FREEPERS:
A quiz.
How many vessels are sending pings? ( )
How many vessels are receiving pings? ( )
How many frequencies are there? ( )
Thoughts:
That actually was a problem a few days ago - one of the early Chinese reports was probably a ship picking up errant pings - but that’s now well in hand.
The Australian Defence Force does know what it’s doing.
no ships are ‘sending’ pings. They are listening on microphones.
the frequency of the pings they’re focused on is 33.5. so other frequencies wouldn’t matter
from the pics I’ve seen, it looks like the Ocean Shield is the only large ship on target.
the Australians are also dropping listening bouys with microphones that will themselves drop on a tether to 1K feet below the surface