What is the underwater equivalent of radar
Sonar Lfas Passive sonar Variable Depth Sonar Active sonar So.n.a.r. Low Frequency Active Sonar Active acoustics Passive Sonar Sonars Asdic Sound navigation and ranging Ultra-sonic Anti-Submarine Detection and Identification Commission ASDIC SONAR Asdivite Acoustic radar Variable depth sonar Sonar system Sonar Projector