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A comment on Veteran submariner on how sonar crews tirelessly hunt enemies they can't see. Parent comment

Re:Veteran submariner on how sonar crews tirelessly hunt ene... by gus_massa on Wednesday August 12, 2020 @03:38PM (#24135912)
There is a nice video of Lindibeige about that, with some old photos of the setup https://www.youtube.com/watch?v=fVet82IUAqQ
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