members are closely sat. Late-war/Cold War heavy tanks/tank destroyers (eg. [[T30]]) usually fire explosive-packed large-calibre APHE which can always one-shot you easily. However enemies with HEAT shells might take a few more shots to finish you as the damage of HEAT are lower.
 +
 
 +
{| class="wikitable"
 +
|-
 +
! Armour !! Front (Slope angle) !! Sides !! Rear !! Roof
 +
|-
 +
| Hull || 75 mm (52°) ''Front glacis'' <br> 45 mm (60°) ''Lower glacis'' || 45 mm ''Bottom'' || 45 mm (48°) || 20 mm <br> 20 + 10 mm ''Engine vents''
 +
|-
 +
| Superstructure || 75 mm (52°) ''Front glacis'' <br> 70 mm (52°) ''Driver's hatch'' <br> 75 + 100 mm (spherical) ''Gun mantlet'' || 45 mm (18-41°) ''Top'' || 45 mm || 20 mm
 +
|-
 +
| Cupola || colspan="3" | 45 mm || 20 mm
 +
|-
 +
|}
 +
 
 +
'''Notes:'''
 +
* Suspension wheels and tracks are 20 mm thick.
  
 
=== Mobility ===
 
=== Mobility ===
 +
{{Specs-Tank-Mobility}}
 
<!-- ''Write about the mobility of the ground vehicle. Estimate the specific power and manoeuvrability, as well as the maximum speed forwards and backwards.'' -->
 
<!-- ''Write about the mobility of the ground vehicle. Estimate the specific power and manoeuvrability, as well as the maximum speed forwards and backwards.'' -->
  
−
{{tankMobility|abMinHp= 710|rbMinHp= 442|<!--AoAweight=(optional) -->}}
+
{{tankMobility|abMinHp=710|rbMinHp=442}}
 +
 
 +
The mobility of the SU-122P is on par with average medium tanks/tank destroyers at similar BR (eg. [[T-44]], [[T25]]). While the top speed is 50 km/h, the average speed on common terrains (eg. grassland, dirt) is around ~30 km/h, which is usually enough to keep up with advancing teammates. The acceleration on soft surface or on a hill might feel sluggish, though. Hull traverse rate is adequate on all types of terrain, but a slight forward jerk might be required if the player wants to turn the hull quicker. The reverse speed is very slow at only -8 km/h while other late-war/Cold War-era vehicles are much faster. All in all, the SU-122P is not the fastest nor the most agile vehicle, but it will get to the places it needs to go in time.
 +
 
 +
=== Modifications and economy ===
 +
{{Specs-Economy}}
  
 
== Armaments ==
 
== Armaments ==
 +
{{Specs-Tank-Armaments}}
 
=== Main armament ===
 
=== Main armament ===
−
''Give the reader information about the characteristics of the main gun. Assess its effectiveness in a battle based on the reloading speed, ballistics and the power of shells. Do not forget about the flexibility of the fire, that is how quickly the cannon can be aimed at the target, open fire on it and aim at another enemy. Add a link to the main article on the gun: <code><nowiki>{{main|Name of the weapon}}</nowiki></code>. Describe in general terms the ammunition available for the main gun. Give advice on how to use them and how to fill the ammunition storage.''
+
{{Specs-Tank-Weapon|1}}
 +
<!-- ''Give the reader information about the characteristics of the main gun. Assess its effectiveness in a battle based on the reloading speed, ballistics and the power of shells. Do not forget about the flexibility of the fire, that is how quickly the cannon can be aimed at the target, open fire on it and aim at another enemy. Add a link to the main article on the gun: <code><nowiki>{{main|Name of the weapon}}</nowiki></code>. Describe in general terms the ammunition available for the main gun. Give advice on how to use them and how to fill the ammunition storage.'' -->
 +
{{main|D-25S (122 mm)}}
 +
 
 +
The SU-122P is equipped with a classic 122 mm D-25S cannon that is very capable even against Cold War vehicles. At this rank, the player should feel comfortable with the long reload of such gun and should master its ballistics and shell velocity. Plus the reload of ~18 seconds is much shorter than earlier tanks with 122 mm guns. If every shell counts, the 122 mm cannon is a very deadly terminator. The recommended ammo is of course the BR-471B and BR-471D. The former is a perfect option against late-WW2 vehicles such as [[Panther II]], [[M26 (Family)|M26]], etc, while the latter is more for super-heavy/Cold War tanks like the [[Tortoise]], [[T30]], etc. These shells all have great post-penetration damage and thus can generally one-shot most opponents.
 +
 
 +
This fantastic firepower is somewhat limited by the gun's aiming speed and traverse angles. The horizontal aiming speed of around 6 degree/s is somewhat enough for medium range engagements but will feel slow in close range battle against fast tanks like the [[M41 (Family)|M41]] and [[AUBL/74]]. The vertical targeting speed is much slower, and the gun depression of only -2 degrees makes it one of the worst vehicle in game at fighting in sloped terrains. A tiny hill will lift the nozzle up from the target. Finally, the gunsight zoom remains the same 3.5x which is just enough for medium range combat.
 +
 
 +
Note that since the gun is mounted towards the right side of the SU-122P, so when you aim and shoot to the left the tank will turn slightly to the right due to the huge recoil.
 +
 
 +
{| class="wikitable" style="text-align:center" width="100%"
 +
|-
 +
! colspan="5" | [[D-25S (122 mm)|122 mm D-25S]] || 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" | 28 || rowspan="2" | -2°/+20° || rowspan="2" | ±7° || rowspan="2" | N/A || 6.16 || 8.53 || 10.36 || 11.46 || 12.19 || rowspan="2" | 21.71 || rowspan="2" | 19.21 || rowspan="2" | 17.70 || rowspan="2" | 16.70
 +
|-
 +
! ''Realistic''
 +
| 4.17 || 4.90 || 5.95 || 6.58 || 7.00
 +
|-
 +
|}
 +
 
 +
==== Ammunition ====
 +
{{:D-25S (122 mm)/Ammunition|BR-471, BR-471B, BR-471D, OF-471}}
  
−
=== Additional armament ===
+
==== [[Ammo racks]] ====
−
''Some tanks are armed with several guns in one or more turrets. Evaluate the additional weaponry and give advice on its use. Describe the ammunition available for additional weaponry. Give advice on about how to use them and how to fill the ammunition storage. If there is no additional weaponry remove this subsection.''
+
[[File:Ammoracks_{{PAGENAME}}.png|right|thumb|x250px|[[Ammo racks]] of the {{PAGENAME}}]]
 +
<!-- '''Last updated: 1.101.1.16''' -->
 +
{| class="wikitable" style="text-align:center"
 +
|-
 +
! Full<br>ammo
 +
! Ammo<br>part
 +
! 1st<br>rack empty
 +
! 2nd<br>rack empty
 +
! 3rd<br>rack empty
 +
! 4th<br>rack empty
 +
! Visual<br>discrepancy
 +
|-
 +
| '''28''' || ''Projectiles''<br>''Propellants'' || 22&nbsp;''(+6)''<br>19&nbsp;''(+9)'' || 12&nbsp;''(+16)''<br>14&nbsp;''(+14)'' || 11&nbsp;''(+17)''<br>4&nbsp;''(+24)'' || 1&nbsp;''(+27)''<br> 1&nbsp;''(+27)'' || No
 +
|-
 +
|}
 +
'''Notes''':
  
−
=== Machine guns ===
+
* The {{PAGENAME}} uses two-piece ammunition, composed of propellant bags (orange) and projectiles (yellow). Both have separate racks.
−
''Offensive and anti-aircraft machine guns not only allow you to fight some aircraft but also are effective against lightly armoured vehicles. Evaluate machine guns and give recommendations on its use.''
+
* Projectiles and propellant bags are modeled individually and disappear after having been shot or loaded.
  
 
== Usage in battles ==
 
== Usage in battles ==
−
''Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but instead give the reader food for thought. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).''
+
<!--Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but instead give the reader food for thought. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).-->
 +
[[File:Wsp volumetric shell diagram.png|thumb|Differences between non-volumetric shells and volumetric shells hitting a Tiger I]]
 +
An important note when engaging tanks, especially Tiger I's, is that, with the implementation of volumetric shells, you can no longer expect your shells to pierce through small openings or right past an obstacle. The large 122 mm calibre of your shells will result in it catching on an armour plate's edge very often, losing all of its penetration. For example, a Tiger I has some edges that can absorb your shell unexpectedly, despite having flat armour. Thus you must always make sure that where you are aiming at is absolutely free of obstruction, or it may result in a non-penetration or a ricochet. This can be seen in the diagram to the right.
 +
 
 +
==== Specific Enemies Worth Noting ====
 +
 
 +
* [[T28]] - You can only penetrate the cupolas on top of the tank. If they're hidden or you are unsure about the shot, you can try hitting the cannon barrel and running away.
 +
* [[T34]] / [[T29]] - Turret cheeks can work, although it's best to go for the LFP because the ammo storage is very low in the tank. If you don't see the LFP, try going just below the turret ring, where the driver sits.
 +
* [[Tiger II (H)]] / [[Panther II]] - You can easily penetrate the turret cheeks with BR-471B.
 +
* [[Ferdinand]] - Go for the angled armour at the sides of the lower front plate (below the casemate, but above the lowest plates), this will disable Ferdinand's engine and/or driver, so you can flank and finish it off.
 +
* [[Panther tank (Family)]], versions A, D, F and G - You can penetrate the UFP
 +
* [[Tortoise]] - Shoot to the right of the gun of the Tortoise, when you see it head-on if shoot on the left plate there is a chance of a one-shot
 +
* [[Ho-Ri Production]] - You cannot reliably penetrate or damage this tank frontally. You can try disabling the cannon barrel and then flanking is your best option (or running).
  
 
=== Pros and cons ===
 
=== Pros and cons ===
−
<!--Summarise and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in a bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - use substitutions with softer forms such as "inadequate" and "effective".-->
+
<!-- ''Summarise and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in a bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - use substitutions with softer forms such as "inadequate" and "effective".'' -->
  
 
'''Pros:'''
 
'''Pros:'''
  
−
* One of the fastest reloading Russian 122 mm cannon
+
* One of the fastest reloading Soviet vehicles equipped with a 122 mm cannon
−
* The D-25S cannon is more than enough to completely destroy almost anything its shells connect with
+
* The D-25S cannon is more than enough to completely destroy almost anything its shells penetrate
 
* Quicker and more agile than the ISU-122
 
* Quicker and more agile than the ISU-122
 
* Smaller target than the ISU-122
 
* Smaller target than the ISU-122
Line 41: Line 123:
 
'''Cons:'''
 
'''Cons:'''
  
−
* Very poor gun depression of -2°
+
* Very poor gun depression
−
* Obsolete armor thickness, can easily be penetrated
+
* Limited gun traverse
−
* Costly to acquire (6,090 GE)
+
* Obsolete armour thickness, can easily be penetrated
 
* Reload time is still more than twice as long as its usual opposition
 
* Reload time is still more than twice as long as its usual opposition
  
 
== History ==
 
== History ==
−
''Describe the history of the creation and combat usage of the ground vehicle in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/ History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></nowiki></code>, as well as adding them at the end of the article. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under <code><nowiki>=== In-game description ===</nowiki></code>, also if applicable).''
+
<!-- ''Describe the history of the creation and combat usage of the vehicle in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under <code><nowiki>=== In-game description ===</nowiki></code>, also if applicable).'' -->
  
−
=== In-game description ===
+
There had been delays in the production of the SU-100 in autumn 1944, and so a new design was offered in the meantime. Uralmash's Design Bureau offered a tank destroyer on the same SU-100 hull, but with a 122 mm D-25S anti-tank gun. The 122 mm gun could be fitted without modification due to the commonality of the gun mounts.
 +
 
 +
Trials of the new tank destroyer, called the SU-122P, began in October 1944. Afterwards, it was sent to Government trials, passing all of them. It was recommended for service, but it never entered production, partially because of the long reload time of the 122 mm gun.
 +
 
 +
{{break}}
 +
{{Navigation-Start|{{Annotation|Archive of the in-game description|An archive of the historical description of the vehicle that was presented in-game prior to Update 1.55 'Royal Armour'}}}}
 +
{{Navigation-First-Simple-Line}}
 
A new SPG, designated SU-122P, was designed in the spring of 1944. Its designers attempted to fit the previously developed SU-100 SPG with a powerful 122 mm D-25S cannon with the aim of increasing the SPG's firepower. Outwardly, this SPG differed from the SU-100 in that its barrel was longer and had a muzzle brake.
 
A new SPG, designated SU-122P, was designed in the spring of 1944. Its designers attempted to fit the previously developed SU-100 SPG with a powerful 122 mm D-25S cannon with the aim of increasing the SPG's firepower. Outwardly, this SPG differed from the SU-100 in that its barrel was longer and had a muzzle brake.
  
−
In September 1944, the SU-122P SPG underwent factory testing, which it passed successfully. In spite of this, the order to put it into mass production did not follow. There were several reasons for this decision. First of all, the 122 mm D-25S cannon's penetration was lower than that of the D-10S by 4-5 mm, and its ammunition capacity was reduced to 26.  
+
In September 1944, the SU-122P SPG underwent factory testing, which it passed successfully. In spite of this, the order to put it into mass production did not follow. There were several reasons for this decision. First of all, the 122 mm D-25S cannon's penetration was lower than that of the D-10S by 4-5 mm, and its ammunition capacity was reduced to 26.
  
 
Due to its separate loading, its rate of fire was reduced to 3-4 shots per minute, and the weapon's recoil was higher than that of the SU-100's, which negatively affected the undercarriage's durability. The previous issues of inadequate space in the fighting compartment had remained unsolved. In addition, SPGs with a similar cannon had already been designed based on the IS-2, which had a more suitable chassis, hull and cabin for heavy artillery weapons.
 
Due to its separate loading, its rate of fire was reduced to 3-4 shots per minute, and the weapon's recoil was higher than that of the SU-100's, which negatively affected the undercarriage's durability. The previous issues of inadequate space in the fighting compartment had remained unsolved. In addition, SPGs with a similar cannon had already been designed based on the IS-2, which had a more suitable chassis, hull and cabin for heavy artillery weapons.
  
 
Only 1 experimental SU-122P SPG was produced.
 
Only 1 experimental SU-122P SPG was produced.
 +
{{Navigation-End}}
  
 
== Media ==
 
== Media ==
−
''Excellent additions to the article would be video guides, screenshots from the game, and photos.''
+
<!-- ''Excellent additions to the article would be video guides, screenshots from the game, and photos.'' -->
 +
 
 +
;Skins
 +
* [https://live.warthunder.com/feed/camouflages/?vehicle=ussr_su_122P Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]
  
 
== See also ==
 
== See also ==
−
''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
+
<!-- ''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.'' -->
  
−
* ''reference to the series of the vehicles;''
+
;Vehicles equipped with the same chassis
−
* ''links to approximate analogues of other nations and research trees.''
+
* [[SU-122]]
 +
* [[SU-85]]
 +
* [[SU-85M]]
 +
* [[SU-100]]
  
 
== External links ==
 
== External links ==
 
''Paste links to sources and external resources, such as:''
 
''Paste links to sources and external resources, such as:''
−
 
 
* ''topic on the official game forum;''
 
* ''topic on the official game forum;''
−
* ''encyclopedia page on the tank;''
 
 
* ''other literature.''
 
* ''other literature.''
  
 
{{USSR tank destroyers}}
 
{{USSR tank destroyers}}
 
{{USSR premium ground vehicles}}
 
{{USSR premium ground vehicles}}

Latest revision as of 19:35, 28 January 2023

Rank 7 USA
F-5C Pack
SU-122P
ussr_su_122p.png
GarageImage SU-122P.jpg
SU-122P
USSR flag.png USSR
IV Rank
Battle rating:
AB RB SB
5.7 5.7 5.7
Class:
PREMIUM
Purchase:4 880 Specs-Card-Eagle.png
Show in game

Description

The SU-122P is a premium rank IV Soviet tank destroyer with a battle rating of 5.7 (AB/RB/SB). It was introduced in Update 1.41.

General info

Survivability and armour

Armourfront / side / back
Hull75 / 45 / 45
Turret75 / 45 / 45
Crew4 people
Visibility77 %

The armour and survivability of the SU-122P is poor. At its BR, the 75 mm sloped upper front plate is very much useless as most opponents you face have more than 150 mm of penetration which is more than enough to go through your front. You will also more frequently see tanks firing HEAT shells (eg. ST-A1, T114) who can just ignore your armour. The side armour is non existent. The only vehicles that cannot frontally penetrate you are SPAA (eg. M42, Kugelblitz) and lower tier tanks. These vehicles are however quite rare, and often the foes will not struggle to penetrate you.

Post-penetration survivability is bad, since the interior of the SU-122P is cramped and the crew members are closely sat. Late-war/Cold War heavy tanks/tank destroyers (eg. T30) usually fire explosive-packed large-calibre APHE which can always one-shot you easily. However enemies with HEAT shells might take a few more shots to finish you as the damage of HEAT are lower.

Armour Front (Slope angle) Sides Rear Roof
Hull 75 mm (52°) Front glacis
45 mm (60°) Lower glacis 		45 mm Bottom 45 mm (48°) 20 mm
20 + 10 mm Engine vents
Superstructure 75 mm (52°) Front glacis
70 mm (52°) Driver's hatch
75 + 100 mm (spherical) Gun mantlet 		45 mm (18-41°) Top 45 mm 20 mm
Cupola 45 mm 20 mm

Notes:

  • Suspension wheels and tracks are 20 mm thick.

Mobility

Speedforward / back
AB55 / 9 km/h
RB and SB50 / 8 km/h
Number of gears5 forward
1 back
Weight31.6 t
Engine power
AB992 hp
RB and SB520 hp
Power-to-weight ratio
AB31.4 hp/t
RB and SB16.5 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 55 9 31.6 710 992 22.47 31.39
Realistic 50 8 442 520 13.99 16.46

The mobility of the SU-122P is on par with average medium tanks/tank destroyers at similar BR (eg. T-44, T25). While the top speed is 50 km/h, the average speed on common terrains (eg. grassland, dirt) is around ~30 km/h, which is usually enough to keep up with advancing teammates. The acceleration on soft surface or on a hill might feel sluggish, though. Hull traverse rate is adequate on all types of terrain, but a slight forward jerk might be required if the player wants to turn the hull quicker. The reverse speed is very slow at only -8 km/h while other late-war/Cold War-era vehicles are much faster. All in all, the SU-122P is not the fastest nor the most agile vehicle, but it will get to the places it needs to go in time.

Modifications and economy

Repair cost
AB2 213 Sl icon.png
RB2 458 Sl icon.png
SB3 397 Sl icon.png
Crew training10 000 Sl icon.png
Experts320 000 Sl icon.png
Aces800 Ge icon.png
Research Aces1 050 000 Rp icon.png
Reward for battleAB / RB / SB
Talisman.png 2 × 120 / 190 / 250 % Sl icon.png
Talisman.png 2 × 172 / 172 / 172 % Rp icon.png
Modifications
Mobility Protection Firepower
Mods new tank traks.png
Tracks
Mods new tank suspension.png
Suspension
Mods new tank break.png
Brake System
Mods new tank filter.png
Filters
Mods new tank transmission.png
Transmission
Mods new tank engine.png
Engine
Mods tank tool kit.png
Improved Parts
Mods extinguisher.png
Improved FPE
Mods tank reinforcement ussr.png
Crew Replenishment
Mods new tank horizontal aiming.png
Horizontal Drive
Mods tank cannon.png
Adjustment of Fire
Mods tank ammo.png
122mm_APHE_ammo_pack
Mods new tank vertical aiming.png
Elevation Mechanism
Mods tank ammo.png
122mm_APCBC_ammo_pack

Armaments

Main armament

122 mm D-25S cannon
Ammunition28 rounds
Reloadbasic crew → aces
21.7 → 16.7 s
Vertical guidance-2° / 20°
Horizontal guidance-7° / 7°
Main article: D-25S (122 mm)

The SU-122P is equipped with a classic 122 mm D-25S cannon that is very capable even against Cold War vehicles. At this rank, the player should feel comfortable with the long reload of such gun and should master its ballistics and shell velocity. Plus the reload of ~18 seconds is much shorter than earlier tanks with 122 mm guns. If every shell counts, the 122 mm cannon is a very deadly terminator. The recommended ammo is of course the BR-471B and BR-471D. The former is a perfect option against late-WW2 vehicles such as Panther II, M26, etc, while the latter is more for super-heavy/Cold War tanks like the Tortoise, T30, etc. These shells all have great post-penetration damage and thus can generally one-shot most opponents.

This fantastic firepower is somewhat limited by the gun's aiming speed and traverse angles. The horizontal aiming speed of around 6 degree/s is somewhat enough for medium range engagements but will feel slow in close range battle against fast tanks like the M41 and AUBL/74. The vertical targeting speed is much slower, and the gun depression of only -2 degrees makes it one of the worst vehicle in game at fighting in sloped terrains. A tiny hill will lift the nozzle up from the target. Finally, the gunsight zoom remains the same 3.5x which is just enough for medium range combat.

Note that since the gun is mounted towards the right side of the SU-122P, so when you aim and shoot to the left the tank will turn slightly to the right due to the huge recoil.

122 mm D-25S Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 28 -2°/+20° ±7° N/A 6.16 8.53 10.36 11.46 12.19 21.71 19.21 17.70 16.70
Realistic 4.17 4.90 5.95 6.58 7.00

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
BR-471 APHE 205 201 182 161 143 127
BR-471B APHEBC 205 203 192 178 166 155
BR-471D APCBC 230 227 215 200 186 173
OF-471 HE 37 37 37 37 37 37
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%
BR-471 APHE 795 25 1.2 19 246.4 47° 60° 65°
BR-471B APHEBC 795 25 1.2 19 246.4 48° 63° 71°
BR-471D APCBC 800 25 1.2 19 192.5 48° 63° 71°
OF-471 HE 795 25 0 0.1 3,600 79° 80° 81°

Ammo racks

Ammo racks of the SU-122P
Full
ammo 		Ammo
part 		1st
rack empty 		2nd
rack empty 		3rd
rack empty 		4th
rack empty 		Visual
discrepancy
28 Projectiles
Propellants 		22 (+6)
19 (+9) 		12 (+16)
14 (+14) 		11 (+17)
4 (+24) 		1 (+27)
1 (+27) 		No

Notes:

  • The SU-122P uses two-piece ammunition, composed of propellant bags (orange) and projectiles (yellow). Both have separate racks.
  • Projectiles and propellant bags are modeled individually and disappear after having been shot or loaded.

Usage in battles

Differences between non-volumetric shells and volumetric shells hitting a Tiger I

An important note when engaging tanks, especially Tiger I's, is that, with the implementation of volumetric shells, you can no longer expect your shells to pierce through small openings or right past an obstacle. The large 122 mm calibre of your shells will result in it catching on an armour plate's edge very often, losing all of its penetration. For example, a Tiger I has some edges that can absorb your shell unexpectedly, despite having flat armour. Thus you must always make sure that where you are aiming at is absolutely free of obstruction, or it may result in a non-penetration or a ricochet. This can be seen in the diagram to the right.

Specific Enemies Worth Noting

  • T28 - You can only penetrate the cupolas on top of the tank. If they're hidden or you are unsure about the shot, you can try hitting the cannon barrel and running away.
  • T34 / T29 - Turret cheeks can work, although it's best to go for the LFP because the ammo storage is very low in the tank. If you don't see the LFP, try going just below the turret ring, where the driver sits.
  • Tiger II (H) / Panther II - You can easily penetrate the turret cheeks with BR-471B.
  • Ferdinand - Go for the angled armour at the sides of the lower front plate (below the casemate, but above the lowest plates), this will disable Ferdinand's engine and/or driver, so you can flank and finish it off.
  • Panther tank (Family), versions A, D, F and G - You can penetrate the UFP
  • Tortoise - Shoot to the right of the gun of the Tortoise, when you see it head-on if shoot on the left plate there is a chance of a one-shot
  • Ho-Ri Production - You cannot reliably penetrate or damage this tank frontally. You can try disabling the cannon barrel and then flanking is your best option (or running).

Pros and cons

Pros:

  • One of the fastest reloading Soviet vehicles equipped with a 122 mm cannon
  • The D-25S cannon is more than enough to completely destroy almost anything its shells penetrate
  • Quicker and more agile than the ISU-122
  • Smaller target than the ISU-122

Cons:

  • Very poor gun depression
  • Limited gun traverse
  • Obsolete armour thickness, can easily be penetrated
  • Reload time is still more than twice as long as its usual opposition

History

There had been delays in the production of the SU-100 in autumn 1944, and so a new design was offered in the meantime. Uralmash's Design Bureau offered a tank destroyer on the same SU-100 hull, but with a 122 mm D-25S anti-tank gun. The 122 mm gun could be fitted without modification due to the commonality of the gun mounts.

Trials of the new tank destroyer, called the SU-122P, began in October 1944. Afterwards, it was sent to Government trials, passing all of them. It was recommended for service, but it never entered production, partially because of the long reload time of the 122 mm gun.


Archive of the in-game description

A new SPG, designated SU-122P, was designed in the spring of 1944. Its designers attempted to fit the previously developed SU-100 SPG with a powerful 122 mm D-25S cannon with the aim of increasing the SPG's firepower. Outwardly, this SPG differed from the SU-100 in that its barrel was longer and had a muzzle brake.

In September 1944, the SU-122P SPG underwent factory testing, which it passed successfully. In spite of this, the order to put it into mass production did not follow. There were several reasons for this decision. First of all, the 122 mm D-25S cannon's penetration was lower than that of the D-10S by 4-5 mm, and its ammunition capacity was reduced to 26.

Due to its separate loading, its rate of fire was reduced to 3-4 shots per minute, and the weapon's recoil was higher than that of the SU-100's, which negatively affected the undercarriage's durability. The previous issues of inadequate space in the fighting compartment had remained unsolved. In addition, SPGs with a similar cannon had already been designed based on the IS-2, which had a more suitable chassis, hull and cabin for heavy artillery weapons.

Only 1 experimental SU-122P SPG was produced.


Media

Skins

See also

Vehicles equipped with the same chassis

External links

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • other literature.


USSR tank destroyers
SU-76M  SU-76M · SU-76M (5th Gv.Kav.Corps) · SU-85A
SU-57B  SU-57B · SU-76D
T-34 Derivatives  SU-122 · SU-85 · SU-85M · SU-100 · SU-122P
Heavy Tank Derivatives  SU-100Y · ISU-122 · ISU-122S · SU-152 · ISU-152 · Object 268
SU-100P and Derivatives  SU-100P · Object 120
Wheeled  YaG-10 (29-K)
Airborne  ASU-57 · ASU-85
Rocket  BM-8-24 · BM-13N · BM-31-12
ATGM  IT-1 · Shturm-S · Object 775 · Khrizantema-S
Artillery  2S1 · 2S3M
Other  SU-5-1 · ZiS-30 · SU-122-54
USA  SU-57

USSR premium ground vehicles
Light tanks  BA-11 · RBT-5 · BT-7A (F-32) · T-26 (1st Gv.T.Br.) · T-26E · T-126 · PT-76-57 · 2S38
Medium tanks  T-34 (Prototype) · T-34 (1st Gv.T.Br.) · T-34E · T-34-57 (1943) · T-34-85E · T-34-100 · T-44-122 · TO-55 · T-55AM-1 · T-72AV (TURMS-T) · T-80UD · Т-80U-Е1
  ▂M3 Medium · ▂M4A2 · ▂T-III · ▂T-V · ▂МК-IX "Valentine"
Heavy tanks  SMK · T-35 · ▂MK-II "Matilda" · KV-1E · KV-2 (1940) · KV-2 (ZiS-6) · KV-122 · KV-220 · IS-2 "Revenge" · Object 248 · IS-6 · T-10A
Tank destroyers  BM-8-24 · BM-13N · BM-31-12
  SU-57 · SU-76D · SU-76M (5th Gv.Kav.Corps) · SU-85A · SU-100Y · SU-122P · Object 120
SPAA  ▂Phòng không T-34 · ZUT-37

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