Strv 81

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Stridsvagn 81
General characteristics
4 peopleCrew
119 %Visibility
front / side / backArmour
76 / 50 / 38Hull
152 / 89 / 89Turret
50.8 tWeight
1240 hp650 hpEngine power
24.4 hp/t12.8 hp/tPower-to-weight ratio
39 km/h forward
14 km/h back
35 km/h forward
13 km/h back
84 mm kan Strv 81Main weapon
65 roundsAmmunition
8 roundsFirst-order
6.3 / 8.1 sReload
-10° / 20°Vertical guidance
8 mm ksp m/39B machine gunCoaxial weapon
3600 roundsAmmunition
8 / 10.4 sReload
250 roundsBelt capacity
649 shots/minFire rate
78000 Rp icon.pngResearch
230000 Sl icon.pngPurchase
Sl icon.png12060 / 16317/10000 / 13530/8600 / 11635Repair
65000 Sl icon.pngCrew training
230000 Sl icon.pngExperts
990 Ge icon.pngAces
184 % Rp icon.pngReward for battle
180 % Sl icon.png150 % Sl icon.png140 % Sl icon.png


GarageImage Strv 81.jpg

The Stridsvagn 81 is a rank IV Swedish medium tank with a battle rating of 7.0 (AB/RB/SB). It was introduced in Update 1.97 "Viking Fury".

General info

Survivability and armour

Armour type:

  • Rolled homogeneous armour (Hull, Turret roof)
  • Cast homogeneous armour (Turret)
Armour Front Sides Roof
Hull 76.2 mm (58°) Front glacis

76.2 mm (47-48°) Lower glacis

50.8 (12°) + 6 mm 29 mm

8-14 mm Engine deck

Turret 152 mm (6-27°) Turret front

152 mm Gun mantlet

89 mm (5-12°) 50.8 mm Border of turret

29 mm Center of turret

Armour Front Sides and Rear
Cupola 152 mm 90 mm


Write about the mobility of the ground vehicle. Estimate the specific power and manoeuvrability, as well as the maximum speed forwards and backwards.

Game Mode Max Speed (km/h) Weight (tons) Engine power (horsepower) Power-to-weight ratio (hp/ton)
Forward Reverse Stock Upgraded Stock Upgraded
Arcade 39 14 50.8 1007 1240 19.82 24.41
Realistic 35 13 575 650 11.32 12.8


Main armament

Main article: Kan Strv 81 (84 mm)
84 mm Kan Strv 81 Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 65 -10°/+20° ±180° Two-plane 19.0 __._ __._ __._ __._ 8.1 _._ _._ _._
Realistic 11.9 __._ __._ __._ __._


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
slpprj APCBC 232 229 216 201 187 173
slpprj m/54 APDS 285 283 262 239 218 198
slsgr m/53 HE 15 15 15 15 15 15
Shell details
Ammunition Type of
Mass (kg)
Fuse delay
Fuse sensitivity
Explosive Mass
(TNT equivalent) (g)
0% 50% 100%
slpprj APCBC 1,000 9.1 N/A N/A N/A 48° 63° 71°
slpprj m/54 APDS 1,400 3.2 N/A N/A N/A 75° 78° 80°
slsgr m/53 HE 600 7.5 0.4 0.5 1,130 79° 80° 81°
Smoke shell characteristics
Ammunition Velocity
Mass (kg)
Screen radius
Screen deploy time
Screen hold time
Explosive Mass
(TNT equivalent) (g)
rökgr m/53 250 9.3 13 5 20 50

Ammo racks

rack empty
rack empty
rack empty
rack empty
rack empty
rack empty
65 59 (+6) 57 (+8) 55 (+10) 53 (+12) 33 (+32) 17 (+48) yes

Machine guns

Main article: Ksp m/39B (8 mm)
8 mm Ksp m/39B
Mount Capacity
(Belt capacity)
Rate of fire
Coaxial 3,600 (250) 648 N/A N/A

Usage in battles

The Strv 81 is an effective medium tank if played to its strengths. If one wants to keep it simple, just use the powerful gun to snipe from distance. More advanced tankers can utilize the not too impressive max speed (35 km/h (22mph)) to move with this medium tank into the flanks of enemy tanks (close to the border of a map) and search for positions like hills and ridges where one can make use of the amazing -10° gun depression to hide the vulnerable lower plate of this tank. Once in such a position, one should use the binoculars to scout for enemies without exposing the turret. If an enemy tank is spotted that could be a potential threat (dangerous tank / faced towards you) pop out a little bit and start to take out the enemies gunner/cannon barrel/cannon breech to prevent him from returning fire. Now utilize the quick reload to take out one crew member after the other to finish your opponent. If an enemy is spotted who is exposing their side or even the rear while not aiming towards you, shoot the engine first to immobilize and possibly even ignite the enemy tank, preventing him to take cover. The next shots should again disable the gun of the enemy, now finish your prey by shooting all crew members or if you feel lucky shoot an ammo rack.

The best choice to pierce enemy tanks is obviously the slpprj m/54 (APDS) although it is quite expensive in terms of Silver Lions. The slpprj (APCBC) works in most situation as well but lacks penetration compared to the slpprj m/54 APDS shot. The amazing penetration characteristics of this APDS shot enables this gun to pierce front plates of all Panther models (apart from the Panther II) to ranges up to 2000 m. T-44s and Panther IIs front plates can be penetrated to ranges up to almost 1000 m. Keep in mind though that the front plate of the T-44 is angled at 60°, so it bounces even this powerful APDS shot quite often. Even the front plate of the mighty Tiger II is not able to stop this APDS shot if not angled and the range is shorter than 100 m.

In a head to head situation with an enemy tank approaching try to angle the centurion not more than 5° degrees to either side since the side armour is quite weak (50.8 mm), try to hide your lower front plate which is a massive weak spot, while reloading turn the turret 10° to the right to maximize chances of bouncing shots (right side of the turret front has some extra armour) and keeping the gunner alive.


Tier Mobility Protection Firepower
I Tracks Parts Horizontal Drive
II Suspension Brake System FPE Adjustment of Fire slpprj m/54
III Filters Crew Replenishment Elevation Mechanism Smoke grenade
IV Transmission Engine Artillery Support rökgr m/53

Pros and cons


  • Powerful and high penetrating gun, stock round is adequate and APDS can punch through anything it will face.
  • Has a base reload time of 8.1 seconds, which can be lowered further into around 7.4 seconds (which is on average 2 seconds faster than its competitors).
  • Excellent gun depression and elevation.
  • Extremely strong gun mantlet.
  • Somewhat bouncy armour.
  • Gunner is on the right side of the tank.
  • Neutral steering, can turn on the spot without having to switch into gear 1.
  • Good maneuverability.
  • Good reverse speed.
  • Gun stabilizer.


  • Low top speed.
  • Ammo rack in the front, penetration through the lower glacis will likely ends up destroying or detonating the ammo rack.
  • Top armor covering the engine compartments is 8mm
  • APDS shot causes only punctual damage (aim carefully).
  • No explosive filler on any AP shells.
  • Weak side armour, do not angle the hull to much.
  • High repair cost


Describe the history of the creation and combat usage of the vehicle in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/History" (example: and add a link to it here using the main template. Be sure to reference text and sources by using <ref></ref>, as well as adding them at the end of the article with <references />. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under === In-game description ===, also if applicable).


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

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • encyclopedia page on the tank;
  • other literature.

Sweden medium tanks
  Lago I · Strv m/42 EH · Strv m/42 DT · Strv 81
  Strv 101 · Strv 103-0 · Strv 103A · Strv 103С · Strv 104 · Strv 121 · Strv 122