Object 685

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RANK 4 FRANCE
Somua SM PACK
Object 685
ussr_object_685.png
GarageImage Object 685.jpg
Object 685
AB RB SB
8.3 8.7 8.7
Class:
Research:250 000 Specs-Card-Exp.png
Purchase:690 000 Specs-Card-Lion.png
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

Smoke grenades
Creation of a smoke screen in front of the vehicle
ESS
Creation of a smoke screen in the direction of movement of the vehicle
Armourfront / side / back
Hull60 / 43 / 13
Turret50 / 43 / 43
Crew3 people
Visibility75 %
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

Amphibious
The design allows you to swim and control movement in the water
Speedforward / back
AB78 / 23 km/h
RB and SB70 / 21 km/h
Number of gears4 forward
2 back
Weight16.5 t
Engine power
AB763 hp
RB and SB400 hp
Power-to-weight ratio
AB46.2 hp/t
RB and SB24.2 hp/t
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
Mobility wise, the Object 685 can be considered as a "heavier" Object 906. It is not slow but is not the fastest light tank at the battle-rating. When downtiered, it is able to be faster than most tracked vehicles (most of them reach as most 65 kph while this can reach 75 kph) with exception of the Rooikat 105, Rooikat Mk.1D and Radkampfwagen 90. It's suspension is a realatively soft suspension, meaning it will not damp as much in rough terrain but due to its thin tracks, the surface the tracks have on the floor make it be relatively slow on snow and sand (but faster than many tracked vehicles). It is fully amphibious which makes the Object 685 capable of crossing water bodies which can give an advantage (Eastern Europe river for example) but the speed while on water is lacklusture.

Modifications and economy

Repair costBasic → Reference
AB2 100 → 3 557 Sl icon.png
RB2 390 → 4 048 Sl icon.png
SB2 930 → 4 963 Sl icon.png
Total cost of modifications468 400 Rp icon.png
440 000 Sl icon.png
Talisman cost2 700 Ge icon.png
Crew training200 000 Sl icon.png
Experts690 000 Sl icon.png
Aces2 100 Ge icon.png
Research Aces1 010 000 Rp icon.png
Reward for battleAB / RB / SB
100 / 130 / 150 % Sl icon.png
226 / 226 / 226 % Rp icon.png
Modifications
Mobility Protection Firepower
Mods new tank traks.png
Tracks
Research:
20 000 Rp icon.png
Cost:
18 000 Sl icon.png
330 Ge icon.png
Mods new tank suspension.png
Suspension
Research:
18 000 Rp icon.png
Cost:
16 000 Sl icon.png
300 Ge icon.png
Mods new tank break.png
Brake System
Research:
18 000 Rp icon.png
Cost:
16 000 Sl icon.png
300 Ge icon.png
Mods new tank filter.png
Filters
Research:
25 000 Rp icon.png
Cost:
22 000 Sl icon.png
420 Ge icon.png
Mods new tank transmission.png
Transmission
Research:
27 000 Rp icon.png
Cost:
24 000 Sl icon.png
450 Ge icon.png
Mods new tank engine.png
Engine
Research:
27 000 Rp icon.png
Cost:
24 000 Sl icon.png
450 Ge icon.png
Mods tank tool kit.png
Parts
Research:
6 000 Rp icon.png
Cost:
18 000 Sl icon.png
330 Ge icon.png
Mods extinguisher.png
FPE
Research:
5 400 Rp icon.png
Cost:
16 000 Sl icon.png
300 Ge icon.png
Mods tank reinforcement ussr.png
Crew Replenishment
Research:
25 000 Rp icon.png
Cost:
22 000 Sl icon.png
420 Ge icon.png
Mods engine smoke screen system.png
ESS
Research:
27 000 Rp icon.png
Cost:
24 000 Sl icon.png
450 Ge icon.png
Mods tank ammo.png
100mm_BR412D_ammo_pack
Research:
20 000 Rp icon.png
Cost:
18 000 Sl icon.png
330 Ge icon.png
Mod arrow 0.png
Mods new tank horizontal aiming.png
Horizontal Drive
Research:
20 000 Rp icon.png
Cost:
18 000 Sl icon.png
330 Ge icon.png
Mods night vision device.png
NVD
Research:
20 000 Rp icon.png
Cost:
18 000 Sl icon.png
330 Ge icon.png
Mods tank ammo.png
100mm_3BK25_ammo_pack
Research:
18 000 Rp icon.png
Cost:
16 000 Sl icon.png
300 Ge icon.png
Mods tank cannon.png
Adjustment of Fire
Research:
18 000 Rp icon.png
Cost:
16 000 Sl icon.png
300 Ge icon.png
Mods airstrike.png
Airstrike
Research:
18 000 Rp icon.png
Cost:
16 000 Sl icon.png
300 Ge icon.png
Mods new tank vertical aiming.png
Elevation Mechanism
Research:
25 000 Rp icon.png
Cost:
22 000 Sl icon.png
420 Ge icon.png
Mods smoke screen.png
Smoke grenade
Research:
25 000 Rp icon.png
Cost:
22 000 Sl icon.png
420 Ge icon.png
Mods tank laser rangefinder.png
Laser rangefinder
Research:
25 000 Rp icon.png
Cost:
22 000 Sl icon.png
420 Ge icon.png
Mods art support.png
Artillery Support
Research:
27 000 Rp icon.png
Cost:
24 000 Sl icon.png
450 Ge icon.png
Mods scouting.png
Improved optics
Research:
27 000 Rp icon.png
Cost:
24 000 Sl icon.png
450 Ge icon.png
Mods tank ammo.png
100mm_ussr_Smoke_ammo_pack
Research:
27 000 Rp icon.png
Cost:
24 000 Sl icon.png
450 Ge icon.png

Armaments

Laser rangefinder
Reduces the error and increases the maximum measurable distance of the rangefinder
Night vision device
Improves visibility by enhancing natural light or active illumination.

Main armament

100 mm 2А48 cannon
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
Ammunition40 rounds
First-order12 rounds
Reload6.0 s
Vertical guidance-4° / 17°
Main article: 2A48 (100 mm)
The Object 685 has the same ballistics as the D-10T2S 100mm cannon even sharing the same ammunition. Thus, the use of the gun should be the same as the T-55A. At 8.7, the gun is capable of destroying all enemy vehicles from the front (with exception of the Maus glacis) with is powerful dart. Despite not having the most powerful dart at the battle-rating, the 6.0 second reload of the auto loader makes the Object 685 a formidable quick firing tank, capable of destroying multiple enemies with relative speed.

Important: in order to let the auto loader load, the gunner must be alive

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 26.4 32.0 35.4 37.7 6.00 6.00 6.00 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
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 0.05 0.1 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 0.1 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

Ammo racks of the Object 685
Full
ammo
1st
rack empty
2nd
rack empty
3rd
rack empty
4th
rack empty
5th
rack empty
6th
rack empty
Visual
discrepancy
40 29 (+11) 21 (+19) 17 (+23) 13 (+27) (+33) (+39) No
  • Racks 5 and 6 are first-stage ammo racks

Machine guns

Ammunition2 000 rounds
Belt capacity250 rounds
Reload8.0 s
Fire rate600 shots/min
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.

Pros and cons

Pros:

  • 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

Cons:

  • Thin armour
  • Poor gun depression and elevation
  • 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

In the 1970's, the Russian Ministry of Defense opted to create a replacement for the PT-76, the main to contestants being the PT-85 (also known as Object 906) and the Object 685. It was tested but did not enter service or combat. It featured components that were later used for multiple vehicles, this being the Object 688 (which ended being the BMP-2), BMD-3 and 2S25 Sprut-SD (based on BMD-3). It was made for airborne units to maintain the armored section of airborne units, at the time those being PT-76, BMD-1 and ASU-85. It featured a greater weight than the PT-76 due to the size and main gun but feautred a more compact suspension due to being a telescopic hydraulic shock absorbers and suspension.

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


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 TD · BT-7 (F-32) · BT-7M
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