Difference between revisions of "Object 268"

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== Description ==
 
== Description ==
''In the description, the first part needs to 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 the screenshot of the vehicle. If the novice player does not remember the vehicle by name, they will immediately understand what kind of vehicle it 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.''
  
 
== 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 helpfull for survival in combat?''
+
''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.''
  
 
=== Mobility ===
 
=== Mobility ===
''Write about the mobility of the ground vehicle. Estimate the specific power and maneuverability as well as the maximum speed forward and backward.''
+
''Write about the mobility of the ground vehicle. Estimate the specific power and manoeuvrability, as well as the maximum speed forwards and backwards.''
  
 
== Armaments ==
 
== 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 flexibilty 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.''
+
<!--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|M-64 (152 mm)}}
  
=== Additional armament ===
+
The Object 268 is fitted with the 152mm M-64 cannon, a very fearsome weapon at this BR with three potent rounds that are capable of destroying virtually any vehicle in the game, so as long as the operator is skilled in its use. The ammunition loadout consists of HE, APCBC and HEAT, all three of which are excellent solutions to various situations in a battle.
''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 how to use them and how to fill the ammunition storage. If there is no additional weaponry remove this subsection.''
+
 
 +
This 152mm cannon has an excellent reload speed at 22.2s stock and 18.0s with an Ace crew, which means it has massively increased firepower compared to the similarly-tiered IS-3, which has a reload rate of 27.7s stock and 24.0s Aced.  
  
 
=== Machine guns ===
 
=== Machine guns ===
''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.''
+
<!--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.-->
 +
{{main|KPVT (14.5 mm)}}
 +
 
 +
The Object 268 is armed with a single 14.5mm KPVT heavy machine gun, it is highly effective in dispatching lightly armoured vehicles and defending from air attacks. And can even potentially damage or destroy enemy gun barrels. However, this machine gun is loaded with measly 25 round belts, which only allows for small bursts, punctuated with a lengthly reload.
 +
 
 +
== 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).-->
  
== Usage in the battles ==
+
The Object 268 is an excellent single-direction brawler, as its frontal armour can withstand most shells at its BR, it is capable of locking down an entire street, which dissuades any enemy advances in the area. Although it is best used in urban maps as a brawler, it can also function as a mobile pillbox in rural maps, drawing enemy fire and covering a wide area of the map to deny enemy movements.
''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 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).''
 
  
 
=== Pros and cons ===
 
=== Pros and cons ===
''Summarize and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in a bulleted list. Do not use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - they have a substitution in the form of softer "inadequate", "effective".''
+
<!--Summarize 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:'''
*
+
 
 +
* Excellent frontal protection, the armour is more than 250mm thick in most places and can deflect virtually any kinetic energy projectile at its BR with ease.
 +
* Single frontal weakspot is relatively small and easy to conceal with bushes.
 +
* Excellent firepower, with a fast-firing 152mm and a 14.5mm machine gun, which is perfect for dealing with light tanks and dissuading enemy air support.
 +
* Impressive mobility in a straight line.
 +
* Great blend of firepower and protection allows this vehicle to function as a mobile pillbox, locking down areas of the map.
 +
* All ammunition types remain effective at long ranges, solving an issue that persists with many Russian tanks at this BR.
 +
* Side armour of the casemate is an excellent 100mm. Which allows you to engage targets from multiple directions with relative ease, without having to worry about exposing weaker side armour.
 +
* The original reload speed is retained with the loss of one loader.
 +
* Has access to a researchable Range Finder modification, increasing its already impressive performance at longer ranges.
  
 
'''Cons:'''
 
'''Cons:'''
*
+
 
 +
* Large and boxy profile makes the Object 268 relatively easy to spot.
 +
* Unimpressive turning ability makes it difficult to deal with flanking enemies at closer ranges, and nearly impossible to counter targets directly behind the vehicle.
 +
* Large ammo racks on the sides and rear of the vehicle's casemate make flanking shots extremely lethal and usually unforgiving.
 +
* Firing the cannon kicks up a massive dust cloud, making the vehicle easy to spot when its firing from a concealed position.
 +
* The 14.5mm KPV machine gun cannot point directly to the vehicle's left side, as its traverse is blocked by the rangefinder and cupola.
 +
* Small weakspot next to the gun is only 187mm thick, and is usually lethal if penetrated.
  
 
== 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 big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/historical reference" (example: https://wiki.warthunder.com/Name-vehicles/historical reference) and add a link to it here using the <code>main</code> template. Be sure to include links to sources at the end of the article.''
+
<!--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 big, 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>=== Encyclopedia Info ===</nowiki></code>, also if applicable).-->
 +
 
 +
=== Development ===
 +
 
 +
The '''Object 268''' self-propelled gun was one of the many derivative designs of the ''T-10'' heavy tank. The concept began on 2 July 1952 at the Leningrad Kirov Plant on the order of the Council of Ministers USSR.<ref name="Kinnear1" /> The Object 268 would follow in the same line of doctrine as had the earlier Soviet self-propelled guns of World War II, the ''SU-100'', ''-122'', and ''-152''. This contrasted with the Western concept of a self-propelled gun being used as an artillery piece rather than the Soviet usage as a tank destroyer.<ref name="Kinnear1" /> There had been earlier attempts at converting a heavy tank to a self-propelled gun, using the chassis of the ''IS-4'' and ''IS-7'', but those had not been fully developed and were cancelled. The IS-4 production was running too slowly and the IS-7 had been too complex to manufacture in large numbers.<ref name="Kinnear2" /> The Leningrad Kirov Plant worked to produce an SPG on the T-10 chassis by combining it with the 152 mm M-48 cannon, which had high velocity and was much more powerful than earlier 152 mm cannons. Drawing work led to the ''Object 730'' SPG which would be paired with the M-53 cannon, a parallel development to the M-48.<ref name="Kinnear3" />
 +
 
 +
The Object 730 SPG had five different variants drawn up with each one being unique. Version No.1 was a front mounted casemate design which would be developed into the Object 268. Version No.2 had a rear casemate with the main armament using a drum magazine at the rear of the fighting compartment and the engine at the front of the vehicle.<ref name="Kinnear4" /> Version No.3 abandoned the casemate design and used a conventional turret with all ammunition being stored in the rear of the turret.<ref name="Kinnear4" /> Version No.4 was a slightly modified No.2 with a lengthened hull, addition of a second loader (bringing the crew to five) and a new cupola with a rangefinder and machine gun.<ref name="Kinnear5" /> Version No.5, likewise, was a reworked No.3 to also bring the crew to five and the addition of a 14.5 mm KPV machine gun, along with it using the same engine as would be used in the T-10M.<ref name="Kinnear6" /> Versions No.4 and 5 were rejected due to being too drastic of changes to the base design, and it was decided to go with a slightly modified Version No.1 with the same engine as the T-10M.<ref name="Kinnear7" />
 +
 
 +
=== Final Design and Prototype ===
 +
 
 +
The final design for the Object 268 was presented to the committee in June 1953 using technical drawings and a scale model, which was approved on 25 August by A.I. Radzievsky.<ref name="Kinnear7" /> This would be armed with the 152 mm M-64 cannon along with a 14.5 mm KPVT machine gun on the roof of the casemate, along with a stereoscopic rangefinder. While the crew was kept at five (having two loaders), it was intended to have a crew of four as soon as an automated loading mechanism could be made for the M-64 cannon.<ref name="Kinnear7" /> The main armament was being slowly developed due to being lower priority than 122 mm development, but the M-64 was created by taking the M-53 cannon and slightly shortening it while still maintaining a muzzle velocity of 750 m/s.<ref name="Kinnear8" /> The final drawings for the Object 268 were finalized in June 1954, reviewed in August and construction on prototypes had begun in March 1955.
 +
 
 +
Work continued on the M-64 cannon, with the prototype being completed in December 1955 and one being sent to Leningrad for installation into the Object 268 in February 1956. The prototype Object 268 was finally completed in March 1956 and was also still modified from the final drawings, as it was decided to use flat steel plates for the roof and rear of the casemate rather than the originally planned rounded plates as well modifications to allow the main armament to be installed and removed.<ref name="Kinnear9" />
 +
 
 +
=== Completed Vehicle and Cancellation ===
 +
 
 +
The completed Object 268 prototype was armed with the 152.4 mm M-64 cannon, built at the Leningrad plant, using the TSh-2A "Sharik" sight for direct fire and the ZiS-3 panoramic sight.<ref name="Kinnear10" /> A TKD-09 stereoscopic rangefinder was mounted on the roof of the casemate  along with a 14.5 mm KPVT heavy machine gun in a rotating ring above the gunner's hatch.<ref name="Kinnear10" /> Full ammunition load was 35 rounds, with AP and HE-FRAG being available. The range at which a target could be engaged in direct fire was 900 meters with a maximum indirect fire range of 13,000 meters.<ref name="Kinnear10" /> The hull of the Object 268 was 120 mm thick of RHA and the casemate was 187 mm. The engine used was the V-12-6 generating 750 HP, as well as using the same transmission as the T-10. Weight of the tank was 50 tonnes with a maximum speed of 48 km/h.
 +
 
 +
The Object 268 was ultimately cancelled, largely due to internal problems associated with the development of Soviet tanks. By the time the prototype was completed and trials had finished it was approaching the end of 1957 and even further development had been done. These designs had specifications and characteristics that were more advanced that the Object 268 and would have been so well protected that the M-64 cannon would have difficulty in taking them out.<ref name="Kinnear11" /> It was expected that the Western tank development would also be able to defend against the Object 268, and the T-10 heavy tank had already begun production which could have caused issues if tank plants were made to manufacture a different version at the same time. In addition, a major shift in Soviet doctrine to incorporate more usage of anti-tank guided missiles, which had just been created in the Soviet Union in 1956.<ref name="Kinnear11" /> The Object 268 was not accepted for mass production and further development of the Object 268 was halted, with only the single prototype having been made. It remains in the Kubinka tank polygon and museum.
  
 
== Media ==
 
== Media ==
''An excellent addition to the article will be video guides, as well as screenshots from the game and photos.''
+
<!--Excellent additions to the article would be video guides, screenshots from the game, and photos.-->
 +
{{Youtube-gallery|MwDaA15tiO8|Video of Object 268 running at Kubinka (Russian)<br> Vehicle starts at (10:11)}}
  
== Read 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;''
 
* ''reference to the series of the vehicles;''
* ''links to approximate analogues of other nations and research trees.''
+
* ''links to approximate analogues of other nations and research trees.''-->
''ETC.''
+
* [[T-10M|'''''T-10M''''']] - Object 268 was developed on the hull of the T-10
 +
* [[ISU-152|'''''ISU-152''''']] - Object 268 was intended as the successor to the ISU-152
  
== Sources ==
+
== 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;''
* ''other literature.''
+
* ''encyclopedia page on the tank;''
 +
* ''other literature.''-->
 +
* Kinnear, James and Stephen L. Sewell. ''Soviet T-10 Heavy Tank and Variants.'' Oxford: Osprey Publishing, 2017.
 +
 
 +
== References ==
 +
<references>
 +
<ref name="Kinnear1">James Kinnear and Stephen L. Sewell, ''Soviet T-10 Heavy Tank and Variants'' (Oxford: Osprey Publishing, 2017), p. 113.</ref>
 +
<ref name="Kinnear2">James Kinnear and Stephen L. Sewell, ''Soviet T-10 Heavy Tank and Variants'' (Oxford: Osprey Publishing, 2017), p. 114.</ref>
 +
<ref name="Kinnear3">James Kinnear and Stephen L. Sewell, ''Soviet T-10 Heavy Tank and Variants'' (Oxford: Osprey Publishing, 2017), pp. 114-115.</ref>
 +
<ref name="Kinnear4">James Kinnear and Stephen L. Sewell, ''Soviet T-10 Heavy Tank and Variants'' (Oxford: Osprey Publishing, 2017), p. 115.</ref>
 +
<ref name="Kinnear5">James Kinnear and Stephen L. Sewell, ''Soviet T-10 Heavy Tank and Variants'' (Oxford: Osprey Publishing, 2017), p. 116.</ref>
 +
<ref name="Kinnear6">James Kinnear and Stephen L. Sewell, ''Soviet T-10 Heavy Tank and Variants'' (Oxford: Osprey Publishing, 2017), p. 117.</ref>
 +
<ref name="Kinnear7">James Kinnear and Stephen L. Sewell, ''Soviet T-10 Heavy Tank and Variants'' (Oxford: Osprey Publishing, 2017), p. 118.</ref>
 +
<ref name="Kinnear8">James Kinnear and Stephen L. Sewell, ''Soviet T-10 Heavy Tank and Variants'' (Oxford: Osprey Publishing, 2017), p. 119.</ref>
 +
<ref name="Kinnear9">James Kinnear and Stephen L. Sewell, ''Soviet T-10 Heavy Tank and Variants'' (Oxford: Osprey Publishing, 2017), p. 121.</ref>
 +
<ref name="Kinnear10">James Kinnear and Stephen L. Sewell, ''Soviet T-10 Heavy Tank and Variants'' (Oxford: Osprey Publishing, 2017), p. 122-123.</ref>
 +
<ref name="Kinnear11">James Kinnear and Stephen L. Sewell, ''Soviet T-10 Heavy Tank and Variants'' (Oxford: Osprey Publishing, 2017), p. 124-125.</ref>
 +
</references>
 +
 
 +
{{USSR tank destroyers}}

Revision as of 15:36, 3 November 2019

Object 268
ussr_object_268.png
AB
RB
SB
General characteristics
Brief
Detailed
7.3/7.3/7.3BR
4 peopleCrew
93 %Visibility
front / side / backArmour
120 / 80 / 60Hull
187 / 100 / 50Turret
Mobility
50.0 tWeight
1 431 hp750 hpEngine power
29 hp/t15 hp/tSurface density
54 km/h forward
10 km/h back
50 km/h forward
9 km/h back
Speed
Armament
152 mm М-64 cannonMain weapon
35 roundsAmmunition
17.1 / 22.3 sReload
-5° / 15°Vertical guidance
-6° / 6°Horizontal guidance
14.5 mm KPVT machine gunMachinegun
500 roundsAmmunition
8.0 / 10.4 sReload
50 roundsBelt capacity
600 shots/minFire rate
-5° / 85°Vertical guidance
Economy
170 000 Rp icon.pngResearch
440 000 Sl icon.pngPurchase
Sl icon.png7 000 / 9 338/4 240 / 5 656/5 010 / 6 683Repair
130 000 Sl icon.pngCrew training
440 000 Sl icon.pngExperts
1 400 Ge icon.pngAces
× (208) % Rp icon.pngReward for battle
× 1.8 Sl icon.png× 1.5 Sl icon.png× 1.3 Sl icon.png

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.

General info

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?

If necessary use a visual template to indicate the most secure and weak zones of the armour.

Mobility

Write about the mobility of the ground vehicle. Estimate the specific power and manoeuvrability, as well as the maximum speed forwards and backwards.

Armaments

Main armament

Main article: M-64 (152 mm)

The Object 268 is fitted with the 152mm M-64 cannon, a very fearsome weapon at this BR with three potent rounds that are capable of destroying virtually any vehicle in the game, so as long as the operator is skilled in its use. The ammunition loadout consists of HE, APCBC and HEAT, all three of which are excellent solutions to various situations in a battle.

This 152mm cannon has an excellent reload speed at 22.2s stock and 18.0s with an Ace crew, which means it has massively increased firepower compared to the similarly-tiered IS-3, which has a reload rate of 27.7s stock and 24.0s Aced.

Machine guns

Main article: KPVT (14.5 mm)

The Object 268 is armed with a single 14.5mm KPVT heavy machine gun, it is highly effective in dispatching lightly armoured vehicles and defending from air attacks. And can even potentially damage or destroy enemy gun barrels. However, this machine gun is loaded with measly 25 round belts, which only allows for small bursts, punctuated with a lengthly reload.

Usage in battles

The Object 268 is an excellent single-direction brawler, as its frontal armour can withstand most shells at its BR, it is capable of locking down an entire street, which dissuades any enemy advances in the area. Although it is best used in urban maps as a brawler, it can also function as a mobile pillbox in rural maps, drawing enemy fire and covering a wide area of the map to deny enemy movements.

Pros and cons

Pros:

  • Excellent frontal protection, the armour is more than 250mm thick in most places and can deflect virtually any kinetic energy projectile at its BR with ease.
  • Single frontal weakspot is relatively small and easy to conceal with bushes.
  • Excellent firepower, with a fast-firing 152mm and a 14.5mm machine gun, which is perfect for dealing with light tanks and dissuading enemy air support.
  • Impressive mobility in a straight line.
  • Great blend of firepower and protection allows this vehicle to function as a mobile pillbox, locking down areas of the map.
  • All ammunition types remain effective at long ranges, solving an issue that persists with many Russian tanks at this BR.
  • Side armour of the casemate is an excellent 100mm. Which allows you to engage targets from multiple directions with relative ease, without having to worry about exposing weaker side armour.
  • The original reload speed is retained with the loss of one loader.
  • Has access to a researchable Range Finder modification, increasing its already impressive performance at longer ranges.

Cons:

  • Large and boxy profile makes the Object 268 relatively easy to spot.
  • Unimpressive turning ability makes it difficult to deal with flanking enemies at closer ranges, and nearly impossible to counter targets directly behind the vehicle.
  • Large ammo racks on the sides and rear of the vehicle's casemate make flanking shots extremely lethal and usually unforgiving.
  • Firing the cannon kicks up a massive dust cloud, making the vehicle easy to spot when its firing from a concealed position.
  • The 14.5mm KPV machine gun cannot point directly to the vehicle's left side, as its traverse is blocked by the rangefinder and cupola.
  • Small weakspot next to the gun is only 187mm thick, and is usually lethal if penetrated.

History

Development

The Object 268 self-propelled gun was one of the many derivative designs of the T-10 heavy tank. The concept began on 2 July 1952 at the Leningrad Kirov Plant on the order of the Council of Ministers USSR.[1] The Object 268 would follow in the same line of doctrine as had the earlier Soviet self-propelled guns of World War II, the SU-100, -122, and -152. This contrasted with the Western concept of a self-propelled gun being used as an artillery piece rather than the Soviet usage as a tank destroyer.[1] There had been earlier attempts at converting a heavy tank to a self-propelled gun, using the chassis of the IS-4 and IS-7, but those had not been fully developed and were cancelled. The IS-4 production was running too slowly and the IS-7 had been too complex to manufacture in large numbers.[2] The Leningrad Kirov Plant worked to produce an SPG on the T-10 chassis by combining it with the 152 mm M-48 cannon, which had high velocity and was much more powerful than earlier 152 mm cannons. Drawing work led to the Object 730 SPG which would be paired with the M-53 cannon, a parallel development to the M-48.[3]

The Object 730 SPG had five different variants drawn up with each one being unique. Version No.1 was a front mounted casemate design which would be developed into the Object 268. Version No.2 had a rear casemate with the main armament using a drum magazine at the rear of the fighting compartment and the engine at the front of the vehicle.[4] Version No.3 abandoned the casemate design and used a conventional turret with all ammunition being stored in the rear of the turret.[4] Version No.4 was a slightly modified No.2 with a lengthened hull, addition of a second loader (bringing the crew to five) and a new cupola with a rangefinder and machine gun.[5] Version No.5, likewise, was a reworked No.3 to also bring the crew to five and the addition of a 14.5 mm KPV machine gun, along with it using the same engine as would be used in the T-10M.[6] Versions No.4 and 5 were rejected due to being too drastic of changes to the base design, and it was decided to go with a slightly modified Version No.1 with the same engine as the T-10M.[7]

Final Design and Prototype

The final design for the Object 268 was presented to the committee in June 1953 using technical drawings and a scale model, which was approved on 25 August by A.I. Radzievsky.[7] This would be armed with the 152 mm M-64 cannon along with a 14.5 mm KPVT machine gun on the roof of the casemate, along with a stereoscopic rangefinder. While the crew was kept at five (having two loaders), it was intended to have a crew of four as soon as an automated loading mechanism could be made for the M-64 cannon.[7] The main armament was being slowly developed due to being lower priority than 122 mm development, but the M-64 was created by taking the M-53 cannon and slightly shortening it while still maintaining a muzzle velocity of 750 m/s.[8] The final drawings for the Object 268 were finalized in June 1954, reviewed in August and construction on prototypes had begun in March 1955.

Work continued on the M-64 cannon, with the prototype being completed in December 1955 and one being sent to Leningrad for installation into the Object 268 in February 1956. The prototype Object 268 was finally completed in March 1956 and was also still modified from the final drawings, as it was decided to use flat steel plates for the roof and rear of the casemate rather than the originally planned rounded plates as well modifications to allow the main armament to be installed and removed.[9]

Completed Vehicle and Cancellation

The completed Object 268 prototype was armed with the 152.4 mm M-64 cannon, built at the Leningrad plant, using the TSh-2A "Sharik" sight for direct fire and the ZiS-3 panoramic sight.[10] A TKD-09 stereoscopic rangefinder was mounted on the roof of the casemate along with a 14.5 mm KPVT heavy machine gun in a rotating ring above the gunner's hatch.[10] Full ammunition load was 35 rounds, with AP and HE-FRAG being available. The range at which a target could be engaged in direct fire was 900 meters with a maximum indirect fire range of 13,000 meters.[10] The hull of the Object 268 was 120 mm thick of RHA and the casemate was 187 mm. The engine used was the V-12-6 generating 750 HP, as well as using the same transmission as the T-10. Weight of the tank was 50 tonnes with a maximum speed of 48 km/h.

The Object 268 was ultimately cancelled, largely due to internal problems associated with the development of Soviet tanks. By the time the prototype was completed and trials had finished it was approaching the end of 1957 and even further development had been done. These designs had specifications and characteristics that were more advanced that the Object 268 and would have been so well protected that the M-64 cannon would have difficulty in taking them out.[11] It was expected that the Western tank development would also be able to defend against the Object 268, and the T-10 heavy tank had already begun production which could have caused issues if tank plants were made to manufacture a different version at the same time. In addition, a major shift in Soviet doctrine to incorporate more usage of anti-tank guided missiles, which had just been created in the Soviet Union in 1956.[11] The Object 268 was not accepted for mass production and further development of the Object 268 was halted, with only the single prototype having been made. It remains in the Kubinka tank polygon and museum.

Media

Video of Object 268 running at Kubinka (Russian)
Vehicle starts at (10:11)

See also

  • T-10M - Object 268 was developed on the hull of the T-10
  • ISU-152 - Object 268 was intended as the successor to the ISU-152

External links

  • Kinnear, James and Stephen L. Sewell. Soviet T-10 Heavy Tank and Variants. Oxford: Osprey Publishing, 2017.

References

  1. 1.0 1.1 James Kinnear and Stephen L. Sewell, Soviet T-10 Heavy Tank and Variants (Oxford: Osprey Publishing, 2017), p. 113.
  2. James Kinnear and Stephen L. Sewell, Soviet T-10 Heavy Tank and Variants (Oxford: Osprey Publishing, 2017), p. 114.
  3. James Kinnear and Stephen L. Sewell, Soviet T-10 Heavy Tank and Variants (Oxford: Osprey Publishing, 2017), pp. 114-115.
  4. 4.0 4.1 James Kinnear and Stephen L. Sewell, Soviet T-10 Heavy Tank and Variants (Oxford: Osprey Publishing, 2017), p. 115.
  5. James Kinnear and Stephen L. Sewell, Soviet T-10 Heavy Tank and Variants (Oxford: Osprey Publishing, 2017), p. 116.
  6. James Kinnear and Stephen L. Sewell, Soviet T-10 Heavy Tank and Variants (Oxford: Osprey Publishing, 2017), p. 117.
  7. 7.0 7.1 7.2 James Kinnear and Stephen L. Sewell, Soviet T-10 Heavy Tank and Variants (Oxford: Osprey Publishing, 2017), p. 118.
  8. James Kinnear and Stephen L. Sewell, Soviet T-10 Heavy Tank and Variants (Oxford: Osprey Publishing, 2017), p. 119.
  9. James Kinnear and Stephen L. Sewell, Soviet T-10 Heavy Tank and Variants (Oxford: Osprey Publishing, 2017), p. 121.
  10. 10.0 10.1 10.2 James Kinnear and Stephen L. Sewell, Soviet T-10 Heavy Tank and Variants (Oxford: Osprey Publishing, 2017), p. 122-123.
  11. 11.0 11.1 James Kinnear and Stephen L. Sewell, Soviet T-10 Heavy Tank and Variants (Oxford: Osprey Publishing, 2017), p. 124-125.


USSR tank destroyers
Light  SU-5-1 · ZiS-30 · SU-57 · SU-57B · SU-76M · SU-76M (5th Guards Cavalry Corps) · YaG-10 (29-K) · SU-85A
Medium  SU-122 · SU-85 · SU-85M · SU-100 · SU-100P · SU-122P · SU-122-54
Heavy  SU-100Y · ISU-122 · ISU-122S · SU-152 · ISU-152 · Object 268 · Object 120 "Taran"
Rocket  BM-8-24 · BM-13N
Airborne  ASU-57 · ASU-85