Japan used sound waves to detect and monitor Chinese submarine – The Japan Daily Press

Government sources have revealed that the submarine detected plying the waters of the contiguous zone around Minami-Daitojima island in Okinawa Prefecture on Sunday were picked up by a Maritime Self-Defense Force (MSDF) patrol plane using a sonobuoy – a small floating sonar system that emits sound waves, and transmits its data back to the sonar operators. Using the sonobuoy, the plane was able to let the submarine know that it was being monitored.

via Japan used sound waves to detect and monitor Chinese submarine – The Japan Daily Press.

 

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