Object 775

Object 775

Shturm-S

Khrizantema-S

Object 775

Shturm-S

Khrizantema-S

USSR

VI Rank

Battle rating:

AB	RB	SB
9.3	9.3	9.3

Class:

Tank destroyer

ATGM vehicle

Research:190 000

Purchase:520 000

Description

In the mid 1960s, the USSR devised a new idea for a frontline tank destroyer: a low-profile armoured tank with a gun-launcher. By utilizing multiple technologies of the time, namely hydropneumatic suspension, a drum autoloader, and a shortened gun-launcher, the profile of the vehicle could be lowered to a new extreme. The first prototype of this project, the "Object 775" was a more obscure but intriguing piece of military history. With its unique design and the ability to fire anti-tank guided missiles from a concealed, low-profile turret, the Object 775 aimed to be a formidable addition to the Soviet military's arsenal. However, the program faced various challenges, including technical issues with the drum autoloader and hydropneumatic suspension cramped in such a small vehicle, and changing military requirements and Soviet tank doctrine of the era. These hurdles ultimately led to the cancellation of the program to instead focus on the development of a new dedicated MBT armed with an autoloaded 115 mm gun firing APFSDS rounds, resulting in the Object 435 prototype for the future T-64. The Object 775's story is a reminder of the ever-evolving nature of military technology and the need for constant adaptation to meet the demands of modern warfare.

The Object 775, introduced in Update "Kings of Battle", is definitely unique in its appearance. The Object 775 excels in hidden strikes at most ranges due to its strong ATGM, comically low profile, and decent frontal armour for its battle rating. When utilizing the hydropneumatic suspension and the built-in dozer blade to entrench the tank, the Object 775 can achieve almost complete invisibility from the enemy line of sight in its own "dug-in" cover, using its suspension to "peek" up and take a shot before lowering back down. The Object 775, however, most not be played as a brawler, as its side armour and internal protection is very weak. Due having a large ammo rack around the inside of the tank and only two crew members in the turret, pretty much any penetrating or overpressuring shot is guaranteed to destroy the tank. All in all, the Object 775 builds on the doctrine of Soviet missile tank destroyer engagement, primarily from the preceding IT-1.

General info

Survivability and armour

Composite armour

Balanced protection against all types of ammunition

ESS

Creation of a smoke screen in the direction of movement of the vehicle

Self-entrenching equipment

Creation of ramparts and trenches in soft ground

Armourfront / side / back

Hull100 / 80 / 40

Turret200 / 120 / 65

Crew2 people

Visibility74 %

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.

Armour type:

Armour	Front (Slope angle)	Sides	Rear	Roof
Hull	___ mm	___ mm Top ___ mm Bottom	___ mm	___ - ___ mm
Turret	___ - ___ mm Turret front ___ mm Gun mantlet	___ - ___ mm	___ - ___ mm	___ - ___ mm
Cupola	___ mm	___ mm	___ mm	___ mm

Notes:

Mobility

 

Controlled suspension

It is possible to adjust the ground clearance or more complex suspension positions

Speedforward / back

AB72 / 6 km/h

RB and SB67 / 5 km/h

Number of gears7 forward

1 back

Weight35.5 t

Engine power

AB1 336 hp

RB and SB700 hp

Power-to-weight ratio

AB37.6 hp/t

RB and SB19.7 hp/t

The mobility is solidly average. The Object 775 is very similar to the T-62, with a long and narrow chassis coupled to a decent engine. The vehicle will never be first to the fight or to cap points but it is fast enough to fit its playstyle very comfortably.

The vehicle has acceptable terrain-crossing capability but doesn't have the best torque for going up bigger hills or for keeping speed up on bumpy terrain.

Game Mode	Max Speed (km/h)		Weight (tons)	Engine power (horsepower)		Power-to-weight ratio (hp/ton)
	Forward	Reverse		Stock	Upgraded	Stock	Upgraded
Arcade	72	6	35.5	994	1,336	28	37.63
Realistic	67	5		619	700	17.44	19.72

Modifications and economy

Repair costBasic → Reference

AB4 564 → 6 111

RB5 190 → 6 949

SB6 599 → 8 836

Total cost of modifications154 700

265 000

Talisman cost2 600

Crew training150 000

Experts520 000

Aces2 100

Research Aces950 000

Reward for battleAB / RB / SB

150 / 210 / 240 %

220 / 220 / 220 %

Modifications

Mobility	Protection	Firepower
Tracks Research: 11 000 Cost: 17 000 340 Suspension Research: 9 500 Cost: 15 000 290 Brake System Research: 9 500 Cost: 15 000 290 Filters Research: 14 000 Cost: 22 000 430 Transmission Research: 14 000 Cost: 22 000 430 Engine Research: 14 000 Cost: 22 000 430	Improved Parts Research: 3 300 Cost: 17 000 340 Improved FPE Research: 2 900 Cost: 15 000 290 Crew Replenishment Research: 14 000 Cost: 22 000 430 ESS Research: 14 000 Cost: 22 000 430 Dozer Blade Research: 14 000 Cost: 22 000 430	Horizontal Drive Research: 11 000 Cost: 17 000 340 Adjustment of Fire Research: 9 500 Cost: 15 000 290 Elevation Mechanism Research: 14 000 Cost: 22 000 430

Armaments

Main armament

125 mm D-126 gun-launcher

Two-plane stabilizer

Reduces the swing of the gun in two planes while moving

Autoloader

Automatically feeds projectiles into the breech. The speed does not depend on the skills of the loader

Ammunition24 rounds

First-order7 rounds

Reload6.0 s

Vertical guidance-5° / 18°

The 775 is armed with the 125mm D-126 gun-launcher system. This weapon will be very familiar to tankers who have played the M551 Sheridan before, as the primary ammunition is an ATGM and an HE round. The barrel is very short, helping maintain the stealth of the vehicle. The turret traverse is not very fast so care will need to be taken to pre-aim the gun around any expected enemy avenues of approach.

The Rubin ATGM is a very solid missile, providing users 500mm of penetration while having great speed (550 m/s) and decent range (2.49 miles). The only downside is that right after leaving the barrel, the missile dips down before coming back into the center of the sight, making firing from behind cover difficult.

The BUR High-Explosive rocket is less functional but can be fun to surprise enemies with. The round drops very quickly and there is no laser rangefinder, making anything but point-blank shots an exercise in skill. The warhead contains the equivalent of 3.96kg of TNT, making it a serious threat to lightly armoured targets.

Given how condensed the ammunition is, you can comfortably take a full loadout. The main ammo storage is in the front of the tank, protected by heavily sloped armour and internal fuel tanks. The central autoloader holds eight rounds, allowing you to fire a new projectile every . The autoloader also gets replenished extremely fast so running out of ammo in the carousel is not life-threatening, unlike many other ATGM vehicles.

125 mm D-126					Turret rotation speed (°/s)					Reloading rate (seconds)
Mode	Capacity	Vertical	Horizontal	Stabilizer	Stock	Upgraded	Full	Expert	Aced	Autoloader
Arcade	24	-5°/+18°	±180°	Two-plane	17.6	24.4	29.6	32.7	34.8	6.00
Realistic					11.9	14.0	17.0	18.8	20.0

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
Rubin	ATGM	500	500	500	500	500	500
BUR	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) (kg)	Ricochet
							0%	50%	100%
BUR	HE	380	22	0.05	0.1	3.96	79°	80°	81°

Missile details
Ammunition	Type of warhead	Velocity (m/s)	Range (m)	Projectile mass (kg)	Fuse delay (m)	Fuse sensitivity (mm)	Explosive mass (TNT equivalent) (kg)	Ricochet
								0%	50%	100%
Rubin	ATGM	550	4,000	28.5	0.05	0.1	4.29	80°	82°	90°

Ammo racks

Full ammo	1st rack empty	2nd rack empty	3rd rack empty	4th rack empty	5th rack empty	6th rack empty	Visual discrepancy
24	__ (+__)	__ (+__)	__ (+__)	__ (+__)	__ (+__)	__ (+__)	__

Machine guns

7.62 mm PKT machine gun (coaxial)

Ammunition2 000 rounds

Belt capacity250 rounds

Reload8.0 s

Fire rate700 shots/min

The only machine gun the 775 has available is a coaxial 7.62 mm PKT. This weapon is next to useless as open-top vehicles are exceedingly rare and it doesn't have the targeting speed or power to damage any air vehicles.

7.62 mm PKT
Mount	Capacity (Belt)	Fire rate	Vertical	Horizontal
Coaxial	2,000 (250)	700	-	-

Usage in battles

The Object 775 plays very similarly to the IT-1, another Soviet missile-only tank. However, unlike the IT-1, the Object 775 can also engage somewhat effectively in the CQC if needed. Like most ATGM tank destroyers, being only equipped with the Rubin anti-tank missile can put the Object 775 at a disadvantage in many situations when facing conventional enemies armed with a cannon, but it does have the capacity to excel in certain situations, like setting ambushes.

Close Range Engagement

Unlike the IT-1, the Object 775 has some chance in CQC due to its very low profile, and the adjustable suspension can help to "level" the battlefield. However, the player should carefully consider their options, because once committed to the attack, backing out is difficult due to the signature Soviet horrendous reverse speed.

Needless to say, some attention must be paid to your team status as well, as sometimes an enemy might get very bold if all allies surrounding you have died, and since you only have one launcher, fear is all you have to protect the Object 775 from a large tank squad.

Mid to Long Range Engagement

The mid to long range is the optimal engagement range for many ATGM tank destroyers and the Object 775 is no exception. However, player must use terrain a bit differently, as unlike the IT-1, the Object 775 doesn't have a top mounted launcher to shoot over the hills but a 125 mm D-126 rifled missile launcher.

Pros and cons

Pros:

• Extremely low profile, as well as an adjustable suspension
• Mouse-guided ATGMs
• Fast auto-loader
• Decent frontal armour

Cons:

• Only two crew members
• Autoloader is relatively large
• Terrible reverse speed
• Poor depression and elevation angles
• No heavy calibre machine gun

History

Devblog

In the early 1960s, the USSR began to develop a promising medium tank with guided missile weapons. Engineers from the Chelyabinsk Tractor Plant presented two prototypes for testing of the Object 775 tank, featuring Rubin anti-tank guided missiles, which are launched from the barrel of the tank. In 1968, the project was closed due to the concentration of efforts on the Object 434 tank project (which became the T-64A). The only surviving Object 775 is on display at the Patriot Park in Kubinka near Moscow.

Media

Videos

The Shooting Range #379 - Metal Beasts section at 00:24 discusses the Object 775.

See also

Other vehicles with gun-launcher systems

• M551 Sheridan - US light tank
• M60A2 Starship - US medium tank
• KPz-70/MBT-70/XM-803 - US/German main battle tanks
• AMX-30 ACRA/AMX-10M - French tanks with the 142m m ACRA gun-launcher

External links

• [Devblog] Object 775: The Flattened Pancake