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Strv fm/21

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Strv fm/21

AnnoS05_Strv_M21_29.png
Battle Tier
1234567891011
Overview
Mouse over "
Well, the ones further down, of course.
" for more information
[Client Values; Actual values in
Specifically, the mismatch in crew values caused by commander's 10% crew skill bonus. Outside of a crew of 1 commander only, 100% crew is a fiction. The client values, given for 100% crew, will normally be taken into battle with 110% crew skill members aside from specific functions, causing their actual performance to deviate from the expected client value. These differences are taken into account in tooltip boxes.
]
0  Credits Cost
130130 HP Hit Points
9/109.02/10 t Weight Limit
Crew
  1. Commander (Gunner)
  2. Driver
  3. Loader
  4. Radio Operator
Mobility
5555 hp Engine Power
25/14 km/h Speed Limit
3535 deg/s Traverse
6.116.1 hp/t Power/Wt Ratio
NoNo Pivot
Armor
14/14/14 mm Hull Armor
14/14/1414/14/14 mm Turret Armor
Armament







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AP//HE







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AP//HE
Shells




















0/800/7




















2/400/2
Shell Cost
40/40/4512/12/16 HP Damage
33/44/1827/38/10 mm Penetration



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23.08 r/m 

Standard Gun

Reload Times
Nominal: 2.6 s
50% Crew: 3.22 s
75% Crew: 2.81 s
100% Crew: 2.49 s
Rammer: 2.24 s
Vents: 2.44 s
Both: 2.19 s
Both and BiA: 2.14 s
Both and Max Crew %: 2.06 s

See Crew, Consumables, or Equipment for more information.



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56.07 r/m 

Magazine-fed Gun

Burst Length: 2 rounds
Magazine Size: 10 rounds
Cycle Time: 0.3 s
Magazine Reload Times
Nominal: 8 s
50% Crew: 9.91 s
75% Crew: 8.65 s
100% Crew: 7.67 s
With Vents: 7.5 s
With Vents and BiA: 7.34 s

Click here for more information.
Rate of Fire






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960

Standard Gun

Using Shell Type 1 (40 Damage):


Theoretical Damage Per Minute
Nominal DPM: 960
50% Crew: 774.8
75% Crew: 887.6
100% Crew: 1001.2
100% Crew
Vents: 1023.6
Rammer: 1112.4
Both: 1137.6
Both and BiA: 1162.8
Both and Max Crew %: 1213.2

Advantageous Damage Per Minute
First-shot DPM: 1000
50% Crew: 814.8
75% Crew: 927.6
100% Crew: 1041.2
100% Crew
Rammer: 1152.4
Vents: 1063.6
Both: 1177.6
Both and BiA: 1202.8
Both and Max Crew %: 1253.2

See here, here, or here for more information.

Standard Gun

Using Shell Type 2 (40 Damage):


Theoretical Damage Per Minute
Nominal DPM: 960
50% Crew: 774.8
75% Crew: 887.6
100% Crew: 1001.2
100% Crew
Vents: 1023.6
Rammer: 1112.4
Both: 1137.6
Both and BiA: 1162.8
Both and Max Crew %: 1213.2

Advantageous Damage Per Minute
First-shot DPM: 1000
50% Crew: 814.8
75% Crew: 927.6
100% Crew: 1041.2
100% Crew
Rammer: 1152.4
Vents: 1063.6
Both: 1177.6
Both and BiA: 1202.8
Both and Max Crew %: 1253.2

See here, here, or here for more information.

Standard Gun

Using Shell Type 3 (45 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal DPM: 1080
50% Crew: 871.65
75% Crew: 998.55
100% Crew: 1126.35
100% Crew
Vents: 1151.55
Rammer: 1251.45
Both: 1279.8
Both and BiA: 1308.15
Both and Max Crew %: 1364.85

Advantageous Damage Per Minute
First-shot DPM: 1125
50% Crew: 916.65
75% Crew: 1043.55
100% Crew: 1171.35
100% Crew
Rammer: 1296.45
Vents: 1196.55
Both: 1324.8
Both and BiA: 1353.15
Both and Max Crew %: 1409.85

See here, here, or here for more information.






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99.36

Magazine-fed Gun

Using Shell Type 1 (12 Damage):


Theoretical Damage Per Minute
Nominal: 99.36
50% Crew: 82.08
75% Crew: 92.64
100% Crew: 103.08
With Vents: 101.28
With Vents and BiA: 103.32

Advantageous Damage Per Minute
Loaded-mag DPM: 205.32
50% Crew: 190.44
75% Crew: 199.56
100% Crew: 208.56
With Vents: 207
With Vents and BiA: 208.68

Click here for more information.

Magazine-fed Gun

Using Shell Type 2 (12 Damage):


Theoretical Damage Per Minute
Nominal: 99.36
50% Crew: 82.08
75% Crew: 92.64
100% Crew: 103.08
With Vents: 101.28
With Vents and BiA: 103.32

Advantageous Damage Per Minute
Loaded-mag DPM: 205.32
50% Crew: 190.44
75% Crew: 199.56
100% Crew: 208.56
With Vents: 207
With Vents and BiA: 208.68

Click here for more information.

Magazine-fed Gun

Using Shell Type 3 (16 Damage):
With wholly penetrating hits

Theoretical Damage Per Minute
Nominal: 132.48
50% Crew: 109.44
75% Crew: 123.52
100% Crew: 137.44
With Vents: 135.04
With Vents and BiA: 137.76

Advantageous Damage Per Minute
Loaded-mag DPM: 273.76
50% Crew: 253.92
75% Crew: 266.08
100% Crew: 278.08
With Vents: 276
With Vents and BiA: 278.24

Click here for more information.
Damage Per Minute


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0.44 m 

With 50% Crew: 0.56 m
With 75% Crew: 0.493 m
With 100% Crew: 0.44 m
With BiA: 0.43 m
With BiA and Vents: 0.422 m
Maximum possible: 0.404 m

For more details, see Crew


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0.5 m 

With 50% Crew: 0.636 m
With 75% Crew: 0.56 m
With 100% Crew: 0.5 m
With BiA: 0.489 m
With BiA and Vents: 0.479 m
Maximum possible: 0.46 m

For more details, see Crew
Accuracy


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1.9 s 

With 50% Crew: 2.418 s
With 75% Crew: 2.128 s
With 100% Crew: 1.9 s
With GLD: 1.727 s
With BiA: 1.857 s
With BiA and Vents: 1.822 s
With both and GLD: 1.656 s
Maximum possible: 1.588 s

For more details, see Crew or Equipment


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2.5 s 

With 50% Crew: 3.182 s
With 75% Crew: 2.8 s
With 100% Crew: 2.5 s
With GLD: 2.273 s
With BiA: 2.443 s
With BiA and Vents: 2.397 s
With both and GLD: 2.179 s
Maximum possible: 2.089 s

For more details, see Crew or Equipment
Aim time
2828 deg/s Turret Traverse
360° Gun Arc
-10°/+15°-10°/+15° Elevation Arc
100480 rounds Ammo Capacity
General
2020 % Chance of Fire






290 m 

With 50% Crew: 227.8 m
With 75% Crew: 259 m
With 100% Crew: 290 m
With Recon and Situational Awareness: 304.7 m
With Coated Optics: 319 m
With Binocular Telescope: 362.5 m
Maximum possible: 415.2 m

For more details, see Skills or Equipment






290 m 

With 50% Crew: 227.8 m
With 75% Crew: 259 m
With 100% Crew: 290 m
With Recon and Situational Awareness: 304.7 m
With Coated Optics: 319 m
With Binocular Telescope: 362.5 m
Maximum possible: 415.2 m

For more details, see Skills or Equipment
View Range


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265 m 

With 50% Crew: 213.9 m
With 75% Crew: 245 m
With 100% Crew: 276.4 m
With 100% Signal Boost: 318 m
When affected by 100% Relaying: 291.5 m
Maximum possible: 397.8 m

For more details, see Skills or Equipment


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265 m 

With 50% Crew: 213.9 m
With 75% Crew: 245 m
With 100% Crew: 276.4 m
With 100% Signal Boost: 318 m
When affected by 100% Relaying: 291.5 m
Maximum possible: 397.8 m

For more details, see Skills or Equipment
Signal Range
Values are Stock - click for Top


I

AnnoS05_Strv_M21_29.png

0

The Strv fm/21 is a Swedish tier 1 light tank.

The LK II tank was developed in Germany in 1918. The vehicle underwent trials, and the German army placed an order for 1,000 tanks. However, the order was not completed before the end of World War I. In 1920, Germany sold 10 LK II vehicles to Sweden, which entered service under the designation Stridsvagn fm/21. In 1929-1932, the vehicles underwent modernization and received more powerful engines and improved frontal armor. All modernized vehicles were designated Stridsvagn m/21-29 and were used for training purposes until 1940.

The Strv fm/21 leads to the Pvlvv fm/42, and the Strv m/38.

Modules / Available Equipment and Consumables

Modules

Ico_gun_alpha.png

Guns

Tier Gun Penetration
(mm)
Damage
(HP)
Rate of fire
(rounds/minute)
Dispersion
(m/100m)
Aiming time
(s)
Weight
(kg)
Price
(Credits)

II 20 mm akan m/Madsen 27/38/10 12/12/16 56.07 0.5 2.5 53 1940
I 37 mm kan m/Škoda 33/44/18 40/40/45 23.08 0.44 1.9 38 0

Ico_turret_alpha.png

Turrets

Tier Turret Turret Armor (front/sides/rear)
(mm)
Turret Traverse Speed
(deg/s)
View Range
(m)
Weight
(kg)
Price
(Credits)

I Strv fm/21 14/14/14 28 290 500 0

Ico_engine_alpha.png

Engines

Tier Engine Engine Power
(hp)
Chance of Fire on Impact
(%)
Weight
(kg)
Price
(Credits)

I Daimler-Benz m/1910 55 20 400 0

Ico_suspension_alpha.png

Suspensions

Tier Suspension Load Limit
(т)
Traverse Speed
(гр/сек)
Rmin Weight
(kg)
Price
(Credits)

I Strv fm/21 10 35 B/2 2500 0

Ico_radio_alpha.png

Radios

Tier Radio Signal Range
(м)
Weight
(kg)
Price
(Credits)

II 1 W Sv 265 34 0


Compatible Equipment

Light Spall Liner Camouflage Net Coated Optics Experimental Optics Wear-Resistant Gun Laying Drive Venting System Extended Spare Parts Kit Enhanced Gun Laying Drive Improved Ventilation Class 1 Binocular Telescope Toolbox 

Compatible Consumables

Automatic Fire Extinguisher Natural Cover Optical Calibration Aim Tuning Experienced Firefighters 100-octane Gasoline 105-octane Gasoline Manual Fire Extinguisher Vent Purge Large First Aid Kit Large Repair Kit Duty Comes First Shell Organizer Focus on Target Coffee with Cinnamon Buns Increased Focus Small First Aid Kit Small Repair Kit Gearbox Intricacy Steady Hand Pre-Battle Maintenance Combat Course 



Gallery

Historical Info

Sweden, due to its geographical location, has for a long time been able to stay out of European conflicts. But in the time of World War One, it became clear that Sweden could not rely on just its position, but it also would need a modern army. During this time, Sweden had close relations with Germany and in 1918, Swedish military attaché in Berlin was shown a knocked out British Mk IV tank. This would plant the seed of Swedish interest in tanks and as early as one year later, in 1919, attempts were made to purchase the British Whippet light tank. Due to the lack of money and enthusiasm from the army however, this led nowhere. Instead, negotiations were taken up with the Germans two years later, in 1921. Sweden was offered to secretly buy 10 German tanks, that had been produced, but never used because of the end of the war.


Here, the Swedish delegation is shown the Mk.IV tank

Swedish_Delegation_and_Mk_IV_Tank.jpg

These tanks were the “Leichter Kampfwagen II” light tanks, meant for easy mass production. The design borrowed heavily from British Whippet and French FT-17. The tank was based on a car chassis from Daimler, it had front mounted engine and rear mounted superstructure, armed with a cannon. Sweden was however not satisfied with the design and ordered several modifications to be made. Amongst the changes were the addition of fully traversable turret, as well as changes to the frontal hull. In late August 1921, the parts for the vehicles were imported from Germany as “tractors” and “boiler plates” to circumvent the Versailles treaty. Assembly began as soon as the parts were available and in 1922, all the vehicles were ready.

LKII

LK_II_Tank.jpg


This new tank was designated Pansarvagn försöksmodell/1922, but this was soon changed to Strv fm/21. The new tank was the first armored vehicle in Sweden. It had an unusual layout with the engine in the front and the turret in the rear, it weighed 9 tons and was armed with an 8mm machinegun, it was powered by the Benz 1910 55hp engine.

After some rudimentary one month tests in 1922, the tanks were put in storage. It was not until Autumn 1923 that five of the most reliable tanks would see action again. They were shipped across the country to a military exercise in Skåne, where they took part in a simulated attack. Here, the tanks were used in the support of Swedish infantry and because so few people knew of their existence, the exercise was a huge success. During late 1923 and 1924, the tanks were disassembled for the hardening of their armour plates, which took place at the navy shipbuilding yard in Stockholm.

Strv fm/21 on military exercise

Strv_fm_21_on_military_exercise.jpg

From 1924 to 1927, the tanks took part in series of tests and experiments. Among these was the experimental fitting of a radio receiver on tank number 5 and radio transmitters on tanks 10 and 6. In 1923, Sweden had also purchased one surplus FT-17, that had been used in the war and was in bad condition. The vehicle was soon scrapped, but its 37mm gun remained and was tested on one of the Strv m/21. The gun would eventually end up on an armored car in 1926. During this time, there were also several interesting tests with camouflage. Originally the tank had been painted in field gray, but now, 2 variants of winter camouflage were tested and during summer, the tank was covered with a three color green, brown and yellow pattern with black lines in-between, shared with the Pbil fm/26 armored car. As the testing continued, the lack of spare parts started to become a problem and even though some of the replacement suspension parts were now being produced, tanks number 1, 3, 4, 8 and 9 still had to be stripped for parts. It was not until 1927 the parts needed to keep all the tanks in running condition were delivered.

Strv fm/21 in winter camoflauge

Strv_fm_21_in_winter_camoflauge.jpg

Soon it became clear that the Strv m/21 was growing increasingly obsolete and in 1928, a project was started to develop the new Swedish tank. This resulted in the purchase of a Renault NC-27, which was deemed unsuitable for Swedish conditions. Today, this is the only NC-27 remaining in the world and it can be seen at the Arsenalen museum. Instead of purchasing the French tank, it was decided to upgrade the Strv fm/21. In 1929, the schematics for a slightly improved fm/21 called Strv m/21-29 were ready. Changes were made to the engine, which was replaced by a Swedish Scania-Vabis 1544 85hp engine, and the tank recieved electric lighting. Two of these tanks were ordered and in 1930, they were finished. During the same time, one of the Strv fm/21 was being tested with a 37mm Škoda infantry gun, but the tests were unsuccessful. Between 1931 and 1934, three more Strv fm/21 were modernized to Strv m/21-29 by the Landsverk company as training vehicles, until new tanks could be delivered. It was not until 1938 that the Strv m/21-29 was retired from service with the purchase of the Czech ČKD AH-IV tankette.

Strv fm/21 being rebuilt to Strv m/21-29 at Landsverk in 1934

Strv_fm_21_being_rebuilt_to_Strv_m_21-29_at_Landsverk_in_1934.jpg

Strv fm/28, the Swedish Renault NC-27

Strv_fm_28,_the_Swedish_Renault_NC-27.jpg

Today, three examples of the Strv m/21-29 remain – one in the Munster museum, and the final two are in the Strängnäs/Arsenalen museum, one of these is under restoration to driveable condition.


Historical Gallery

Historical Accuracy Errata

The following are consensus errors or inconsistencies which have been identified with the configuration of the vehicle in question and conflict with information available on the public record. The causes for these divergences in the game are normally not disclosed and may be rooted in game balance.

Its maximum speed of real life vehicle is only 16 KM/H. But for making this vehicle not underpowered from its very low speed in same tier, Wargaming decided to increased this vehicle speed to 25 KM/H which is on par with most of tier 1.


Sources and External Links

Sweden
Light Tanks IStrv fm/21 IIStrv m/38 IIL-60 IIIStrv m/40L
Medium Tanks IVLago VStrv m/42 VIStrv m/42-57 Alt A.2 VIStrv 74 VIILeo VIIIPrimo Victoria
Heavy Tanks VIIIEmil I IXEmil II XKranvagn
Tank Destroyers IIPvlvv fm/42 IIIIkv 72 IVSav m/43 VIkv 103 VIIkv 65 Alt II VIIIkv 90 Typ B VIIIUDES 03 VIIIStrv S1 IXStrv 103-0 XStrv 103B
Self-Propelled Artillery
Light Tanks
USA IT1 Cunningham IIM2 Light Tank IIT1E6 IIT2 Light Tank IIT7 Combat Car IIIM22 Locust IIIM3 Stuart IVM5 Stuart VM24 Chaffee VM7 VIT21 VIT37 VIIT71 CMCD VIIT71 DA VIIIM41 Walker Bulldog IXT49 XXM551 Sheridan
UK IICruiser Mk. I IIM2 IICruiser Mk. III IILight Mk. VIC IIIStuart I-IV IIICruiser Mk. IV IIICruiser Mk. II IVValentine IVCovenanter
Germany ILeichttraktor IIPz.Kpfw. II Ausf. D IIPz.Kpfw. 38H 735 (f) IIPz.Kpfw. 35 (t) IIPz.Kpfw. I IIPz.Kpfw. II III43 M. Toldi III IIIPz.Kpfw. 38 (t) IIIPz.Kpfw. III Ausf. E IIIPz.Kpfw. II Ausf. J IIIPz.Kpfw. I Ausf. C IIIPz.Kpfw. II Ausf. G IIIPz.Kpfw. T 15 IVPz.Kpfw. 38 (t) n.A. IVPz.Kpfw. II Luchs VVK 16.02 Leopard VIVK 28.01 VIIAufklärungspanzer Panther VIISpähpanzer SP I C VIIIleKpz M 41 90 mm GF VIIIHWK 12 IXSpähpanzer Ru 251 XRheinmetall Panzerwagen
France IRenault FT IID1 IIFCM 36 IIRenault R35 IIHotchkiss H35 IIIAMX 38 IVAMX 40 VAMX ELC bis VIAMX 12 t VIIAMX 13 75 VIIAMX 13 57 GF VIIIBat.-Châtillon 12 t IXAMX 13 90 XAMX 13 105
USSR IMS-1 IIBT-2 IIT-45 IIT-26 IIT-60 IITetrarch IIIBT-7 IIIBT-SV IIILTP IIIM3 Light IIIBT-7 artillery IIIT-127 IIIT-46 IIIT-70 IVA-20 IVT-80 IVValentine II VT-50 VIMT-25 VIILTG VIIILTTB IXT-54 ltwt. XT-100 LT
China IRenault NC-31 IIVickers Mk. E Type B IIIType 2597 Chi-Ha IVM5A1 Stuart VI59-16 VIType 64 VIIType 62 VIIWZ-131 VIIIWZ-132 IXWZ-132A XWZ-132-1
Japan IRenault Otsu IIType 95 Ha-Go IIType 97 Te-Ke IIIType 98 Ke-Ni IVType 5 Ke-Ho
Czechoslovakia IKolohousenka IILT vz. 35 IIILT vz. 38
Sweden IStrv fm/21 IIStrv m/38 IIL-60 IIIStrv m/40L
Poland