Udav-1 anti-submarine system

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The UDAV-1 system is a Russian ship-borne Anti-submarine weapon system. The weapon fires a number of different types of rockets, which in addition to attacking submarines provide a multi-layer defence against torpedoes and frogmen. The system operates in conjunction with the ship's sonar.

The system consists of:

  • A KT-153 remotely controlled multi-barrel automated rocket launcher with indirect elevation/traverse stabilisation;
  • 111SG depth-charge rockets with HE warhead and impact-time fuze to engage underwater targets;
  • 111SZ mine-laying rockets with hydro-acoustic proximity fuze for remote mining of a water area to make a barrier for incoming torpedoes;
  • 111SO decoy rockets to divert homing torpedoes from the surface ship by creating false acoustic target;
  • fire control devices;
  • an ammunition loading device;
  • ground support equipment.


  • Number of barrels: 10
  • Number of rockets (including reloads): 40-60
  • Effective range: 3,000 meters
  • Effective dept: 600 meters
  • Firing modes: single, salvo
  • Rocket caliber: 300 mm
  • Rocket length: 2,200 mm
  • Reaction time: 15 seconds
  • Intercept probability (salvo): 0.9 vs. torpedoes, 0.76 vs. homing torpedoes

Ship deployment[edit]