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IS-5 (Object 730)

IS-5 (Object 730)

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Premium  IS-5 (Object 730)

AnnoR113_Object_730.png
Battle Tier
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Overview
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Well, the ones further down, of course.
" for more information
[Client Values; Actual values in
Specifically, the mismatch in crew values caused by commander's 10% crew skill bonus. Outside of a crew of 1 commander only, 100% crew is a fiction. The client values, given for 100% crew, will normally be taken into battle with 110% crew skill members aside from specific functions, causing their actual performance to deviate from the expected client value. These differences are taken into account in tooltip boxes.
]
12,000  Gold Cost
15501550 HP Hit Points
49.05/54.949.05/54.9 t Weight Limit
Crew
  1. Commander (Radio Operator)
  2. Gunner
  3. Driver
  4. Loader
Mobility
700700 hp Engine Power
42/14 km/h Speed Limit
2626 deg/s Traverse
14.2714.27 hp/t Power/Wt Ratio
NoNo Pivot
Armor
120/120/60 mm Hull Armor
201/129/90201/129/90 mm Turret Armor
Armament







{{#ifeq:HOLLOW_CHARGE|ARMOR_PIERCING||



{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||


APCR/HEAT/HE







{{#ifeq:HOLLOW_CHARGE|ARMOR_PIERCING||



{{#ifeq:HIGH_EXPLOSIVE|ARMOR_PIERCING||


APCR/HEAT/HE
Shells




















1180/5200/608




















1180/5200/608
Shell Cost
390/390/530390/390/530 HP Damage
221/270/61221/270/61 mm Penetration



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4.76 r/m 

Standard Gun

Reload Times
Nominal: 12.6 s
50% Crew: 15.61 s
75% Crew: 13.63 s
100% Crew: 12.08 s
Rammer: 10.87 s
Vents: 11.81 s
Both: 10.63 s
Both and BiA: 10.4 s
Both and Max Crew %: 9.97 s

See Crew, Consumables, or Equipment for more information.



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4.76 r/m 

Standard Gun

Reload Times
Nominal: 12.6 s
50% Crew: 15.61 s
75% Crew: 13.63 s
100% Crew: 12.08 s
Rammer: 10.87 s
Vents: 11.81 s
Both: 10.63 s
Both and BiA: 10.4 s
Both and Max Crew %: 9.97 s

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






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1895.4

Standard Gun

Using Shell Type 1 (390 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1895.4
50% Crew: 1528.8
75% Crew: 1751.1
100% Crew: 1977.3
100% Crew
Vents: 2020.2
Rammer: 2195.7
Both: 2246.4
Both and BiA: 2297.1
Both and Max Crew %: 2394.6

Advantageous Damage Per Minute
First-shot DPM: 2285.4
50% Crew: 1918.8
75% Crew: 2141.1
100% Crew: 2367.3
100% Crew
Rammer: 2585.7
Vents: 2410.2
Both: 2636.4
Both and BiA: 2687.1
Both and Max Crew %: 2784.6

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (390 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1895.4
50% Crew: 1528.8
75% Crew: 1751.1
100% Crew: 1977.3
100% Crew
Vents: 2020.2
Rammer: 2195.7
Both: 2246.4
Both and BiA: 2297.1
Both and Max Crew %: 2394.6

Advantageous Damage Per Minute
First-shot DPM: 2285.4
50% Crew: 1918.8
75% Crew: 2141.1
100% Crew: 2367.3
100% Crew
Rammer: 2585.7
Vents: 2410.2
Both: 2636.4
Both and BiA: 2687.1
Both and Max Crew %: 2784.6

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (530 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 2575.8
50% Crew: 2077.6
75% Crew: 2379.7
100% Crew: 2687.1
100% Crew
Vents: 2745.4
Rammer: 2983.9
Both: 3052.8
Both and BiA: 3121.7
Both and Max Crew %: 3254.2

Advantageous Damage Per Minute
First-shot DPM: 3105.8
50% Crew: 2607.6
75% Crew: 2909.7
100% Crew: 3217.1
100% Crew
Rammer: 3513.9
Vents: 3275.4
Both: 3582.8
Both and BiA: 3651.7
Both and Max Crew %: 3784.2

See here, here, or here for more information.






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1895.4

Standard Gun

Using Shell Type 1 (390 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1895.4
50% Crew: 1528.8
75% Crew: 1751.1
100% Crew: 1977.3
100% Crew
Vents: 2020.2
Rammer: 2195.7
Both: 2246.4
Both and BiA: 2297.1
Both and Max Crew %: 2394.6

Advantageous Damage Per Minute
First-shot DPM: 2285.4
50% Crew: 1918.8
75% Crew: 2141.1
100% Crew: 2367.3
100% Crew
Rammer: 2585.7
Vents: 2410.2
Both: 2636.4
Both and BiA: 2687.1
Both and Max Crew %: 2784.6

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (390 Damage):


Theoretical Damage Per Minute
Nominal DPM: 1895.4
50% Crew: 1528.8
75% Crew: 1751.1
100% Crew: 1977.3
100% Crew
Vents: 2020.2
Rammer: 2195.7
Both: 2246.4
Both and BiA: 2297.1
Both and Max Crew %: 2394.6

Advantageous Damage Per Minute
First-shot DPM: 2285.4
50% Crew: 1918.8
75% Crew: 2141.1
100% Crew: 2367.3
100% Crew
Rammer: 2585.7
Vents: 2410.2
Both: 2636.4
Both and BiA: 2687.1
Both and Max Crew %: 2784.6

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (530 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 2575.8
50% Crew: 2077.6
75% Crew: 2379.7
100% Crew: 2687.1
100% Crew
Vents: 2745.4
Rammer: 2983.9
Both: 3052.8
Both and BiA: 3121.7
Both and Max Crew %: 3254.2

Advantageous Damage Per Minute
First-shot DPM: 3105.8
50% Crew: 2607.6
75% Crew: 2909.7
100% Crew: 3217.1
100% Crew
Rammer: 3513.9
Vents: 3275.4
Both: 3582.8
Both and BiA: 3651.7
Both and Max Crew %: 3784.2

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


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0.46 m 

With 50% Crew: 0.57 m
With 75% Crew: 0.498 m
With 100% Crew: 0.441 m
With BiA: 0.431 m
With BiA and Vents: 0.422 m
Maximum possible: 0.404 m

For more details, see Crew


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0.46 m 

With 50% Crew: 0.57 m
With 75% Crew: 0.498 m
With 100% Crew: 0.441 m
With BiA: 0.431 m
With BiA and Vents: 0.422 m
Maximum possible: 0.404 m

For more details, see Crew
Accuracy


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3.2 s 

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

For more details, see Crew or Equipment


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3.2 s 

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

For more details, see Crew or Equipment
Aim time
2424 deg/s Turret Traverse
360° Gun Arc
-5°/+17°-5°/+17° Elevation Arc
3030 rounds Ammo Capacity
General
1515 % Chance of Fire






360 m 

With 50% Crew: 282.8 m
With 75% Crew: 321.5 m
With 100% Crew: 360 m
With Recon and Situational Awareness: 378.2 m
With Coated Optics: 396 m
With Binocular Telescope: 450 m
Maximum possible: 515.4 m

For more details, see Skills or Equipment






360 m 

With 50% Crew: 282.8 m
With 75% Crew: 321.5 m
With 100% Crew: 360 m
With Recon and Situational Awareness: 378.2 m
With Coated Optics: 396 m
With Binocular Telescope: 450 m
Maximum possible: 515.4 m

For more details, see Skills or Equipment
View Range


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730 m 

With 50% Crew: 573.6 m
With 75% Crew: 651.8 m
With 100% Crew: 730 m
With 100% Signal Boost: 876 m
When affected by 100% Relaying: 803 m
Maximum possible: 1050.4 m

For more details, see Skills or Equipment


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730 m 

With 50% Crew: 573.6 m
With 75% Crew: 651.8 m
With 100% Crew: 730 m
With 100% Signal Boost: 876 m
When affected by 100% Relaying: 803 m
Maximum possible: 1050.4 m

For more details, see Skills or Equipment
Signal Range
IS-5 (Object 730)


VIII

annoR113_Object_730.png

12000

The IS-5 (Object 730) is a Soviet tier 8 premium heavy tank.

The development of the vehicle was started in 1949 by the Design Bureau of the Chelyabinsk Kirov Plant under the supervision of Joseph Kotin. In 1950 a preproduction batch of 10 vehicles was launched. After the vehicle underwent all trials and received upgrades, it was adopted for service in 1953 under the designation IS-8.

Modules / Available Equipment and Consumables

Modules

Ico_gun_alpha.png

Guns

Tier Gun Penetration
(mm)
Damage
(HP)
Rate of fire
(rounds/minute)
Dispersion
(m/100m)
Aiming time
(s)
Weight
(kg)
Price
(Credits)

VIII 122 mm D-25TA 221/270/61 390/390/530 4.76 0.46 3.2 2590 125140

Ico_turret_alpha.png

Turrets

Tier Turret Turret Armor (front/sides/rear)
(mm)
Turret Traverse Speed
(deg/s)
View Range
(m)
Weight
(kg)
Price
(Credits)

VIII IS-5 (Object 730) 201/129/90 24 360 10500 30000

Ico_engine_alpha.png

Engines

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

IX V-12-5 700 15 1024 84000

Ico_suspension_alpha.png

Suspensions

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

VIII IS-5 (Object 730) 54.9 26 B/2 10000 30000

Ico_radio_alpha.png

Radios

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

X 10RKM 730 100 52200


Compatible Equipment

Vertical Stabilizer Mk 2 Heavy Spall Liner Camouflage Net Fill Tanks with CO2 Coated Optics Enhanced Gun Laying Drive Enhanced Torsion Bars 5+ t Class Cyclone Filter Improved Ventilation Class 3 Large-Caliber Tank Gun Rammer Binocular Telescope Toolbox "Wet" Ammo Rack Class 2 

Compatible Consumables

Automatic Fire Extinguisher Manual Fire Extinguisher Large First Aid Kit Large Repair Kit Lend-Lease Oil Extra Combat Rations Removed Speed Governor Small First Aid Kit Small Repair Kit 


Player Opinion

Pros and Cons

Pros:


  • Great armor for its tier (even better than T-10)
  • Good mobility for a heavy tank
  • Pen is good for a Tier 8 RU premium
  • Standard APCR shells travel quickly


Cons:


  • Gun has fairly bad accuracy (worse than BL-9 on IS-3)
  • Aiming circle blooms quite large anytime the tank moves
  • Turret front that isn't autobounce is weak
  • Drivers hatch is a weak spot ( only 60mm ) not being well angled like the IS-3 or T-10


Performance

One of the better tier 8 Russian premiums, as it still has much of the speed of the IS3, while not having the pen issues that the IS6 and KV-5 have. The armor is very good in top tier games, as the pike nose is 120mm thick and very well sloped, but the lower plate is quite weak. The side armor is typical hightier IS line side armor, a black hole if anyone shoot the spaced side. Above that, the armor is 120mm still, so a little angling can still bounce shells. By far, the worst aspect of this tank is the abysmal gun handling and accuracy. Other than that, a very good premium that doesn't feel the need to spam HEAT at tanks its same tier.


Early Research

None required


Suggested Equipment


Large-caliber Tank Gun Rammer Vertical Stabilizer Enhanced Gun Laying Drive 


Gallery

Historical Info

Object 730 (also known under its IS-5 designation) was a Soviet heavy tank and a precursor to the later design known as the IS-8 (or T-10). To avoid confusion: there were two IS-5 tanks actually. One was a modified IS-2 (also known as Object 248), the other is this one.

The development of this vehicle started in late 1948. The goal was nothing less than complete overhaul (modernization) of the IS-4 heavy tank in order to increase its performance. The designers of the vehicle (Chelyabinsk plant) proposed to replace a number of internal components and to make the entire vehicle weigh less (specifically, to lower the weight from IS-4′s 60 tons to 50 tons. This “slimming”, along with the use of modernized engine was to assure better combat characteristics.


The early variant of Object 730 was developed in Spring 1949 by the Chelyabinsk Tractor Plant (ChTZ) by a team led by Zh.J.Kotin. It was quite different from the original IS-4, especially the turret was reworked to implement the lessons learned during the IS-3 and IS-7 development. The transmission, suspension and loading mechanism were updated as well, the combat and engine compartments also underwent complete overhaul. The new modernized turret was cast with variable thickness and was fitted with the classic D-25T gun in a new mount, that was sturdier and also easier to fix and install. The gun was fitted with new electromechanical shell loading assistant for higher rate of fire.

In early April 1949, the full set of documents along with a wooden mock-up was sent to Moscow. There, the representatives of the army and the industry checked it out and made a list of required improvements to the design. The design was updated as a result and in May 1949, it was approved. After that, the designers started working on assembly documents for the most difficult to produce components first, as the production of a new tank took a significant effort to organize. The documents were ready in late June 1949.

The assembly of the prototypes was delayed however and it was decided to use modified IS-4 vehicles as prototypes instead. In order to meet the testing deadline (which was August 1949), the designers took two IS-4 tanks and reduced their weight to 50 tons by removing the turrets and using mockup weight blocks instead. The V-12 engine in the prototypes produced 700 horsepower, the stronger, modified V-12-5 appeared only later. A whole set of modules for the future Object 730 was also tested on the IS-7 prototypes, modified for this task. And so was the summer of 1949 filled with testing of various components of the vehicle in various ways.

The first real hull of the true Object 730 was ready on 30.7.1949, second hull arrived on 9.8.1949 in Chelyabinsk. At this point, the assembly of both tanks was further delayed, as some of the components were still not developed properly or were still being tested. Nevertheless, the first prototype was ready in mid-September 1949. The first prototypes still had an older engine cooling model and 6-gear planetary transmission.

Both vehicles were factory-trialed in September 1949, but these trials ended in failure, specifically the transmission proved to be problematic. As a result, it was decided to use a different, 8-gear planetary transmission. Both the 6-gear and the newly designed 8-gear one were tested against one another and the test showed the superiority of the new design. This change (along with several others) were implemented into the Object 730 project by the end of 1949. A new iteration of Object 730 documents appeared in January 1950 with this (and other changes) already implemented.

In March 1950, three more (already improved) prototypes were built and in mid-April 1950, the prototypes underwent series of difficult trials. The results were positive and all three prototypes fulfilled the requirements. The vehicles were judged to be more reliable than other contemporary medium tanks and there was room for modernization as well. More trials followed and in summer 1950, the project was polished and 10 vehicles were built. These were sent to various sites for military trials and despite some shortcomings of the suspension, they again passed them successfully.

Despite these successes however, the tank was not accepted in service, as by the end of 1950, a new list of requirements for the project was issued by the arty and the ministry of transportation. This new list required a significant overhaul, which would eventually take years to complete and by the end, the vehicle would recieve a new designation, the IS-8. It would eventually be accepted in service as the T-10 in 1953. Even though the Object 730 (IS-5) was not mass-produced, it allowed the development of various modern components, later used for the IS-8 tank.


Historical Gallery

USSR
Light Tanks IMS-1 IIBT-2 IIT-45 IIT-26 IIT-60 IITetrarch IIIBT-7 IIIBT-SV IIILTP IIIM3 Light IIIBT-7 artillery IIIT-127 IIIT-46 IIIT-70 IVA-20 IVT-50 IVT-80 IVValentine II VIMT-25 VIILTTB VIIIT-54 ltwt.
Medium Tanks IVA-32 IVT-28E with F-30 IVT-28 VMatilda IV VT-34 VIA-43 VIT-34-85M VIT-34-85 Rudy VIT-34-85 VIIA-44 VIIKV-13 VIIT-43 VIIT-44-122 VIIIObject 416 VIIIT-54 first prototype VIIIT-44-100 (R) VIIIT-44 IXObject 430 Version II IXT-54 XObject 140 XObject 430 XObject 907 XT-22 medium XT-62A
Heavy Tanks VChurchill III VKV-1S VKV-220-2 VKV-220-2 Beta Test VKV-1 VIKV-2 VIKV-85 VIT-150 VIIIS VIIKV-3 VIIKV-122 VIIIS-2 VIIIIS-3 VIIIIS-6 VIIIKV-5 VIIIKV-4 VIIIIS-5 (Object 730) VIIIIS-3A VIIIKV-4 Kreslavskiy VIIIObject 252U Defender VIIIObject 252U IXT-10 IXST-I XIS-4 XIS-7 XObject 260
Tank Destroyers IIAT-1 IIISU-76M IIISU-76I IVSU-85B VSU-85 VSU-85I VISU-100 VISU-100Y VIIISU-122S VIISU-152 VIISU-100M1 VIISU-122-44 VIIIISU-152 VIIIISU-130 VIIISU-101 IXObject 704 IXSU-122-54 XObject 263 XObject 268
Self-Propelled Artillery IISU-18 IIISU-26 IVSU-5 VSU-122A VISU-8 VIIS-51 VIISU-14-1 VIIISU-14-2 IX212A XObject 261
Heavy Tanks
USA VT14 VT1 Heavy Tank VIM6 VIIT29 VIIIT26E5 VIIIM6A2E1 VIIIT32 VIIIT34 VIIIT34 B IXM103 XT110E5 XT57 Heavy Tank
UK VChurchill I VExcelsior VIChurchill VII VITOG II* VIIBlack Prince VIIFV201 (A45) VIIICaernarvon IXConqueror XFV215b
Germany IVPz.Kpfw. B2 740 (f) IVDurchbruchswagen 2 VVK 30.01 (H) VIVK 36.01 (H) VIIVK 45.03 VIITiger I VIITiger (P) VIIIVK 100.01 (P) VIIILöwe VIIITiger II VIIIVK 45.02 (P) Ausf. A IXE 75 IXMäuschen IXVK 45.02 (P) Ausf. B XE 100 XMaus XVK 72.01 (K) XPz.Kpfw. VII
France IVB1 VBDR G1 B VIARL 44 VIIAMX M4 mle. 45 VIIIAMX 50 100 VIIIAMX M4 mle. 49 VIIIFCM 50 t IXAMX 50 120 XAMX 50 B
USSR VChurchill III VKV-1S VKV-220-2 VKV-220-2 Beta Test VKV-1 VIKV-2 VIKV-85 VIT-150 VIIIS VIIKV-3 VIIKV-122 VIIIS-2 VIIIIS-3 VIIIIS-6 VIIIKV-5 VIIIKV-4 VIIIIS-5 (Object 730) VIIIIS-3A VIIIKV-4 Kreslavskiy VIIIObject 252U Defender VIIIObject 252U IXT-10 IXST-I XIS-4 XIS-7 XObject 260
China VIIIS-2 VIIIWZ-111 VIII110 VIII112 IXWZ-111 model 1-4 X113
Japan IIIType 91 Heavy IVType 95 Heavy VO-I Experimental VIHeavy Tank No. VI VIO-I VIIO-Ni VIIIO-Ho IXType 4 Heavy XType 5 Heavy
Czechoslovakia
Sweden VIIIEmil I IXEmil II XKranvagn
Premium tanks
USA IIT1E6 IIT2 Light Tank IIT7 Combat Car IIIM22 Locust VM4 Improved VM4A2E4 Sherman VRam II VT14 VIM4A3E8 Fury VIIM56 Scorpion VIIT28 Concept VIIT23E3 VIIIT25 Pilot Number 1 VIIIT26E5 VIIIM46 Patton KR VIIIM6A2E1 VIIIT26E4 SuperPershing VIIIT34 VIIIT34 B VIIIT95E2 XM60 XT95E6
UK IILight Mk. VIC IIISexton I IVAC 1 Sentinel VExcelsior VMatilda Black Prince VIAC 4 Experimental VITOG II* VICromwell B VIIFV201 (A45) VIIAT 15A VIIIFV4202 VIIIChieftain/T95
Germany IIPz.Kpfw. II Ausf. D IIPz.Kpfw. 38H 735 (f) IIIGroßtraktor - Krupp III43 M. Toldi III IIIPz.Kpfw. II Ausf. J IIIPz.Kpfw. S35 739 (f) IIIPz.Kpfw. T 15 IVPz.Kpfw. B2 740 (f) VStuG IV VPz.Kpfw. III Ausf. K VTurán III prototípus VPz.Kpfw. IV hydrostat. VPz.Kpfw. V/IV VPz.Kpfw. V/IV Alpha VPz.Kpfw. T 25 VIDicker Max VIPz.Kpfw. IV Schmalturm VIIE 25 VIIKrupp-Steyr Waffenträger VIIVK 45.03 VIIPanther/M10 VIIIPanther mit 8,8 cm L/71 VIIIKanonenjagdpanzer VIIIRheinmetall Skorpion G VIIIPanzer 58 Mutz VIIIleKpz M 41 90 mm GF VIII8,8 cm Pak 43 Jagdtiger VIIILöwe IXT 55A XVK 72.01 (K)
France IIIFCM 36 Pak 40 V105 leFH18B2 VIIAMX 13 57 GF VIIILorraine 40 t VIIIAMX Chasseur de chars VIIIM4A1 Revalorisé VIIIAMX M4 mle. 49 VIIIFCM 50 t
USSR IIT-45 IITetrarch IIIBT-SV IIILTP IIIM3 Light IIIBT-7 artillery IIISU-76I IIIT-127 IVA-32 IVT-28E with F-30 IVValentine II VChurchill III VKV-220-2 VKV-220-2 Beta Test VMatilda IV VSU-85I VIT-34-85M VIT-34-85 Rudy VISU-100Y VIIISU-122S VIIKV-122 VIIIS-2 VIISU-122-44 VIIT-44-122 VIIIIS-6 VIIIKV-5 VIIIISU-130 VIIIT-54 first prototype VIIIIS-5 (Object 730) VIIIIS-3A VIIIT-44-100 (R) VIIIKV-4 Kreslavskiy VIIIObject 252U Defender VIIIObject 252U XObject 907 XObject 260 XT-22 medium
China VIType 64 VIIType 62 VIIIType 59 VIIIWZ-111 VIIIT-34-3 VIII112 VIII59-Patton X121B
Japan IIType 97 Te-Ke VType 3 Chi-Nu Kai VIHeavy Tank No. VI VIIISTA-2
Czechoslovakia VIŠkoda T 40
Sweden IIL-60 VIStrv m/42-57 Alt A.2 VIIIStrv S1