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This page is about the Italian SPAA SIDAM 25. For the version equipped with Mistral SATCP missiles, see SIDAM 25 (Mistral). For other versions, see M113 (Family).
GarageImage SIDAM 25.jpg
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The SIDAM 25 is an Italian anti-air platform developed by OTO Melara during the Cold War. Based on the M113A1 platform, the SIDAM 25 was primarily designed to fulfill the short-range air defense needs of the Italian army. The Italian army initially showed interest in the OTOMATIC anti-air platform; however, due to factors such as cost, the SIDAM 25 was chosen instead. One of its main drawbacks was that it lacked a radar system unlike other anti-air platforms of the era. A total of 275 systems were ordered. In the late 2010s, the SIDAM 25 began to be phased out, with most units being used to arm the Freccia IFV with a 25 mm cannon.

Introduced in Update 1.85 "Supersonic", the SIDAM 25 is equipped with 4 x 25 mm Oerlikon KBA cannons able to fire both HEI-T* and APDS rounds. The high fire density of this SPAA allows it to destroy planes within seconds, often requiring only a few hits to bring down the target. The HEI-T rounds in the M792 belt contain a TNT equivalent of 54.4 grams in each projectile, with a high muzzle velocity of 1,100 m/s, making it easier to lead targets. However, the standard belts lack armour-penetrating rounds, so your maximum penetration remains at 3 mm until you unlock the M791 belt (APDS). Once the M791 belt is unlocked, defeating tanks becomes much easier, thanks to the 81 mm of penetration at 10 metres and a muzzle velocity of 1,345 m/s. The potential of the platform is however severely limited by the maximum capacity of 660 rounds (165 per gun). It is important to be very careful with your ammunition considering the fire rate and the small ammunition capacity, giving approximately 18 seconds of continuous fire. However, once your rounds hit their target, there is little that can survive. Helicopters and aircraft will be brought down with ease if you remain undetected. The platform's mobility is just sufficient to reach desired positions, but its large size makes it difficult to go unnoticed on the battlefield. The SIDAM 25 also lacks sufficient armour protection, as heavy machine guns can easily penetrate it. In conclusion, stay hidden and fire only when you see an opportunity to do so.

General info

Survivability and armour

Armourfront / side / back
Hull38 / 44 / 38
Turret38 / 25 / 25
Crew3 people
Visibility123 %

Armour type:

  • Aluminium Alloy 7039
  • Structural steel
Armour Front (Slope angle) Sides Rear Roof
Hull 38 mm (46°), 29 mm (46°) Front glacis
38 mm (25°) Lower glacis
44 mm Top
32 mm Bottom
38 mm (10°) 38 mm (89°) Front
38 mm (89°) Rear
Turret 38 mm (24°) Turret front
25 mm Gun mantlet
25 mm (0°) 25 mm 25 mm (89°)


  • Suspension wheels are 10 mm thick and tracks are 15 mm thick.


Speedforward / back
AB70 / 17 km/h
RB and SB65 / 15 km/h
Number of gears6 forward
2 back
Weight14.3 t
Engine power
AB404 hp
RB and SB212 hp
Power-to-weight ratio
AB28.3 hp/t
RB and SB14.8 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 70 17 14.3 301 404 21.05 28.25
Realistic 65 15 188 212 13.15 14.83

Modifications and economy

Repair costBasic → Reference
AB5 186 → 6 793 Sl icon.png
RB4 421 → 5 791 Sl icon.png
SB5 373 → 7 038 Sl icon.png
Total cost of modifications135 900 Rp icon.png
236 000 Sl icon.png
Talisman cost2 400 Ge icon.png
Crew training135 000 Sl icon.png
Experts470 000 Sl icon.png
Aces2 000 Ge icon.png
Research Aces890 000 Rp icon.png
Reward for battleAB / RB / SB
150 / 190 / 230 % Sl icon.png
214 / 214 / 214 % Rp icon.png
Mobility Protection Firepower
Mods new tank traks.png
10 000 Rp icon.png
16 000 Sl icon.png
370 Ge icon.png
Mods new tank suspension.png
8 400 Rp icon.png
13 000 Sl icon.png
310 Ge icon.png
Mods new tank break.png
Brake System
8 400 Rp icon.png
13 000 Sl icon.png
310 Ge icon.png
Mods new tank filter.png
9 300 Rp icon.png
15 000 Sl icon.png
350 Ge icon.png
Mods new tank transmission.png
12 000 Rp icon.png
19 000 Sl icon.png
450 Ge icon.png
Mods new tank engine.png
12 000 Rp icon.png
19 000 Sl icon.png
450 Ge icon.png
Mods tank tool kit.png
Improved Parts
3 000 Rp icon.png
16 000 Sl icon.png
370 Ge icon.png
Mods extinguisher.png
Improved FPE
2 500 Rp icon.png
13 000 Sl icon.png
310 Ge icon.png
Mods tank reinforcement it.png
Crew Replenishment
9 300 Rp icon.png
15 000 Sl icon.png
350 Ge icon.png
Mods new tank horizontal aiming.png
Horizontal Drive
10 000 Rp icon.png
16 000 Sl icon.png
370 Ge icon.png
Mods tank cannon.png
Adjustment of Fire
8 400 Rp icon.png
13 000 Sl icon.png
310 Ge icon.png
Mods new tank vertical aiming.png
Elevation Mechanism
9 300 Rp icon.png
15 000 Sl icon.png
350 Ge icon.png
Mods tank ammo.png
9 300 Rp icon.png
15 000 Sl icon.png
350 Ge icon.png
Mods art support.png
Artillery Support
12 000 Rp icon.png
19 000 Sl icon.png
450 Ge icon.png
Mods tank laser rangefinder.png
Laser rangefinder
12 000 Rp icon.png
19 000 Sl icon.png
450 Ge icon.png


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

Main armament

Two-plane stabilizer
Reduces the swing of the gun in two planes while moving
Ammunition660 rounds
Belt capacity150 rounds
Reloadbasic crew → aces
1.3 → 1.0 s
Fire rate550 shots/min
Vertical guidance-5° / 87°
Main article: Oerlikon KBA (25 mm)

With only 60 APDS rounds available to fire, it is recommended to use them sparingly and only against light tanks/SPAA.

25 mm Oerlikon KBA (x4) 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 660 (150) 550 -5°/+87° ±180° Two-plane 105.7 146.3 177.6 196.4 208.9 1.30 1.15 1.06 1.00
Realistic 71.4 84.0 102.0 112.8 120.0


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
M792 HEI-T* 7 6 4 3 3 3
M791 APDS 80 78 73 66 60 55
Shell details
Ammunition Type of
mass (kg)
Fuse delay
Fuse sensitivity
Explosive mass
(TNT equivalent) (g)
0% 50% 100%
M792 HEI-T* 1,100 0.19 0.1 0.1 54.4 79° 80° 81°
M791 APDS 1,330 0.13 - - - 75° 78° 80°

Ammo racks

Ammo racks of the SIDAM 25
rack empty
8 (+8) No


Main article: 3JB10

The SIDAM 25 is equipped with a 3JB10 optronic tracking system, with no search radar. The tracking system does not trigger the radar warning receiver fitted to some helicopters.

Msg-info.png Although the tracker can track targets in an elevation range of -20°/+85° once locked on, it can only initially lock on to targets between -20°/+20° in elevation.
3JB10 - Optronic Tracking System
Azimuth Tracking
Elevation Tracking
target speed
5,000 m 100 m 360° -20°/+85°
(lock between -20°/+20°)
1 m/s (3.6 km/h)

Usage in battles

The SIDAM 25 can be quite deadly when used effectively thanks to its heavy anti-aircraft firepower and powerful, if limited, APDS rounds. The best way to play the SIDAM 25 is to play very defensively. Due to being based on the widespread M113 chassis, the SIDAM features mediocre mobility and small inclines will challenge it severely. It is best to stick to flat ground where your vehicle can be much easier to control. The SIDAM lacks effective armour protection, and nearly any round will penetrate you with ease. Artillery will also be able to pressure damage you so in that case you should try your best to move away and avoid getting hit by it in the first place.

In case any vehicles breach your defenses you do have access to a small amount of APDS rounds. These will shred light vehicles and can disable heavier ones with precise aim. The SIDAM 25's APDS can penetrate up to 81 mm of armour. Do keep in mind that the APDS is a tier 3 modification so you'll have to research it before having access to it. Use the APDS strictly for self-defense, as the low ammunition count and characteristics of the hull severely limit its offensive ability. You can negate the low APDS count by staying near a capture point for rapid resupply. If able, play around capture points to keep your ammunition supplied.

In the anti-air sector, the SIDAM 25 does not have access to a radar, unlike other nations' counterparts at the battle rating. What you do have access to however is an optronic tracking system, which allows targets to be tracked, and provides one of the most most accurate lead indicators for any vehicle. This will allow you to predict flight paths of any enemy air vehicles you'll be facing. Another great thing about the optronic system is that it cannot be detected by radar warning receivers on enemy aircraft, making it much easier for you to target them and hopefully take them out with a quick barrage of you main gun. Speaking of which, the SIDAM's main armament consists of 4 x 25 mm guns, with a combined firepower of 2200 rounds per minute; more than enough to deal with most of the aircraft you'll face. You also have access to a two-plane stabilizer, which will furthermore aid you in firefights against both ground and air vehicles.

Pros and cons


  • Has an optronic tracking system allowing targets to be tracked and providing a lead indicator
  • Optronic system cannot be detected by RWR on enemy aircraft, making it much easier for you to target them
  • 550 RPM on the 25 mm guns, a combined 2200 RPM
  • Two-axis stabilizer which is very stable
  • Incredibly quick turret traverse and gun elevation
  • APDS can penetrate 81 mm, plenty to defend against enemy vehicles (once it is unlocked)


  • Thin armour, very susceptible to overpressure
  • Relatively poor zoom/magnification, harder to spot small targets at range (especially scout helicopters)
  • APDS rounds are a tier 3 modification - until then, anti-armour work is not possible given the low penetration of the HE rounds
  • Can only carry 60 APDS rounds
  • Not very mobile compared to other tanks and SPAA at its rank, has a hard time scaling hills
  • No search radar - only optronic targeting, meaning you need to have a visible target to lock on, and a clear line-of-sight to track it
  • Can only lock-on to targets -20°/+20° in elevation


The SIDAM 25 was made during the Cold War (the SIDAM system started in about 1980 and first two prototypes were trialed in 1983), Italy wanted to find a suitable anti-air vehicle that would be on par with the Soviet Union's and Warsaw Pact, as well as NATO vehicles such as the German Gepard and the American M163 VADS. Its primary goal was to take out out low flying aircraft but it was provided a secondary capability against lightly armoured targets thanks to the types of ammunition it had access to, such as APDS, HEI and SAPHEI. There had been some contenders on what the next anti air vehicle would be, but the Italian Ministry of defense ended up supporting the SIDAM 25 and started to place orders for the vehicle.

The SIDAM 25 would be based on the American M113 chassis then built under license, mainly it was chosen as it had local production and allowed for a cheap supply of parts and easy maintenance and training. However, to carry the impressive quad system, a large array of modifications had to be carried out including the removal of the single fuel tank replaced with twin tanks either side of the new engine and updated suspension to cope with the increased weight. Although to the outsiders it may look like a decent SPAA (which it is in a way, on a good day), but the actual production version lacked radar and any form of night vision/thermal vision. The SIDAM 25 was advertised at the time to be able to utilize night vision and thermal vision, however there was an issue, cost. The SIDAM 25 project ended up costing Italy too much, so they had to remove things from the actual prototypes such as night vision and the thermal imaging, it ended up having an entirely different turret (the one currently in game). In retrospect Italy could've acquired the OTOMATIC with that money, which although it would lead to less units, it would've been great if they went for quality over quantity.

Sadly the SIDAM 25 lived a short life, in total 276 of such systems were produced from 1985, they'd slowly be taken out of active service and put in storage. Most of them have been used for its main armament, and installed onto the Italian army 'Freccia IFV' which uses the same 25 mm the SIDAM once used. The SIDAM 25 would only ever be exported to a private military collector in Belgium, in an estimated 40 units. There was also plans on installing the SIDAM quad mount on another OTO-Melara project, the C-13, however due to political reasons that would not end up happening. In terms of SIDAM upgrades, modernization plans for the SIDAM 25 were drawn up in late 1994. The Italian engineers proposed the up-arming of the vehicle with Matra Mistral surface-to-air missiles in order to give it better long-range capabilities and improve its performance as a whole. Sadly, the Mistral program which aimed to upgrade the Italian SIDAMs would not be picked up.



See also

External links

OTO Melara
Light Tanks/IFVs 
Centauro  Centauro I 105 · Centauro I 105 R · Centauro I 120 · VRCC
Dardo  Dardo · VCC-80/30 · VCC-80/60
Other  C13 T90 · R3 T106 FA
OF-40  OF-40 · OF-40 Mk.2A · OF-40 (MTCA)
Ariete  Ariete (P) · Ariete · Ariete PSO · Ariete AMV
Other  M47 (105/55)
Tank Destroyers  M113A1 (TOW)
SPAA  R3 T20 FA-HS · SIDAM 25 · SIDAM 25 (Mistral) · OTOMATIC
Patrol Boats 
Sparviero-class  Sparviero*
See Also  OTO
  *Built by OTO Melara in La Spezia under the Alinavi S.p.A. consortium

Italy anti-aircraft vehicles
R3 Capraia  R3 T20 FA-HS
SIDAM 25  SIDAM 25 · SIDAM 25 (Mistral)
Wheeled  AS 42 · CM52
Tracked  M42 Contraereo · Leopard 40/70 · OTOMATIC
Hungary  ◔ZSU-57-2 · ◔ZSU-23-4