Ikv 91

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RANK 4 FRANCE
Somua SM PACK
sw_ikv_91.png
GarageImage Ikv 91.jpg
Ikv 91
AB RB SB
6.7 6.7 6.7
Class:
Research:78 000 Specs-Card-Exp.png
Purchase:230 000 Specs-Card-Lion.png
Show in game

Description

The Infanterikanonvagn 91 is a rank IV Swedish light tank with a battle rating of 6.7 (AB/RB/SB). It was introduced in Update 1.97 "Viking Fury".

Besides its drawbacks, it is overall an excellent light tank, notably because of its excellent HEAT-FS shell but also because of its amphibious capabilities.

General info

Survivability and armour

Smoke grenades
Creation of a smoke screen in front of the vehicle
Hull break
Low structural strength makes the vehicle susceptible to serious damage
Armourfront / side / back
Hull12 / 12 / 8
Turret8 / 12 / 12
Crew4 people
Visibility84 %

As one would expect from a light tank, the Ikv 91 is very weakly armoured. The armour, both on the front and sides, protects from small arms (like British 7.92 mms for example) and most splash damage. However, while the front hull also protects against .50 cals, the turret can be penetrated, which can quickly lead to death as 3 out of the 4 crew members are in the turret.

The engine and transmission are located in the rear hull, meaning that shots to the front hull are unlikely to destroy them, and shots to the rear hull are unlikely to kill as the engine and transmission will absorb most of the damage - while the crew is not close enough to be hurt by the shrapnel.

Armour type:

Armour Front (Slope angle) Sides Rear Roof
Hull 12 mm (70°) Top
20 mm (30°) Bottom
4 mm (4°) Top
8 mm (0°) Bottom
8 mm (3°) Top
8 mm (20°) Bottom
8-12 mm
Turret 12 mm (11-33°) Turret front
8 mm (0-70°) Gun mantlet
12 mm (2-25°) 12 mm (0-29°) 12 mm
Cupola 12 mm 12 mm 12 mm 12 mm

Notes:

Mobility

Amphibious
The design allows you to swim and control movement in the water
Speedforward / back
AB73 / 13 km/h
RB and SB65 / 12 km/h
Number of gears6 forward
1 back
Weight16.3 t
Engine power
AB630 hp
RB and SB330 hp
Power-to-weight ratio
AB38.7 hp/t
RB and SB20.2 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 73 13 16.3 511 630 31.35 38.65
Realistic 65 12 292 330 17.91 20.25

While the Ikv 91 is slower than wheeled light tanks on road (58 km/h (36 mph) in RB/SB, 65 km/h (40 mph) in AB), it has very good mobility off-road and a good power-to-weight ratio (20.2 hp/t in RB/SB, 38.6 hp/t in AB), overall allowing it to take positions ahead of the enemy main forces and to relocate quickly.

Modifications and economy

Repair costBasic → Reference
AB5 300 → 7 780 Sl icon.png
RB6 900 → 10 129 Sl icon.png
SB5 900 → 8 661 Sl icon.png
Total cost of modifications71 400 Rp icon.png
113 200 Sl icon.png
Talisman cost1 900 Ge icon.png
Crew training65 000 Sl icon.png
Experts230 000 Sl icon.png
Aces990 Ge icon.png
Research Aces620 000 Rp icon.png
Reward for battleAB / RB / SB
110 / 150 / 180 % Sl icon.png
184 / 184 / 184 % Rp icon.png
Modifications
Mobility Protection Firepower
Mods new tank traks.png
Tracks
Research:
4 800 Rp icon.png
Cost:
7 600 Sl icon.png
240 Ge icon.png
Mods new tank suspension.png
Suspension
Research:
3 200 Rp icon.png
Cost:
5 100 Sl icon.png
160 Ge icon.png
Mods new tank break.png
Brake System
Research:
3 200 Rp icon.png
Cost:
5 100 Sl icon.png
160 Ge icon.png
Mods new tank filter.png
Filters
Research:
4 500 Rp icon.png
Cost:
7 100 Sl icon.png
220 Ge icon.png
Mods new tank transmission.png
Transmission
Research:
4 600 Rp icon.png
Cost:
7 300 Sl icon.png
230 Ge icon.png
Mods new tank engine.png
Engine
Research:
4 600 Rp icon.png
Cost:
7 300 Sl icon.png
230 Ge icon.png
Mods tank tool kit.png
Parts
Research:
4 800 Rp icon.png
Cost:
7 600 Sl icon.png
240 Ge icon.png
Mods extinguisher.png
FPE
Research:
3 200 Rp icon.png
Cost:
5 100 Sl icon.png
160 Ge icon.png
Mods tank reinforcement sw.png
Crew Replenishment
Research:
4 500 Rp icon.png
Cost:
7 100 Sl icon.png
220 Ge icon.png
Mods smoke screen.png
Smoke grenade
Research:
4 600 Rp icon.png
Cost:
7 300 Sl icon.png
230 Ge icon.png
Mods new tank horizontal aiming.png
Horizontal Drive
Research:
4 800 Rp icon.png
Cost:
7 600 Sl icon.png
240 Ge icon.png
Mods tank cannon.png
Adjustment of Fire
Research:
3 200 Rp icon.png
Cost:
5 100 Sl icon.png
160 Ge icon.png
Mods airstrike.png
Airstrike
Research:
3 200 Rp icon.png
Cost:
5 100 Sl icon.png
160 Ge icon.png
Mods new tank vertical aiming.png
Elevation Mechanism
Research:
4 500 Rp icon.png
Cost:
7 100 Sl icon.png
220 Ge icon.png
Mods scouting.png
Improved optics
Research:
4 500 Rp icon.png
Cost:
7 100 Sl icon.png
220 Ge icon.png
Mods art support.png
Artillery Support
Research:
4 600 Rp icon.png
Cost:
7 300 Sl icon.png
230 Ge icon.png
Mods tank laser rangefinder.png
Laser rangefinder
Research:
4 600 Rp icon.png
Cost:
7 300 Sl icon.png
230 Ge icon.png

Armaments

Laser rangefinder
Reduces the error and increases the maximum measurable distance of the rangefinder

Main armament

Ammunition59 rounds
First-order16 rounds
Reloadbasic crew → aces
7.8 → 6.0 s
Vertical guidance-10° / 15°
Main article: kan Ikv 91 (90 mm)

The Ikv 91 has for main armament a 90 mm gun able to use two shells: HEAT-FS and HE. All shells are unlocked from the beginning, even the excellent HEAT-FS with 400 mm of penetration and a whole 655 g TNT equivalent of explosive mass. The turret traverse speed is not the best for a light tank (18.8°/s in RB/SB and 35.4°/s in AB while the American M41A1 Walker Bulldog gets 33.3°/s in RB/SB and 63.7°/s in AB) but is above average at its BR and usually enough. The same goes for targeting the gun up or down.

The reload speed is faster than average, but quite a few tanks reload faster at this BR, notably light tanks (the BMP-1 for example). The reload speed is also dependent on the first-stage ammo stowage, meaning that it will get slower should one run out of first-stage ammo.

The slow speed of both HEAT-FS and HE is offset by the laser rangefinder, a rare feature for this BR, making the Ikv 91 effective at long-range engagements too.

90 mm kan Ikv 91 Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 59 -10°/+15° ±180° N/A 19.0 26.4 32.0 35.4 37.7 7.80 6.90 6.36 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
slpsgr m/72 HEATFS 400 400 400 400 400 400
slsgr m/72 HE 29 29 29 29 29 29
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%
slpsgr m/72 HEATFS 820 4.35 0.05 0.1 655 65° 72° 77°
slsgr m/72 HE 600 6.7 0 0.1 2,400 79° 80° 81°

Ammo racks

Full
ammo
1st
rack empty
2nd
rack empty
3rd
rack empty
4th
rack empty
5th
rack empty
6th
rack empty
Visual
discrepancy
59 __ (+__) __ (+__) __ (+__) __ (+__) __ (+__) __ (+__) __

A maximum of 59 shells for the main gun can be carried, although the high-effectiveness of the HEAT shells gives the possibility for players to only carry a fraction of that and still be able to take out several targets in one run. The first-stage ammo stowage is comprised of 16 shells all located next to the loader, the next 25 shells are located between the loader and the engine, and the last 18 shells are located in the front hull next to the driver.

Going with 16 shells is usually the best bet if one wants to lower the chances of getting its ammunition detonated as much as possible as they're all going to be at the same spot. Going with 20-25 shells is not much more dangerous as the 25 shells following the first-stage ammo are all located next to the engine, where other players do not usually shoot.

Machine guns

Ammunition2 000 rounds
Belt capacity250 rounds
Reloadbasic crew → aces
10.4 → 8.0 s
Fire rate649 shots/min
Ammunition2 250 rounds
Belt capacity250 rounds
Reloadbasic crew → aces
10.4 → 8.0 s
Fire rate649 shots/min
Main article: ksp m/39B (8 mm)

The Ikv 91 comes with two 8 mm machine guns: A pintle-mounted machine gun and a coaxial machine gun next to the main gun. The machine guns have a relatively slow fire-rate but are still effective at taking out exposed crew members of enemy vehicles.

8 mm ksp m/39B
Mount Capacity (Belt) Fire rate Vertical Horizontal
Pintle 2,000 (250) 649 __° __°
Coaxial 2,250 (250) 649 N/A N/A

Usage in battles

Thanks to its excellent HEAT-FS shell, the Ikv 91 can engage any target, even when up-tiered. However, a margin of caution is still needed when going against tanks that have .50 cals, as .50 cals can go through the sides and turret to then kill the gunner, loader and commander. The good mobility makes it able to go from one objective to another very quickly, and its amphibious ability gives another way to flank and makes it able to reach positions otherwise inaccessible. The laser rangefinder also gives it the possibility to quickly make accurate long-range shots. The -10° depression also allows it to take firing positions that some other tanks cannot (particularly the Russians that usually only have -5°).

Overall, the Ikv 91 can be played at mostly any range and can outmanoeuvre most of the tanks it encounters. Although it cannot attract too much attention as its particularly weak to aircraft, but is able to use smoke shells to hide in cases like these.

Pros and cons

Pros:

  • Solid mobility, especially off-road
  • Amphibious
  • Excellent HEAT-FS shell that is unlocked from the beginning
  • Laser rangefinder, a feature unheard of at 6.7

Cons:

  • The armour does not protect against .50 cals everywhere, notably the turret
  • No stabilizer
  • No night-vision
  • HEAT-FS loses velocity very quickly, making long distance moving targets hard to hit, even when zeroed with the range finder

History

The Infanterikanonvagn 91, or Ikv 91, was a Cold War era design made in Sweden. Although it is practically a light tank, it was designed as an infantry support vehicle, similar in role to the Russian PT-76. It was designed by Hägglunds, and ordered by the Swedish military. Hägglunds had previously designed the Pbv 302, an armoured personnel carrier. When designing the Ikv 91, Hägglunds used many parts from the Pbv 302, in order to reduce costs and increase parts commonality. The design featured a lightweight, lightly armoured hull. The armament consisted of a 90 mm gun mounted in a turret. Secondary armament consisted of two low-calibre machine guns. The vehicle was powered by a Volvo Penta model TD 120 A diesel engine producing 330 hp. One of the requirements for the design was amphibious capability, a necessity in certain parts of Sweden. As such, it was fully amphibious with little preparation. The prototype was completed in 1969, but production wasn't authorized until 1975. 212 Ikv 91 were produced, and were given to infantry brigades, for use as tank destroyers. The Ikv 91 served until the early 2000's, replaced by newer designs such as the Strf 90 and Strv 121/Strv 122. In 1983, a prototype for an improved Ikv 91 model was created. This prototype mounted a 105 mm gun, instead of the 90 mm gun. It was marketed for export, but was never ordered It is often known as the Ikv 105.

Media

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

Bibliography


Sweden light tanks
  Strv m/31 · Strv m/38 · Strv m/39 · Strv m/39 TD · Strv m/40L · Strv m/41 S-II
  CV 90105 TML · CV 90120 · Ikv 91 · Strv 74 · Strf 9040C · Strf 9040 BILL