WZ551 (ZU-23-2)

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WZ551 (ZU-23-2)

Flag_of_Ethiopia.svg

IMG_5840

TL;DR: Ethiopian modification of a Chinese APC with turreted dual 23mm cannons

History
Ethiopia has long been an ally of the USSR and China, beginning with the establishment of a Marxist-Leninist state (the Derg) in 1974 following the toppling of the Ethiopian Empire. It has been provided with weapons from these countries for decades – one such weapon system is the ZU-23-2 (ZU = Zenitnaya Ustanovka, anti-aircraft mount), a dual 23mm towed anti-aircraft cannon. This weapon entered service with the Soviet Union in 1960, and has been subsequently exported across much of the globe.

No information seems to be available regarding Ethiopia’s imports of ZU-23s, other than deliveries of around 60 ZSU-23-4s completed in 1982. However, the ZU-23s are one of Ethiopia’s most numerous anti-aircraft cannons, and appear to have seen extensive service. A number of vehicles have been fitted with this weapon system, including trucks like the Ural 4320 or Ural 375D.

IMG_5795

  • Ethiopian Ural 4320 with ZU-23-2

In 2014, China delivered 20 WZ551 APCs to Ethiopia, specifically the ZSL92A variant, which normally houses a one-man turret, fitted with a single 12.7mm QJC88 machine gun. Beginning in 2016, Ethiopia has focused on upgrading its military capabilities, to improve its combat readiness. This has resulted in a number of new vehicle acquisitions, but also upgrades to pre-existing vehicles, including this 23mm-armed WZ551, and others, such as a 122mm D-30-armed WZ551.

The ZU-23-2-armed WZ551 were first spotted during a parade on October 26th, 2023. At least 9 of them have been converted to this role – out of the original 20 acquired from China, 4 have been captured by the Tigray Defence Forces and 4 have been turned into SPGs with 122mm cannons, leaving only 3 IFVs/APCs (if there is no overlap with the SPG/SPAA variants). They have been fitted with an Ethiopian designed turret, and have since been seen a few times in training exercises. Their designation in Ethiopian service is (to my knowledge) unknown.

  • Two WZ551 (ZU-23-2) alongside two ZSD89 (ZU-23-2)

Characteristics
The turret is an Ethiopian construction, and rather crude, effectively just a box around the guns, with a curved front. The sides are two separate armour plates joined together, and the rear is one piece. The armour thickness is unknown but presumably thin (<10mm), and only able to resist small arms fire.

The 23mm cannons fire at 400rpm each, and have one 50 round belt each. They can fire AP rounds at 970 m/s, with a armour penetration of 51mm at 10m (in-game), as well as HEFI rounds. These guns are on a few vehicles in-game, like the Soviet ZSU-23-4 (with 4 cannons), and the South African Bosvark.

The WZ551 has a 320hp engine, giving the vehicle a power-to-weight ratio of 21.5hp/t (just the hull), and a top speed of 90km/h on land, and 8.5km/h in water. The vehicle has 10mm of frontal armour, 8mm on the sides, and 6mm on the rear. On standard WZ551 variants, the driver sits at the front, and the commander next to then. On this SPAA variant, the crew layout is unknown, but probably only has 3 – commander and driver in the hull, and a single gunner in the turret.

Conclusion
The WZ551 (ZU-23) is a unique APC-turned-SPAA and would fit best into the Chinese tree, around a BR of 5.7-6.0. It would play very similarly to the Bosvark which sits at 5.3, but with a bit more flexibility due to the turret and slightly better armour. It would easily fit as a tech-tree vehicle, but could also fit (perhaps better) as a premium or event vehicle considering it is not a Chinese development.

Specifications
Armament

  • 23mm ZU-23-2
    • API-T
      • 51mm at 0º at 10m
    • HEF-I
    • HEFI-T

Armour

  • Hull
    • Front - 10mm at 33º
    • Sides - 8mm at 25º
    • Rear - 6mm at 5º

Mobility

  • Speed
    • 90km/h on land
    • 8.5km/h in water
  • Weight
    • ~16t (Estimated)
  • Engine power
    • 320hp, ~20-21hp/t

Other

  • Crew
    • 3 (Commander, Driver, Gunner)

Images

Spoiler


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Sources

Spoiler

https://youtu.be/jJw14760P_Q?si=4DXKkjRyrwpPJp9G

SIPRI Arms Transfer Database

The Military Balance, Volume 124, 2024, Issue 1, Chapter Eight: Sub-Saharan Africa

ZSL92A | Weaponsystems.net

2 Likes

Same idea as with the tracked version. Would totally play either one. +1

3 Likes

+1. I believe this is more efficient than the ZSL92, so the BR would have to be around 6.7

1 Like

It has worse penetration (51mm vs 63mm) and is open-top, though, making it more vulnerable to not only strafing (although it’s not like the hull roof protects against much) but also tank machine guns. Those were my main considerations in suggesting a lower BR. It does have two cannons, so a rate of fire advantage by 300rpm, so maybe 6.3 is better.