Sydney Harbour, Fleet Base Garden Island. 27 May 2012.
See Google Earth 33°51'40.13" S 151°13'37.17" E

REGISTRY: Cairns, Australia
TONNAGE: 1684 tonnes
LENGTH: 63 metres

Passengers : 600 (seated) to 700.
Sydney Tour boats

Thales 65m, 1000 ton floating dry dock
Note "parts of a ship not normally seen for example Propellers"