The former HMAS Advance is a retired Attack class patrol boat which operated in the waters of northern Australia during the late 60s, 70s and early 80s. She was also used for filming a drama series called, appropriately enough, Patrol Boat under the fictional name HMAS Ambush. She is now a permanent member of the collection of the National Maritime Museum at Darling Harbour, and is as far as I know still maintained in operational condition.

Even more famously, she's appeared in some of my PADs of the past. This one obviously is less about the boat herself, and more about the parallel and intersecting lines of the shot.