A report in the Beijing-based Global Times said that it was possible that the US Navy P-8 Poseidon (shown above) had dropped a sonobouy – an expendable sonar system used to conduct underwater surveillance – into the sea, surveilling China’s nuclear submarines deployed at Hainan Island.

A report in the Beijing-based Global Times said that it was possible that the US Navy P-8 Poseidon (shown above) had dropped a sonobouy – an expendable sonar system used to conduct underwater surveillance – into the sea, surveilling China’s nuclear submarines deployed at Hainan Island.
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