Warrant Officer of the Navy

Warrant Officer of the Navy is the most senior sailor in the Royal Australian Navy. It is a singular appointment, being only held by one person at any time. The special insignia for the WO-N is the Australian coat of arms with a wreath around it. The current Warrant Officer of the Navy is Andrew Bertoncin.
The appointment is the equivalent of the Regimental Sergeant Major of the Army in the Australian Army, and Warrant Officer of the Air Force in the Royal Australian Air Force.