Australian defence vessel Ocean Shield acquired the signal twice, once for more than two hours, Australia said.
The ship then turned around and on the return leg detected the signal again for 13 minutes.
The Ocean Shield was still in the area but had not been able to reacquire the signals since, he said.
all above from -
www.bbc.co.uk/news/world-asia-26917934
Are we really supposed to believe this tosh ?
(PS - This "ping" is 600km from the Chinese "ping" - there are "pings" everywhere !)