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

-The armour on the Object 685 is alloy ABT-101. The armour values in the chart are displayed in rolled homogeneous armour equivalency.

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

Object 685 X-ray view in hangar

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

100mm 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	26.22	__.__	__.__	__.__	6.0	_.__	_.__	_.__
Realistic					11.9	14.04	__.__	__.__	__.__

Ammunition

Penetration statistics
Ammunition	Type of warhead	Penetration @ 90° (mm)
		10 m	100 m	500 m	1,000 m	1,500 m	2,000 m
3BK17M	HEATFS	390	390	390	390	390	390
3BM25	APFSDS	335	330	307	290	275	260
BR-412D	APCBC	239	236	223	207	192	178
OF-412	HE	20	20	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)	Normalisation at 30° from horizontal	Ricochet
								0%	50%	100%
3BK17M	HEATFS	1,085	9.96	N/A	0.1	1439.9	+0.0°	65°	72°	75°
3BM25	APFSDS	1,430	3.4	N/A	N/A	N/A	+1.5°	76°	77°	78°
BR-412D	APCBC	887	15.9	1.2	19.0	93.9	+4.0°	48°	??°	71°
OF-412	HE	880	15.2	0.1	0.5	1462	+0.0°	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 capacity)	Fire rate (shots/minute)	Vertical guidance	Horizontal guidance
2,000 (250)	600	N/A	N/A

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).

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

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:

• Very good stock and unlockable shells
• Can handle up-tiered situations
• Great mobility
• The nature of its thin armour makes penetrating shells cause minimal spalling, high explosive shells may not even trigger and when they do its usually already too late
• Has amphibious capability: perfect for unexpected flanks, accidental dunks, and messing around

Cons:

• Compared to its predecessor, the Object 685 is less effective in just about every way except for its firepower and having thicker armour

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