The UDAV-1 system is a submarine defense system designed to use different types of rockets for highly efficient multi-layer defence of surface ships against torpedoes. The system is also capable of engaging submarines and frogmen.

The system comprises:

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

The UDAV-1 MLRS operates in conjunction with the ship's sonar