Object 685

Object 685

BMP-2

BMP-3

Object 685

BMP-2

BMP-3

USSR

VI Rank

Battle rating:

AB	RB	SB
8.3	8.7	8.7

Class:

Light tank

Research:81 000

Purchase:450 000

Show in game

Description

The Object 685 is a rank VI Soviet light tank with a battle rating of 8.3 (AB) and 8.7 (RB/SB). It was introduced in Update 1.91 "Night Vision".

General info

Survivability and armour

Object 685 X-ray view in hangar

• The armour on the Object 685 is Alloy ABT-101. The armour values in the chart are displayed in rolled homogeneous armour equivalence.

Armour	Front (Slope angle)	Sides	Rear	Roof
Hull	54 mm	16 mm	5 mm	6 mm
Turret	19 mm	16 mm	16 mm	8 mm

The Object 685 is a very lightly armoured vehicle. The alloy may at first appear to be somewhat thick, but it is much less effective than rolled homogeneous armour at stopping rounds. The Object 685 can be killed by almost anything, with .50 calibre machine guns able to penetrate even parts of the front armour at close range. Additionally, the Object 685 has hullbreak. The commander and gunner are somewhat far apart, but the Object has only 3 crew, so survivability is not particularly impressive. Generally, Object 685 drivers should not rely on their armour in any situation.

Mobility

Game Mode	Max Speed (km/h)		Weight (tons)	Engine power (horsepower)		Power-to-weight ratio (hp/ton)
	Forward	Reverse		Stock	Upgraded	Stock	Upgraded
Arcade	79	23	16.5	620	868	37.58	52.61
Realistic	71	21		354	455	21.45	27.58

Armaments

Main armament

100 mm 2A48					Turret rotation speed (°/s)					Reloading rate (seconds)
Mode	Capacity	Vertical	Horizontal	Stabilizer	Stock	Upgraded	Full	Expert	Aced	Stock	Full	Expert	Aced
Arcade	40	-4°/+17°	±180°	Two-plane	19.0	26.2	32.0	35.4	37.6	6.0	6.0	6.0	6.0
Realistic					11.9	14.0	17.0	18.5	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
3BK17M	HEATFS	390	390	390	390	390	390
BR-412D	APCBC	239	236	223	207	192	178
3BM25	APFSDS	335	330	307	290	275	260
OF-412	HE	19	19	19	19	19	19

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%
3BK17M	HEATFS	1,085	9.96	N/A	0.1	1,440	65°	72°	77°
BR-412D	APCBC	887	15.90	1.2	19.0	93.94	48°	63°	71°
3BM25	APFSDS	1,430	3.40	N/A	N/A	N/A	76°	77°	80°
OF-412	HE	900	15.20	0.1	0.5	1,460	79°	80°	81°

Smoke shell characteristics
Ammunition	Velocity (m/s)	Projectile Mass (kg)	Screen radius (m)	Screen deploy time (s)	Screen hold time (s)	Explosive Mass (TNT equivalent) (g)
3D3	880	15.6	20	5	25	272

Ammo racks

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

Machine guns

7.62 mm SGMT
Mount	Capacity (Belt)	Fire rate	Vertical	Horizontal
Coaxial	2,000 (250)	600	N/A	N/A

Usage in battles

Gameplay Stock:

The Object 685 is much less powerful when stock. It is equipped with the 3BK17M HEAT-FS shell, which is generally inferior to the 3BM25 shell. Another issue while stock is the mobility, which is not as impressive when stock. Another issue is the lack of the Airstrike modification, which makes spawning in air vehicles easier in ground RB after scouting.

Gameplay Spaded:

The Object 685 is a highly mobile Soviet light tank which has an excellent cannon. Its disadvantages are thin armour and a lack of thermal sights. Object 685 players should avoid areas with heavy foliage, as the lack of thermals will prove detrimental in these areas. The best strategy with the Object 685 is flanking the enemy team using the Object 685's mobility. The amphibious capability can help create new avenues of attack when flanking. The scouting ability also helps the team while on the flanks. One tactic to avoid in the Object 685 is using the ESS system, as enemy thermal sights can see through the smoke, while the Object 685 will effectively blind itself.

Close Range Engagements:

The Object 685 can fare well at close range due to the excellent gun handling and reload rate. Additionally, the mobility of the vehicle allows it to easily outmanoeuvre enemies at close range. However, the thin armour and hullbreak means that getting shot is usually a death sentence.

Long Range Engagements:

The Object 685 may have difficulty in prolonged long range engagements. The main armament is excellent, but the Object is held back by its lack of thermal sights and low survivability. The lack of thermals means that seeing your target may be difficult at long range. Additionally, the low survivability means that the Object 685 will not survive most hits, even at long range.

Modules

Tier	Mobility		Protection	Firepower
I	Tracks		Parts	BR-412D	Horizontal Drive	NVD
II	Suspension	Brake System	FPE	3BM25	Adjustment of Fire	Airstrike
III	Filters		Crew Replenishment	Elevation Mechanism	Smoke grenade	Laser rangefinder
IV	Transmission	Engine	ESS	Artillery Support	Improved optics	3D3

Pros and cons

Pros:

• Powerful rounds with a fast reload
• Good mobility
• Scouting ability
• Thin armour avoids excessive spalling
• Amphibious

Cons:

• Thin armour
• Hullbreak
• Lack of thermal sights
• Small crew

History

After production of the PT-76 was discontinued, Soviet engineers began work on developing a suitable replacement around a set of requirements provided by the military. The requirements were sent to three different design bureaus, with each bureau developing its own vehicle around the given specifications.

One of the proposed designs, the Object 788, was disqualified early from the competition due to being incomplete and missing several key features mandated by the requirements. The other two designs, the Object 685 and Object 934 were both deemed as sufficient, and work on them continued. By the mid 1970s, both vehicles were built and tested, but neither managed to garner enough interest to warrant a production order being issued. Despite not making it past the prototype stage, design solutions from both vehicles were later applied to other Soviet fighting vehicles.

- From Devblog

Media

Excellent additions to the article would be video guides, screenshots from the game, and photos.

See also

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

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

External links

• [Development] Object 685: Return of the River Mosquito