Did real submarines ever make that quivering 'pinging' sound that we hear in TV portrayals? - Quora
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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
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Can Sonar kill people? - Quora
What would happen if a submarine or surface ship pinged its active sonar while in dry dock and you were next to/underneath it? Would it be lethal and heard for miles or