Australia sold the Port of Darwin to the Chinese
result
(to keep this very simple)
every ship that moves within this harbour
the signal from that ships under water 'sounds' can and would be recorded
every ship, above or under the water
has its very own signal/s
to find a sub
you must listen for it
and when you know that subs signal
you have it, the sub can no longer hide
and then its easily destroyed
(sound travels further, a lot further under water)
your sub is useless now
for those that don't know
you can fly over and listen for your target, the sub
the people, the experts of Canberra are
you guess
A..........
B.............
and at an Open Ended Contract pricing
the people, the experts of Canberra are
you guess
A..............
B..............
