Under Sydney Harbour Bridge. 7 February 2013.
See Google Earth 33°51'11.47" S 151°12'34.87" E

Specification data included at http://my-calliope.com/
LOA: 42.28 m (138 ft 9 in)
BEAM: 8.40 m (27 ft 7 in)
DRAFT: 2.63 m (8 ft 8 in)
SPEED (MAX): 16.5 knots
SPEED (CRUISING): 15.0 knots
FUEL CAPACITY:
58,800 Ltr (15,530 Gals)
FRESH WATER CAPACITY:
17,680 Ltr (4,670 Gals)
RANGE AT 15.0 KNOTS: approx. 1900 nm

ENGINES: (2) MTU 16V2000 M72
1930 bhp @ 2250 rpm
BOW THRUSTER: Hydrosta 80kW
STABILIZERS: Naiad (Model 621)
GENERATORS: (2) Northern Lights
M1064H / 90kW / 50Hz @ 1500 rpm
230/400 VAC - 3 phase
WATER MAKERS:
(2) Matrix (7,600 Ltr/Day)