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A comment on Titanic tourist sub goes missing sparking search. Parent comment

Re:Titanic tourist sub goes missing sparking search by Prickle on Monday June 19, 2023 @07:52PM (#36397936)
Military submarines also have a towed communications buoy that they can use to communicate with satellites. But that thing is connected to the submersible via a cable.
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Re:Titanic tourist sub goes missing sparking search by closewith on Tuesday June 20, 2023 @07:45AM (#36402670)
Even then, ELF is only available down to depths of hundreds of metres, not kilometres.
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