Difference between revisions of "SIDAM 25"

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{{About
 
{{About
 
| about = Italian SPAA '''{{PAGENAME}}'''
 
| about = Italian SPAA '''{{PAGENAME}}'''
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| other
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| usage = the version equipped with [[Mistral SATCP]] missiles
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| usage-1 = the version equipped with [[Mistral SATCP]] missiles
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| link = SIDAM 25 (Mistral)
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| link-1 = SIDAM 25 (Mistral)
 
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| usage-2 = other versions
 
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| link-2 = M113 (Family)
 
 
}}
 
}}
 
{{Specs-Card
 
{{Specs-Card
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== Description ==
 
== Description ==
 
<!-- ''In the description, the first part should be about the history of the creation and combat usage of the vehicle, as well as its key features. In the second part, tell the reader about the ground vehicle in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.'' -->
 
<!-- ''In the description, the first part should be about the history of the creation and combat usage of the vehicle, as well as its key features. In the second part, tell the reader about the ground vehicle in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.'' -->
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The '''{{Specs|name}}''' (shortened to '''{{Specs|pseudonym}}''') is a rank {{Specs|rank}} Italian self-propelled anti-aircraft gun {{Battle-rating}}. It was introduced in [[Update 1.85 "Supersonic"]].
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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.
  
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The SIDAM 25 is an optronics-aimed SPAA equipped with 4 x 25 mm Oerlikon KBA cannons with the ability to fire HEI-T* and APDS rounds. Because of the high fire density, this SPAA is able to destroy planes within seconds and just needing a few rounds to hit their target. The M792 belt rounds (HEI-T*) contain a TNT equivalent of 54.4 grams in each projectile, and have a high muzzle velocity of 1,100 m/s, making target leading much easier. However, because of the lack of armour-penetrating rounds in the standard belts, your maximum penetration remains 3 mm until you get the M791 belt (APDS). Once the M791 belt is unlocked, defeating tanks will be much easier, given the 81 mm of penetration at 10 metres, and a muzzle velocity of 1,345 m/s. The potential is however severely limited by the maximum capacity of 660 rounds (165 per gun). Overall, be very careful with your ammunition considering the fire rate and the small ammunition capacity. 4 x 550 rpm and a maximum of 660 rounds means you have about 18 seconds of continuous fire available.
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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 ==
 
== General info ==
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{{Specs-Tank-Armour}}
 
{{Specs-Tank-Armour}}
 
<!-- ''Describe armour protection. Note the most well protected and key weak areas. Appreciate the layout of modules as well as the number and location of crew members. Is the level of armour protection sufficient, is the placement of modules helpful for survival in combat? If necessary use a visual template to indicate the most secure and weak zones of the armour.'' -->
 
<!-- ''Describe armour protection. Note the most well protected and key weak areas. Appreciate the layout of modules as well as the number and location of crew members. Is the level of armour protection sufficient, is the placement of modules helpful for survival in combat? If necessary use a visual template to indicate the most secure and weak zones of the armour.'' -->
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The armour, as with all M113 based tanks, is poor. At best it will withstand 12.7 mm MG when heavily angled or at 600 m range. Aircraft will easily destroy it, if they actually try. However, the tank has a turret and therefore isn't open-topped, so it can sustain weak explosive damage.
 +
 +
The crew is spaced out, each third of a tank only having one of them. A single diagonal hit from the front-left or from back-right will hit all three crew members, so enemy should be kept on the front-right or back-left to maximize survival chance. Any hit to the middle of the tank hull can detonate ammunition belt, so hull hits are best avoided.
 +
 +
A very notable detail is that the person sitting in the turret is the tank commander and he does not control the turret. The gunner is sitting in the very back, so it is possible to "tank" kinetic shells with the turret and then respond to enemy tanks, without necessarily dooming the entire SPAA. Unfortunately, sometimes shrapnel will hit the ammo rack anyway, or enemy might decide to fire HE next, so simply standing under direct fire is still a bad idea.
 +
 
'''Armour type:'''
 
'''Armour type:'''
  
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| Hull || 38 mm (46°), 29 mm (46°) ''Front glacis''<br> 38 mm (25°) ''Lower glacis'' <br> || 44 mm ''Top'' <br> 32 mm ''Bottom'' || 38 mm (10°) || 38 mm (89°) ''Front'' <br> 38 mm (89°) ''Rear'' <br>
 
| Hull || 38 mm (46°), 29 mm (46°) ''Front glacis''<br> 38 mm (25°) ''Lower glacis'' <br> || 44 mm ''Top'' <br> 32 mm ''Bottom'' || 38 mm (10°) || 38 mm (89°) ''Front'' <br> 38 mm (89°) ''Rear'' <br>
 
|-
 
|-
−
| Turret || 38 mm (24°) ''Turret front'' <br> 25 mm (1°) ''Gun mantlet'' || 25 mm (0°) || 25 mm (1°) || 25 mm (89°)
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| Turret || 38 mm (24°) ''Turret front'' <br> 25 mm ''Gun mantlet'' || 25 mm (0°) || 25 mm || 25 mm (89°)
 
|-
 
|-
 
|}
 
|}
 +
'''Notes:'''
 +
 +
* Suspension wheels are 10 mm thick and tracks are 15 mm thick.
  
 
=== Mobility ===
 
=== Mobility ===
 
{{Specs-Tank-Mobility}}
 
{{Specs-Tank-Mobility}}
 
<!-- ''Write about the mobility of the ground vehicle. Estimate the specific power and manoeuvrability, as well as the maximum speed forwards and backwards.'' -->
 
<!-- ''Write about the mobility of the ground vehicle. Estimate the specific power and manoeuvrability, as well as the maximum speed forwards and backwards.'' -->
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It is a very sluggish tank which will generally drive 40 km/h even at its best. The mobility suffers greatly on hilly terrain, slowing the tank further. Advertised maximum speed is only reachable when driving forward on flat ground without trying to turn for a significant amount of time. Roads do not seem to help with acceleration. Reverse speed is -12 km/h on demand with micropause for gear switch into -16 km/h (depending on driver skill).
  
 
{{tankMobility|abMinHp=301|rbMinHp=188}}
 
{{tankMobility|abMinHp=301|rbMinHp=188}}
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{{main|Oerlikon KBA (25 mm)}}
 
{{main|Oerlikon KBA (25 mm)}}
  
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With only 60 APDS rounds available to fire, it is recommended to use them sparingly and only against light tanks/SPAA.
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The turret is the main selling point of the SIDAM 25.
 +
 
 +
It houses four 25 mm cannons which can only fire pure HE or pure APDS belts. The guns all fire at once and while the fire rate isn't as overwhelming as with ZSU-23-4 or other "suppressing fire" SPAA, it more than makes that up with the turret handling and shells.
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 +
It has the fastest turret rotation in the game, even stock it turns as fast as maxed out turret of the Chieftain Marksman with decent crew, and as it is maxed out it can do a 180 turn in less than a second. This allows the user to actually pull off "reactionary" playstyle without having to give up their entire attention span to the skies. Additionally, the guns are completely stabilised, so even if SPAA is running away from something or chasing a helicopter, there is no need to think about movement affecting accuracy.
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 +
Spread out gun formation allows to compensate for inaccurate aim and shell velocity. While it may seem like an overkill to a decent player, the jets more than deserve "overwhelming fire" policy, particularly in the future ranks. This also allows the SPAA to destroy scout drones that are flying towards SPAA, as there isn't enough space for them to squeeze through shell walls. Unfortunately, the Italian SPAA does not have as many shells as its peers, only carrying 660 of them at a maximum, so it needs to stick to a capture point, which can be very dangerous.
  
 
{| class="wikitable" style="text-align:center" width="100%"
 
{| class="wikitable" style="text-align:center" width="100%"
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==== Ammunition ====
 
==== Ammunition ====
−
{| class="wikitable sortable" style="text-align:center" width="100%"
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{{:Oerlikon KBA (25 mm)/Ammunition|M792, M791}}
−
! colspan="8" | Penetration statistics
+
[[File:SIDAM 25 impossible kill.jpg|thumb|right|If backed into a corner, fight till the better end. Sometimes miracles happen.]]
−
|-
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The HE shells fly at 1,100 m/s speed, which is only a bit slower than 30-35 mm calibre shells and significantly faster than shells of the ZSU-23-4. Unfortunately, they will self-destruct at about 2.5 km range, so even with the tracker it is sometimes impossible to blow up the plane that is quickly leaving the premises (it will refuse to aim at the targets back past 2 km range), and some helicopters can be smart enough to avoid SPAA effective range. Since the tracker is absolutely accurate, it is rather easy to annihilate any aircraft that isn't changing their flight direction immediately. Any early helicopter unfortunate enough to appear within effective range of HE shells is probably going to be vaporized before they can even dodge, though it's not impossible.
−
! rowspan="2" data-sort-type="text" | Ammunition
+
 
−
! rowspan="2" | Type of<br>warhead
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The APDS shells do not have the range restrictions, have no tracers and fly at 1,330 m/s speed. They can be used to either shred some annoying tank, or to suddenly tear apart exceptionally annoying aircraft. Since SIDAM 25 is completely accurate and does not trigger any warning, a single tap of APDS will almost certainly scrap any passive aircraft. Unfortunately, the APDS belt is very limited - with only 60 APDS rounds available to fire, it is recommended to use them sparingly and only against light tanks/SPAA or high priority air targets. Sitting directly on a capture point might allow to use them more often at a cost of being extremely easy to find and bomb.
−
! colspan="6" | Penetration @ 0° Angle of Attack (mm)
+
 
−
|-
+
When rearming belts on a capture point, the belt on the first slot in "ammo distribution" menu (left one) will be loaded first. APDS belt is loaded within 1 second unlike HE-I which takes about 15, and is recommended to be first because that would allow SPAA to practically instantly tear apart any chasing opponents.
−
! 10 m !! 100 m !! 500 m !! 1,000 m !! 1,500 m !! 2,000 m
+
 
−
|-
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Even considering the near instant reload of APDS, commanders need to pay attention to certain problems:
−
| M792 || HEI-T* || 3 || 3 || 3 || 3 || 3 || 3
+
* When using capture points for "technically infinite APDS belt", pause fire to avoid spending last 4 APDS shells (and thus be forced to use HE-I belt). This is necessary, as otherwise SPAA will attempt to rearm HE-I belt and glitch the SPAA when APDS is being spent again. Basically, the SPAA will take 15 seconds to rearm APDS belt instead of HE-I. If that happens, leave the capture point circle and enter it again to quickly rearm APDS.
−
|-
+
* It is possible to run out of APDS belts, so try to not antagonize the entire enemy team.
−
| M791 || APDS || 81 || 80 || 76 || 70 || 66 || 61
+
* The guns can overheat, which will put the SPAA on a forced reload for about 20 seconds.
−
|-
 
−
|}
 
−
{| class="wikitable sortable" style="text-align:center" width="100%"
 
−
! colspan="10" | Shell details
 
−
|-
 
−
! rowspan="2" data-sort-type="text" | Ammunition
 
−
! rowspan="2" | Type of<br>warhead
 
−
! rowspan="2" | Velocity<br>(m/s)
 
−
! rowspan="2" | Projectile<br>Mass (kg)
 
−
! rowspan="2" | Fuse delay<br>(m)
 
−
! rowspan="2" | Fuse sensitivity<br>(mm)
 
−
! rowspan="2" | Explosive Mass<br>(TNT equivalent) (g)
 
−
! colspan="3" | Ricochet
 
−
|-
 
−
! 0% !! 50% !! 100%
 
−
|-
 
−
| M792 || HEI-T* || 1,100 || 0.5 || 0 || 0.1 || 54.4 || 79° || 80° || 81°
 
−
|-
 
−
| M791 || APDS || 1,345 || 0.13 || N/A || N/A || N/A || 75° || 78° || 80°
 
−
|-
 
−
|}
 
  
 
==== [[Ammo racks]] ====
 
==== [[Ammo racks]] ====
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|-
 
|-
 
|}
 
|}
−
 
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{{Clear}}
 
===Sensors===
 
===Sensors===
 
{{main|3JB10}}
 
{{main|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.
+
The SIDAM 25 is equipped with a [[3JB10]] optronic tracking system, with no search radar, so it needs to be manually locked on from the sniper seat. The tracking system does not trigger the radar warning receiver fitted to some helicopters and planes. The lock-on scope also will not wobble, like with the radars, providing better aim assist. The aim solution is perfect, but it does not account for aircraft turning or changing speed, so trusting it's prediction completely is still not always wise, and sometimes firing a burst ahead of it helps.
−
{{Notice|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.}}
+
{{Notice|Although the tracker can track targets in an elevation range of -20°/+85° once locked on, it can be difficult to lock on to targets past +20° in elevation. Be patient!}}
  
 
{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
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! {{Annotation|Minimum<br/>target speed|The minimum speed a target must be moving, relative to the radar, in order to be tracked by the radar}}
 
! {{Annotation|Minimum<br/>target speed|The minimum speed a target must be moving, relative to the radar, in order to be tracked by the radar}}
 
|-
 
|-
−
| 5,000 m || 100 m || 360° || -20°/+85°<br />(lock between -20°/+20°) || 1 m/s (3.6 km/h)
+
| 5,000 m || 100 m || 360° || -20°/+85°<br />(lock between -20°/+85°) || 1 m/s (3.6 km/h)
 
|-
 
|-
 
|}
 
|}
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<!-- ''Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but instead give the reader food for thought. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).'' -->
 
<!-- ''Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but instead give the reader food for thought. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).'' -->
  
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The SIDAM 25 can be quite deadly when used right, players who have unlocked this machine will get to experience for the first time in the tree, an anti-air vehicle with firepower that rivals or in some instances, is more effective than other nations counterparts. The best way to play with the SIDAM 25 is to play very defensively. Due to it being based on the widespread chassis known as the M113, the SIDAM sadly does not have the best performance on or off road, even a small incline will seriously impact your overall mobility when using the vehicle. It is best to stick to flat ground where your vehicle can be much easier to control. The M113 also does not have the best survivability, so in that the SIDAM also sadly suffers in that area, so it is best to stick with more protected teammates or to flat out stay away from any type of enemy ground vehicles. 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.
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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.
  
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In case any vehicles breach your defenses you do have access to a small amount of APDS rounds, they might be able to deal with lightly armoured vehicles, and for the more heavier and protected vehicles, the APDS will at times penetrate and damage enemy tanks. 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. Due to the very low amount you have access to it is highly advised you use it strictly only for self defense, going on the attack with APDS will not usually work out for you, especially on the SIDAM considering the factors mentioned earlier: being slow, and not having very good mobility, not being very survivable, and overall being a very big target are all downsides for the SIDAM 25. You can negate the APDS shortage by being close to a capture point, as not only will it replenish your main ammunition to keep you focused on shooting down air targets, but it will allow you to be a bit more wild with the APDS, as you'll be able to quickly replenish it easily, to allow you to last longer on the battlefield. So overall for the SIDAM, the best tactic is to try your best to remain or at least be near a capture point.
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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. Outside of a capture point, use the APDS strictly for self-defense, as the low ammunition count and characteristics of the hull severely limit its offensive ability. If able, play around capture points to keep your ammunition constantly supplied.
  
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In the anti-air sector, the SIDAM 25 sadly 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, they have 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.
+
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 guns. 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 any aircraft foolish enough to fly directly at you. Even if they do not approach you directly or managed to surprise you, the turret can quickly snap in their direction to fire a lethal burst of APDS after them. Additionally, APDS can be used for stealthy assassinations of any long-range CAS, as long as you can actually spot them. You also have access to a two-plane stabilizer, which will furthermore aid you in firefights against both ground and air vehicles, as you don't really have to stay in one spot.
  
 
=== Pros and cons ===
 
=== Pros and cons ===
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'''Pros:'''
 
'''Pros:'''
  
−
* Has an optronic tracking system allowing targets to be tracked and providing a lead indicator
+
* Fastest turret traverse and incredibly quick gun elevation
−
* Optronic system cannot be detected by RWR on enemy aircraft, making it much easier for you to target them
+
* Actually can destroy scout drones with decent aim
 +
* Has an optronic tracking system allowing targets to be tracked and providing a better lead indicator than radar
 +
* Optronic system cannot be detected by RWR on enemy aircraft, making it much easier for user to snipe them, particularly with APDS
 
* 550 RPM on the 25 mm guns, a combined 2200 RPM
 
* 550 RPM on the 25 mm guns, a combined 2200 RPM
−
* Two-axis stabilizer which is very stable
+
* Two-axis stabilizer which works even when SIDAM is driving at its maximum speed
−
* Incredibly quick turret traverse and gun elevation
+
* APDS can penetrate 81 mm and is invisible, plenty to defend against enemy vehicles (once it is unlocked)
−
* APDS can penetrate 81 mm, plenty to defend against enemy vehicles (once it is unlocked)
+
* Turret can be controlled without a person sitting in it
  
 
'''Cons:'''
 
'''Cons:'''
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* Thin armour, very susceptible to overpressure
 
* Thin armour, very susceptible to overpressure
 
* Relatively poor zoom/magnification, harder to spot small targets at range (especially scout helicopters)
 
* Relatively poor zoom/magnification, harder to spot small targets at range (especially scout helicopters)
 +
* HE rounds have a rather short range before they self-destruct
 
* APDS rounds are a tier 3 modification - until then, anti-armour work is not possible given the low penetration of the HE rounds
 
* 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
+
* Can only carry 60 APDS rounds, has to stay next to a capture point to remain viable
 
* Not very mobile compared to other tanks and SPAA at its rank, has a hard time scaling hills
 
* 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
+
* No search radar - only optronic targeting, meaning user needs 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
 
−
* Not very mobile
 
  
 
== History ==
 
== History ==
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;Skins
 
;Skins
−
* [https://live.warthunder.com/feed/camouflages/?vehicleCountry=italy&vehicleType=tank&vehicleClass=spaa&vehicle=it_otobreda_sidam_25 Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]
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* [https://live.warthunder.com/feed/camouflages/?vehicle=it_otobreda_sidam_25 Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]
  
 
== See also ==
 
== See also ==
−
''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
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<!-- ''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;''
 
* ''reference to the series of the vehicles;''
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* ''links to approximate analogues of other nations and research trees.''
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* ''links to approximate analogues of other nations and research trees.'' -->
 +
 
 +
;Related development
 +
* [[M113 (Family)]]
  
 
== External links ==
 
== External links ==
−
''Paste links to sources and external resources, such as:''
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<!-- ''Paste links to sources and external resources, such as:''
 
* ''topic on the official game forum;''
 
* ''topic on the official game forum;''
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* ''other literature.''
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* ''other literature.'' -->
 +
 
 +
* https://forum.warthunder.com/index.php?/topic/543261-sidam-25/
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* https://forum.warthunder.com/index.php?/topic/486514-sidam-25-and-sidam-25-mistral/
  
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{{TankManufacturer OTO Melara}}v
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{{TankManufacturer OTO Melara}}
 
{{Italy anti-aircraft vehicles}}
 
{{Italy anti-aircraft vehicles}}

Latest revision as of 15:05, 5 May 2024

Introducing Wiki 3.0
This page is about the Italian SPAA SIDAM 25. For the version equipped with Mistral SATCP missiles, see SIDAM 25 (Mistral).
SIDAM 25
it_otobreda_sidam_25.png
GarageImage SIDAM 25.jpg
SIDAM 25
Italy flag.png Italy
VI Rank
Battle rating:
AB RB SB
8.3 8.3 8.3
Class:
Research:160 000 Specs-Card-Exp.png
Purchase:450 000 Specs-Card-Lion.png

Description

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 %

The armour, as with all M113 based tanks, is poor. At best it will withstand 12.7 mm MG when heavily angled or at 600 m range. Aircraft will easily destroy it, if they actually try. However, the tank has a turret and therefore isn't open-topped, so it can sustain weak explosive damage.

The crew is spaced out, each third of a tank only having one of them. A single diagonal hit from the front-left or from back-right will hit all three crew members, so enemy should be kept on the front-right or back-left to maximize survival chance. Any hit to the middle of the tank hull can detonate ammunition belt, so hull hits are best avoided.

A very notable detail is that the person sitting in the turret is the tank commander and he does not control the turret. The gunner is sitting in the very back, so it is possible to "tank" kinetic shells with the turret and then respond to enemy tanks, without necessarily dooming the entire SPAA. Unfortunately, sometimes shrapnel will hit the ammo rack anyway, or enemy might decide to fire HE next, so simply standing under direct fire is still a bad idea.

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°)

Notes:

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

Mobility

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

It is a very sluggish tank which will generally drive 40 km/h even at its best. The mobility suffers greatly on hilly terrain, slowing the tank further. Advertised maximum speed is only reachable when driving forward on flat ground without trying to turn for a significant amount of time. Roads do not seem to help with acceleration. Reverse speed is -12 km/h on demand with micropause for gear switch into -16 km/h (depending on driver skill).

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 modifications131 200 Rp icon.png
229 000 Sl icon.png
Talisman cost2 400 Ge icon.png
Crew training130 000 Sl icon.png
Experts450 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
Modifications
Mobility Protection Firepower
Mods new tank traks.png
Tracks
Research:
9 400 Rp icon.png
Cost:
15 000 Sl icon.png
370 Ge icon.png
Mods new tank suspension.png
Suspension
Research:
8 000 Rp icon.png
Cost:
13 000 Sl icon.png
310 Ge icon.png
Mods new tank break.png
Brake System
Research:
8 000 Rp icon.png
Cost:
13 000 Sl icon.png
310 Ge icon.png
Mods new tank filter.png
Filters
Research:
8 800 Rp icon.png
Cost:
14 000 Sl icon.png
340 Ge icon.png
Mods new tank transmission.png
Transmission
Research:
12 000 Rp icon.png
Cost:
19 000 Sl icon.png
470 Ge icon.png
Mods new tank engine.png
Engine
Research:
12 000 Rp icon.png
Cost:
19 000 Sl icon.png
470 Ge icon.png
Mods tank tool kit.png
Improved Parts
Research:
2 800 Rp icon.png
Cost:
15 000 Sl icon.png
370 Ge icon.png
Mods extinguisher.png
Improved FPE
Research:
2 400 Rp icon.png
Cost:
13 000 Sl icon.png
310 Ge icon.png
Mods tank reinforcement it.png
Crew Replenishment
Research:
8 800 Rp icon.png
Cost:
14 000 Sl icon.png
340 Ge icon.png
Mods new tank horizontal aiming.png
Horizontal Drive
Research:
9 400 Rp icon.png
Cost:
15 000 Sl icon.png
370 Ge icon.png
Mods tank cannon.png
Adjustment of Fire
Research:
8 000 Rp icon.png
Cost:
13 000 Sl icon.png
310 Ge icon.png
Mods new tank vertical aiming.png
Elevation Mechanism
Research:
8 800 Rp icon.png
Cost:
14 000 Sl icon.png
340 Ge icon.png
Mods tank ammo.png
25mm_kba_APDS_ammo_pack
Research:
8 800 Rp icon.png
Cost:
14 000 Sl icon.png
340 Ge icon.png
Mods art support.png
Artillery Support
Research:
12 000 Rp icon.png
Cost:
19 000 Sl icon.png
470 Ge icon.png
Mods tank laser rangefinder.png
Laser rangefinder
Research:
12 000 Rp icon.png
Cost:
19 000 Sl icon.png
470 Ge icon.png

Armaments

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

Main armament

4 x 25 mm Oerlikon KBA cannon
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)

The turret is the main selling point of the SIDAM 25.

It houses four 25 mm cannons which can only fire pure HE or pure APDS belts. The guns all fire at once and while the fire rate isn't as overwhelming as with ZSU-23-4 or other "suppressing fire" SPAA, it more than makes that up with the turret handling and shells.

It has the fastest turret rotation in the game, even stock it turns as fast as maxed out turret of the Chieftain Marksman with decent crew, and as it is maxed out it can do a 180 turn in less than a second. This allows the user to actually pull off "reactionary" playstyle without having to give up their entire attention span to the skies. Additionally, the guns are completely stabilised, so even if SPAA is running away from something or chasing a helicopter, there is no need to think about movement affecting accuracy.

Spread out gun formation allows to compensate for inaccurate aim and shell velocity. While it may seem like an overkill to a decent player, the jets more than deserve "overwhelming fire" policy, particularly in the future ranks. This also allows the SPAA to destroy scout drones that are flying towards SPAA, as there isn't enough space for them to squeeze through shell walls. Unfortunately, the Italian SPAA does not have as many shells as its peers, only carrying 660 of them at a maximum, so it needs to stick to a capture point, which can be very dangerous.

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

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
M792 HEI-T* 7 6 4 3 3 3
M791 APDS 80 78 73 66 60 55
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%
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°
If backed into a corner, fight till the better end. Sometimes miracles happen.

The HE shells fly at 1,100 m/s speed, which is only a bit slower than 30-35 mm calibre shells and significantly faster than shells of the ZSU-23-4. Unfortunately, they will self-destruct at about 2.5 km range, so even with the tracker it is sometimes impossible to blow up the plane that is quickly leaving the premises (it will refuse to aim at the targets back past 2 km range), and some helicopters can be smart enough to avoid SPAA effective range. Since the tracker is absolutely accurate, it is rather easy to annihilate any aircraft that isn't changing their flight direction immediately. Any early helicopter unfortunate enough to appear within effective range of HE shells is probably going to be vaporized before they can even dodge, though it's not impossible.

The APDS shells do not have the range restrictions, have no tracers and fly at 1,330 m/s speed. They can be used to either shred some annoying tank, or to suddenly tear apart exceptionally annoying aircraft. Since SIDAM 25 is completely accurate and does not trigger any warning, a single tap of APDS will almost certainly scrap any passive aircraft. Unfortunately, the APDS belt is very limited - with only 60 APDS rounds available to fire, it is recommended to use them sparingly and only against light tanks/SPAA or high priority air targets. Sitting directly on a capture point might allow to use them more often at a cost of being extremely easy to find and bomb.

When rearming belts on a capture point, the belt on the first slot in "ammo distribution" menu (left one) will be loaded first. APDS belt is loaded within 1 second unlike HE-I which takes about 15, and is recommended to be first because that would allow SPAA to practically instantly tear apart any chasing opponents.

Even considering the near instant reload of APDS, commanders need to pay attention to certain problems:

  • When using capture points for "technically infinite APDS belt", pause fire to avoid spending last 4 APDS shells (and thus be forced to use HE-I belt). This is necessary, as otherwise SPAA will attempt to rearm HE-I belt and glitch the SPAA when APDS is being spent again. Basically, the SPAA will take 15 seconds to rearm APDS belt instead of HE-I. If that happens, leave the capture point circle and enter it again to quickly rearm APDS.
  • It is possible to run out of APDS belts, so try to not antagonize the entire enemy team.
  • The guns can overheat, which will put the SPAA on a forced reload for about 20 seconds.

Ammo racks

Ammo racks of the SIDAM 25
Full
ammo 		1st
rack empty 		Visual
discrepancy
8 0 (+8) No

Sensors

Main article: 3JB10

The SIDAM 25 is equipped with a 3JB10 optronic tracking system, with no search radar, so it needs to be manually locked on from the sniper seat. The tracking system does not trigger the radar warning receiver fitted to some helicopters and planes. The lock-on scope also will not wobble, like with the radars, providing better aim assist. The aim solution is perfect, but it does not account for aircraft turning or changing speed, so trusting it's prediction completely is still not always wise, and sometimes firing a burst ahead of it helps.

Msg-info.png Although the tracker can track targets in an elevation range of -20°/+85° once locked on, it can be difficult to lock on to targets past +20° in elevation. Be patient!
3JB10 - Optronic Tracking System
Maximum
Tracking
Range 		Minimum
Tracking
Range 		Azimuth Tracking
Angle 		Elevation Tracking
Angle 		Minimum
target speed
5,000 m 100 m 360° -20°/+85°
(lock between -20°/+85°) 		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. Outside of a capture point, use the APDS strictly for self-defense, as the low ammunition count and characteristics of the hull severely limit its offensive ability. If able, play around capture points to keep your ammunition constantly 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 guns. 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 any aircraft foolish enough to fly directly at you. Even if they do not approach you directly or managed to surprise you, the turret can quickly snap in their direction to fire a lethal burst of APDS after them. Additionally, APDS can be used for stealthy assassinations of any long-range CAS, as long as you can actually spot them. You also have access to a two-plane stabilizer, which will furthermore aid you in firefights against both ground and air vehicles, as you don't really have to stay in one spot.

Pros and cons

Pros:

  • Fastest turret traverse and incredibly quick gun elevation
  • Actually can destroy scout drones with decent aim
  • Has an optronic tracking system allowing targets to be tracked and providing a better lead indicator than radar
  • Optronic system cannot be detected by RWR on enemy aircraft, making it much easier for user to snipe them, particularly with APDS
  • 550 RPM on the 25 mm guns, a combined 2200 RPM
  • Two-axis stabilizer which works even when SIDAM is driving at its maximum speed
  • APDS can penetrate 81 mm and is invisible, plenty to defend against enemy vehicles (once it is unlocked)
  • Turret can be controlled without a person sitting in it

Cons:

  • Thin armour, very susceptible to overpressure
  • Relatively poor zoom/magnification, harder to spot small targets at range (especially scout helicopters)
  • HE rounds have a rather short range before they self-destruct
  • 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, has to stay next to a capture point to remain viable
  • 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 user needs to have a visible target to lock on, and a clear line-of-sight to track it

History

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.

Media

Skins

See also

Related development

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
MBTs 
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

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