What does a submarine active sonar really sound like? I've found a recording from the USS Caiman (BQS4), but I've read that real (modern) active submarine sonar sounds like a multitone range
Developing Sonar | Science and the Sea
What is that distinct sound associated with Submarines and Sonar? - Quora
Submarine Sonar Sound Effects from Battleship Cove's USS Lionfish (Video) - YouTube
Submarine Sonar Sound.flv - YouTube
Download 8 hours of submarine sounds | submarine sound and sonar ping sound effect | sonar sound noises Mp3 (00:01 Min) - MP3 Music Download | Prod
Did real submarines ever make that quivering 'pinging' sound that we hear in TV portrayals? - Quora