Sd.Kfz.251/21

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Rank VI USA | Premium | Golden Eagles
A-10A Thunderbolt (Early)
This page is about the German SPAA Sd.Kfz.251/21. For other versions, see Sd.Kfz.251 (Family).
Sd.Kfz.251/21
germ_sdkfz_251_21.png
GarageImage Sd.Kfz.251-21.jpg
ArtImage Sd.Kfz.251-21.png
Sd.Kfz.251/21
AB RB SB
3.3 3.3 3.3
Class:
Research:14 000 Specs-Card-Exp.png
Purchase:55 000 Specs-Card-Lion.png
Show in game

Description

The m.Schütz.Pz.Wg. (Sd.Kfz.251/21) is a rank II German SPAA with a battle rating of 3.3 (AB/RB/SB). It was introduced in Update "Hot Tracks".

General info

Survivability and armour

Armourfront / side / back
Hull14 / 8 / 8
Turret14 / 14 / 0
Crew4 people
Visibility88 %

Armour is practically nonexistent with this vehicle at only 14 mm maximum. Notable weak spots are between the gunner and driver section, where the ammunition is stored. Four crew members are used with operating this vehicle, a driver, commander, loader, and gunner. It is typical for such a lightly armoured vehicle as this to stay behind in the spawn area, keeping an eye out for planes. Planes are usually an easy target to take down with your rapid firing 15 mm machine guns, so long as you don't use H-Pzgr, which will most often over-penetrate and cause less damage.

Armour type:

  • Rolled homogeneous armour (hull, gun shield)
  • Wheel (front tires)
Armour Front (Slope angle) Sides Rear Roof
Hull 14.5 mm (20°) Engine compartment
14.5 mm (29°) Driver cabin
8 mm (30°) Roof panel
8 mm (41°) Lower glacis
8 mm (41°) Top - Engine
8 mm (35°) Top - Crew compartment
8 mm (30°) Top - Roof panel
8 mm (19°) Bottom - Engine
8 mm (34°) Bottom - Crew compartment
8 mm + 8 mm (34°) Storage bins
8 mm Bottom - Undercarriage
8 mm (30°)
5.5 mm (41°) Lower glacis
8 mm (8°) Engine compartment
5.5 mm Driver compartment
Gun shield 14.5 mm (33°) 14.5 mm (13°) N/A

Notes:

  • Suspension wheels and tracks are 15 mm thick while torsion bars are 10 mm thick.
  • Wheels are 10 mm thick and mudguards are 5 mm thick.
  • The belly armour is 5.5 mm thick.

Mobility

Speedforward / back
AB57 / 12 km/h
RB and SB53 / 11 km/h
Number of gears8 forward
2 back
Weight8.0 t
Engine power
AB191 hp
RB and SB100 hp
Power-to-weight ratio
AB23.9 hp/t
RB and SB12.5 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 57 12 8 142 191 17.75 23.88
Realistic 53 11 88 100 11 12.5

Modifications and economy

Repair costBasic → Reference
AB880 → 1 132 Sl icon.png
RB820 → 1 055 Sl icon.png
SB1 350 → 1 737 Sl icon.png
Total cost of modifications13 860 Rp icon.png
32 700 Sl icon.png
Talisman cost860 Ge icon.png
Crew training16 000 Sl icon.png
Experts55 000 Sl icon.png
Aces270 Ge icon.png
Research Aces250 000 Rp icon.png
Reward for battleAB / RB / SB
50 / 70 / 90 % Sl icon.png
130 / 130 / 130 % Rp icon.png
Modifications
Mobility Protection Firepower
Mods new tank traks.png
Tracks
Research:
690 Rp icon.png
Cost:
1 600 Sl icon.png
90 Ge icon.png
Mods new tank suspension.png
Suspension
Research:
620 Rp icon.png
Cost:
1 500 Sl icon.png
80 Ge icon.png
Mods new tank break.png
Brake System
Research:
620 Rp icon.png
Cost:
1 500 Sl icon.png
80 Ge icon.png
Mods new tank filter.png
Filters
Research:
1 200 Rp icon.png
Cost:
2 800 Sl icon.png
160 Ge icon.png
Mods new tank transmission.png
Transmission
Research:
1 100 Rp icon.png
Cost:
2 600 Sl icon.png
140 Ge icon.png
Mods new tank engine.png
Engine
Research:
1 100 Rp icon.png
Cost:
2 600 Sl icon.png
140 Ge icon.png
Mods tank tool kit.png
Parts
Research:
690 Rp icon.png
Cost:
1 600 Sl icon.png
90 Ge icon.png
Mods extinguisher.png
FPE
Research:
620 Rp icon.png
Cost:
1 500 Sl icon.png
80 Ge icon.png
Mods tank reinforcement ger.png
Crew Replenishment
Research:
1 200 Rp icon.png
Cost:
2 800 Sl icon.png
160 Ge icon.png
Mods new tank horizontal aiming.png
Horizontal Drive
Research:
690 Rp icon.png
Cost:
1 600 Sl icon.png
90 Ge icon.png
Mods tank ammo.png
15mm_ger_he_ammo_pack
Research:
690 Rp icon.png
Cost:
1 600 Sl icon.png
90 Ge icon.png
Mods tank cannon.png
Adjustment of Fire
Research:
620 Rp icon.png
Cost:
1 500 Sl icon.png
80 Ge icon.png
Mods tank ammo.png
15mm_ger_ap_ammo_pack
Research:
620 Rp icon.png
Cost:
1 500 Sl icon.png
80 Ge icon.png
Mods new tank vertical aiming.png
Elevation Mechanism
Research:
1 200 Rp icon.png
Cost:
2 800 Sl icon.png
160 Ge icon.png
Mods art support.png
Artillery Support
Research:
1 100 Rp icon.png
Cost:
2 600 Sl icon.png
140 Ge icon.png
Mods tank ammo.png
15mm_ger_apcr_ammo_pack
Research:
1 100 Rp icon.png
Cost:
2 600 Sl icon.png
140 Ge icon.png

Armaments

Main armament

Ammunition2 000 rounds
Belt capacity250 rounds
Reloadbasic crew → aces
13.0 → 10.0 s
Fire rate700 shots/min
Vertical guidance-5° / 49°
Ammunition1 000 rounds
Belt capacity500 rounds
Reloadbasic crew → aces
13.0 → 10.0 s
Fire rate700 shots/min
Vertical guidance-3° / 49°
Main article: MG 151 (15 mm)
15 mm MG 151 (x3) Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity (Belt) Fire rate Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Stock Full Expert Aced
Arcade 1 x 1,000 (500)
2 x 1,000 (250)
700 -5°/+49° ±180° N/A 52.8 73.1 88.8 98.2 104.5 18.20 16.10 14.84 14.00
Realistic 35.7 42.0 51.0 56.4 60.0

Ammunition

  • Pzgr. L'spur: AP-T · HEF-T
  • Brsprgr. L'spur: HEFI-T · HEFI-T · HEFI-T · AP-I
  • Pzbrgr.: AP-I · AP-I · AP-I · HEFI-T
  • H-Pzgr.: HVAP-T · AP-I · AP-I · AP-T
Penetration statistics
Belt Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
Universal 33 31 23 16 11 7
Brsprgr. L'spur 34 32 22 14 9 6
Pzbrgr. 34 32 22 14 9 6
H-Pzgr. 39 35 23 16 11 7

Ammo racks

Ammo racks of the Sd.Kfz.251/21
Full
ammo
Ammo
type
1st
rack empty
2nd
rack empty
Visual
discrepancy
8
3,000
Magazines
Rounds
(+6)
1,000
(+6)
1,000
Yes

Notes:

  • Ammunition is divided into 8 magazines.
  • The visual discrepancy concerns the number of magazines: 8 magazines can be fired but only 6 are modeled.

Usage in battles

Because the Sd.Kfz.251/21 lacks any sort of effective armour, it is highly recommended that you stay behind at spawn point, keeping an eye out for aircraft. It is ill-advised to try to engage ground vehicles as long as you haven't researched the H-Pzgr modification. This belt can penetrate 64 mm of armour at 10 m, so it is better to flank and shoot for lower side armour if possible. Beware of heavy tanks such as the KV-1: their minimum armour thickness is 75 mm, so that renders this heavy tank immune to your shots. Avoid if at all possible, but if you can't avoid, damage the cannon barrel and the tracks to give you time to escape.

In terms of engaging air, one should attempt to understand the importance of these principles; "Distance, lead, fire and hide". The Sd.Kfz.251/21 is such an under-armoured anti-air vehicle that it is recommended to only engage aircraft you are sure will be quickly dealt with, or incredibly close to you. Distance should be a large factor of how you pick targets, if you are not able to see the aircraft in full flying over a point or even your mini-map, do not engage at all. If the aircraft is near, continue on to the next step, leading the target. Leading is a vital learning curve of all beginning anti-air players and can often be quite difficult. The calibre of your main armament is a huge factor, as some former anti-air in the German tree are cannons that require more or less lead time. The Sd.Kfz.251/21 is one of the best vehicles to help teach how to lead aircraft, and it does not require excellent aim either, just aim for the important parts of an aircraft and spray and pray, but be conservative with your ammo and be sure not to jam your guns. Hiding after engaging is very important on the Sd.Kfz.251/21, as even a small spray of fire from an aircraft will render you useless. Hiding behind tall buildings and under tree cover is excellent after engaging, but be sure that you are not running into an enemy tank.

While playing with this vehicle, it is recommended to hide behind cover (a building, a cliff, or a rock formation) and always find the location of enemy aircraft by sound. When the enemy plane is in a dive, pull out of cover and hit your enemy with a fatal blow. The high muzzle velocity is helpful for predicting shots. At the same time, due to the limited elevation angle, it is recommended to find a place with a slope. A smart enemy will destroy you through a vertical dive, and the slope will supplement your elevation angle to help you destroy the target.

Pros and cons

Pros:

  • Fast rate of fire
  • Three machine guns can make accurate aiming less important because of the large volume of fire
  • Has an dedicated anti tank belt, the H-Pzgr., which can go through most tanks from the side
  • Good top speed
  • Very fast turret traverse allows easy target acquisition on any target
  • Crew members are quite spread out, difficult for enemies to knock you out in a single shot without a chemical shell
  • Large amount of ammunition

Cons:

  • Armour is extremely poor, can be penetrated by heavy machine guns and can be easily destroyed by overpressure
  • Open topped, strafing planes can be devastating
  • Near non-existent gun depression
  • Gun elevation is quite poor for an anti-air vehicle
  • Reload time stock of 18.2 seconds can be dangerous
  • Acceleration is mediocre at best
  • Heavy calibre machine guns lack stopping power compared to the previous 20 mm and 37 mm cannons
  • Large ammo cans can cause ammo racking to be very common from ground targets

History

Devblog

By 1942, German engineers recognized the need of the Wehrmacht for a light SPAAG to provide cover for frontline troops against low flying aircraft and set about developing a suitable vehicle on the chassis of available halftrack designs. In 1943, this need became even more emphasized with limited German production capacities being unable to produce the required number of Flakpanzers that the Wehrmacht had been requesting.

Subsequently, German engineers decided to outfit the widely used Sd.Kfz. 251 halftrack with a three-barrel AA mount, initially equipped with 15 mm, later with 20 mm cannons, in order to meet the Wehrmacht's demand. The new modification became known as the Sd.Kfz 251/21 and went into production in 1944.

By the time the Sd.Kfz. 251/21 entered service, troops more widely used it as a support vehicle in the late stages of the war, with the vehicle performing well in this role. Nonetheless, over 380 units of the Sd.Kfz. 251/21 were produced until the end of the war, many of which through conversion of older modifications.

Media

Skins
Images
Videos

See also

Other vehicles of similar configuration and role

External links


Hannoversche Maschinenbau AG (Hanomag)
Sd.Kfz.251  Sd.Kfz.251/10 · Sd.Kfz.251/21 · Sd.Kfz.251/22

Germany anti-aircraft vehicles
Half-track  Sd.Kfz.251/21 · Sd.Kfz. 6/2
Flakpanzer IV  Wirbelwind · Ostwind · Ostwind II · Kugelblitz
Other Flakpanzers  Flakpanzer I · Flakpanzer 38 · Flakpanzer 341
Wiesel AWC  Wiesel 1A4 · Ozelot
Radar SPAAG  Gepard
Missile SPAA  FlaRakPz 1 · FlaRakRad