Sydney Harbour, passing Opera House. 12 November 2014.
Vessel at 33°51'18.18" S 151°12'55.51" E

Data from Australian National Maritime web site http://www.anmm.gov.au/whats-on/vessels/john-louis

Built in Broome for pearling, John Louis is one of the last sail-rigged working craft built in Australia. In the early 20th century, Australia supplied 75% of the world's pearl shell. Luggers towed their divers over the pearl beds by drifting, often with just the sail on the after mast set. John Louis collected young pearl shells for the cultured pearl industry which thrived after World War II. Its tank of circulating sea water kept shells alive on the return voyage.

SHIP SPECIFICATIONS
Length 15.64 m overall
Breadth 4.39 m
Draught 1.73 m
Displacement 35.6 tonnes
Builder Male & Co, Broome, Western Australia
Construction Carvel, jarrah planking, karri frames, white gum decks, oregon spars
Sail Auxiliary gaff ketch
Engine 6-cylinder Volvo Penta marine diesel 78 kW