Sydney Harbour, Fleet Base East Garden Island. 20 July 2017.
Vessel at 33°51'31.92" S 151°13'39.66" E

Data from RAN web site http://www.navy.gov.au/hmas-warramunga-ii
Class Anzac, Type Frigate Helicopter (FFH)
Role Long-range frigate capable of air defence, surface and undersea warfare, surveillance, reconnaissance and interdiction.
Pennant FFH 152