Sydney Harbour, Athol Bay. 3 May 2016.
Vessel at 33°50'58.94" S 151°14'28.33" E

Data from http://www.superyachttimes.com/yachts/details/4972
Imo: 1012555
Call sign: SYT#: Y04972, Flag: Cayman Islands
Length Overall (m): 44.10 Length Overall (ft): 144.69
Shipyard: Alloy Yachts Year: 2014
Hull: AY54 Status: Completed
Port: Auckland Country: New Zealand
Naval Architect: Alloy Yachts
Exterior Designer: Sam Sorgiovanni Designs P/L
Interior Designer: Redman Whiteley Dixon Ltd.
Hull Material: Aluminium Superstructure: Aluminium
Gross Tonnage: 499
Class: Lloyds Register

Sydney Morning Herald has reported she is in the Lowry fleet.
With
Ilonka see http://www.shipspotting.com/gallery/photo.php?lid=1079503
and
Shirley Anne see http://www.shipspotting.com/gallery/photo.php?lid=2103404