A fluorescent lamp converts electrical energy into useful light much more efficiently than incandescent lamps. The typical luminous efficacy of fluorescent lighting systems is 50â100 lumens per watt, several times the efficacy of incandescent bulbs with comparable light output.
The Royal Australian Navy rank of warrant officer (WO) is the navy's only rank appointed by warrant and is equivalent to the army's WO1 (the equivalent of the army's WO2 rank is a chief petty officer).
List of Naval Officer Designators. In the United States Navy officers are assigned to one of four communities, based on their education, training and assignments: Line Officer, Staff Officer, Limited Duty Officer, or Warrant Officer. Each community is further subdivided by primary occupation.