Sonar buoy: Sonar buoy is an important equipment for underwater submarine detection, with the characteristics of small size, large search area, high efficiency and good concealment. They are usually composed of a deceleration and landing mechanism, a floating mechanism, an antenna, an electronic circuit, a battery, a hydrophone, a cable and a shock-absorbing damping mechanism. Sonar buoys can be divided into passive omnidirectional sonar buoys, passive directional sonar buoys, active omnidirectional sonar buoys and active directional sonar buoys.
Ocean noise buoy: This buoy is used to measure ocean noise and help set search buoy array parameters. They play an important role in anti-submarine operations, optimizing the placement and formation of sonar buoys by measuring ocean noise.
Warm and deep buoy: Warm and deep buoys are used to measure ocean background data, draw vertical background maps of target sea areas, and help calculate the throwing formation map of submarine search sonar buoys. They provide important environmental data support in anti-submarine operations.