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

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 forward and backwards.

Mobility characteristic
Weight (tons)	Add-on armour weight (tons)	Max speed (km/h)
16.5	N/A	?? (AB)
		?? (RB/SB)
Engine power (horsepower)
Mode	Stock	Upgraded
Arcade	???	???
Realistic/Simulator	???	400
Power-to-weight ratio (hp/ton)
Mode	Stock	Upgraded
Arcade	??.??	??.??
Realistic/Simulator	??.??	24.24

Armaments

Main armament

100 mm 2A48
Capacity			Vertical guidance	Horizontal guidance	Stabilizer
40			-4°/+17°	±180°	Two-plane
Turret rotation speed (°/s)
Mode	Stock	Upgraded	Prior + Full crew	Prior + Expert qualif.	Prior + Ace qualif.
Arcade	??.??	??.??	??.??	??.??	??.??
Realistic	??.??	??.??	??.??	??.??	20.00
Reloading rate (seconds)
Stock	Prior + Full crew	Prior + Expert qualif.	Prior + Ace qualif.
??.??	??.??	??.??	6.0

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	?? (+??)	?? (+??)	?? (+??)	?? (+??)	?? (+??)	?? (+??)	??

Optics

Object 685 Optics
	Default magnification	Maximum magnification
Main Gun optics	X3.5	X8.0
Comparable optics	???

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:

Cons:

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