Udav-1 anti-submarine system

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 hydroacoustic 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.

Specifications

 * 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