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    2S38 Derivatsiya-PVO 57-mm AAA SPG

    George1
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    Post  George1 Mon Jun 07, 2021 10:46 pm

    PapaDragon
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    Post  PapaDragon Mon Jun 07, 2021 11:03 pm

    George1 wrote:Indonesia bought the naval version. Interesting

    https://www.russiadefence.net/t5800p150-russia-indonesia-arms-contracts#326949

    Well they should have no problems installing these instead of 30mm CIWS but general results is pretty much the same once the hot led starts hitting you

    Few large ones of loads of small ones, same thing over same period of time

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    LMFS
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    Post  LMFS Tue Jun 08, 2021 12:01 am

    Not even close, big calibers allow guided rounds with way higher efficiency against difficult targets. Even the normal air burst of such a big round is incomparably more powerful with a bigger blast radius than what 30 mm can do
    PapaDragon
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    Post  PapaDragon Tue Jun 08, 2021 12:33 am

    LMFS wrote:Not even close, big calibers allow guided rounds with way higher efficiency against difficult targets. Even the normal air burst of such a big round is incomparably more powerful with a bigger blast radius than what 30 mm can do

    Coast Guard never deals with difficult targets, one 30mm round stopped that 404 boat dead in it's tracks

    Now imagine what 2 second burst would do

    It's enough
    Isos
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    Post  Isos Tue Jun 08, 2021 12:36 am

    Well drones are spreading everywhere.

    57mm with its thermals is way better to counter them at decent range compare to ak-630.

    They could also go with naval Sosn-R. Was it called Palma or Palash ?

    Guided rounds needs prprogrammation which can break down. A burst of 30 mm can't go wrong and it create a cloud that moves towards the targets at mach 3 that can't be evaded. Both are effective.


    Last edited by Isos on Tue Jun 08, 2021 12:38 am; edited 1 time in total
    PapaDragon
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    Post  PapaDragon Tue Jun 08, 2021 12:38 am

    Isos wrote:Well drones are spreading everywhere. ...

    If drones are in play then it's Navy's jurisdiction not Coast Guard's

    And majority of drones will get stomped by 30mm anyway
    Isos
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    Post  Isos Tue Jun 08, 2021 12:41 am

    PapaDragon wrote:
    Isos wrote:Well drones are spreading everywhere. ...

    If drones are in play then it's Navy's jurisdiction not Coast Guard's

    Yeah but we are talking about a defensive weapon. It is meant to defend the ship when attacked. So if a threat shows up it can't wait for the navy ship to come.

    And drones can be used by everyone. Coast guards are a military force that uses weapons for a reason. They can't just wait for the navy.
    GarryB
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    Post  GarryB Tue Jun 08, 2021 6:23 am

    30mm are cheap and are devastating against most aircraft, but against smaller targets you do have to fire a lot of rounds to assure a hit.


    Without airburst ammo the 30mm is excellent for use against helicopters and low flying aircraft, but for rather smaller targets like missiles it struggles and you will end up using enormous amounts of ammo to get hits... where the round has to make contact with the target to have any effect.

    Certainly air burst rounds that explode near the target make it much more effective against very small targets.

    If you want to stop a ship then a burst of 30mm rounds through the bridge will stop any ship in its tracks, while a few 30mm round in the water ahead of a boat can have the same effect.

    A 57mm gun extends the range it will work, and its HE rounds carry vastly more HE and fragmentation material so even heavily built targets can be damaged with air burst 57mm rounds.

    The core reason for the 57mm gun is tiny drones where airburst rounds send thousands of splinters into the airspace the drones occupy making hits certain, but also on land against IFVs with 100-150mm frontal armour can be engaged with serious APFSDS rounds that are much more powerful than the similar rounds in 30mm calibre.

    With airburst rounds I would expect 30mm weapons to continue to be used, but 57mm guns will also enter use simply for its better range and the fact that 100 x 30mm rounds probably cost more than 2-3 air burst 57mm rounds and are easier and cheaper to store.

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