Object 685

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Object 685
General characteristics
3 peopleCrew
75 %Visibility
front / side / backArmour
18 / 43 / 6Hull
50 / 43 / 43Turret
16.5 tWeight
763 hp400 hpEngine power
46.2 hp/t24.2 hp/tPower-to-weight ratio
78 km/h forward
23 km/h back
70 km/h forward
21 km/h back
100 mm 2А48 cannonMain weapon
40 roundsAmmunition
12 roundsFirst-order
6 sReload
-4° / 17°Vertical guidance
7.62 mm SGMT machine gunCoaxial weapon
2000 roundsAmmunition
8 / 10.4 sReload
250 roundsBelt capacity
600 shots/minFire rate
250000 Rp icon.pngResearch
690000 Sl icon.pngPurchase
Sl icon.png2490 / 4218/2870 / 4861/2200 / 3726Repair
200000 Sl icon.pngCrew training
690000 Sl icon.pngExperts
2100 Ge icon.pngAces
226 % Rp icon.pngReward for battle
150 % Sl icon.png130 % Sl icon.png100 % Sl icon.png


GarageImage Object 685.jpg

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.


Game Mode Max Speed (km/h) Weight (tons) Engine power (horsepower) Power-to-weight ratio (hp/ton)
Forward Reverse Stock Upgraded Stock Upgraded
Arcade 78 23 16.5 620 763 37.58 46.24
Realistic 70 21 354 400 21.45 24.24


Main armament

Main article: 2A48 (100 mm)
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 6.00 6.00 6.00 6.00
Realistic 11.9 14.0 17.0 18.8 20.0


Penetration statistics
Ammunition Type of
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
Mass (kg)
Fuse delay
Fuse sensitivity
Explosive Mass
(TNT equivalent) (g)
0% 50% 100%
3BK17M HEATFS 1,085 9.96 0.05 1 1,440 65° 72° 77°
BR-412D APCBC 887 15.9 1.2 19 93.94 48° 63° 71°
3BM25 APFSDS 1,430 3.4 N/A N/A N/A 76° 77° 80°
OF-412 HE 900 15.6 0.1 0.5 1,460 79° 80° 81°
Smoke shell characteristics
Ammunition Velocity
Mass (kg)
Screen radius
Screen deploy time
Screen hold time
Explosive Mass
(TNT equivalent) (g)
3D3 880 15.6 20 5 25 272

Ammo racks

Ammo racks of the Object 685

Last updated:

rack empty
rack empty
rack empty
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rack empty
rack empty
40 29 (+11) 21 (+19) 17 (+23) 13 (+27) (+33) (+39) No
  • Racks 5 and 6 are first-stage ammo racks

Machine guns

Main article: SGMT (7.62 mm)
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.


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


  • Powerful rounds with a fast reload
  • Able to reload while putting out fires or replacing turret crew thanks to the autoloader
  • Has smoke grenades and ESS
  • Good mobility
  • Scouting ability
  • Thin armour avoids excessive spalling
  • Amphibious


  • Thin armour
  • Poor gun depression and elevation
  • Hullbreak
  • Lack of thermal sights
  • Small crew


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


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

USSR light tanks
T-26  T-26 · T-26 (1st Gv.T.Br.) · T-26E · T-26-4
BT  BT-5 · RBT-5 · BT-7 · BT-7 (F-32)
BMP  BMP-1 · BMP-2 · BMP-2M · BMP-3
Other  T-50 · T-60 · T-70 · T-80 · T-126
  BA-11 · PT-76B · Object 685 · Object 906
China  ▂Type 62