Disappearance of ARA San Juan - Wikipedia
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The original was posted on /r/todayilearned by /u/PabloTheUnicorn on 2023-06-21 23:16:51+00:00.

Original Title: TIL that when the submarine ARA San Juan disappeared in 2017, initial search crews picked up a banging noise at the search site, like tools hitting metal. After analyzing the audio, it was determined the sound was not from the submarine and was probably from a biological source.

  • @[email protected]English
    2•1 year ago

    The Argentine Navy later reported that sonar systems on two of its ships and sonar buoys dropped by a US P-8A Poseidon aircraft detected noises possibly coming from San Juan; a senior United States Navy officer told CNN that this sounded like banging on the hull in order to alert passing ships;[21][22][23] later analysis of the audio determined that the sound “did not correspond to a submarine”, and was probably of biological origin.

    Left hanging in suspense wondering…