IMOS includes Australia's dual (civilian, military) use passive acoustic undersea network and many other ocean sensor platforms. This includes RAN operated AUVs. Here is IMOS's facilities list http://imos.org.au/facilities.html - very much an Australian dual-use portion of the wider allied with the US SeaWeb sensor-database network.
IMOS includes a National Mooring Network with passive acoustic observatories that are fairly submarine relevant - see Deployment Map A.
Unsurprisingly two of IMOS "Operational Partners" are the: