<P> A warrant officer (WO) in the British Armed Forces is a member of the highest group of non-commissioned ranks, holding the Queen's (or King's) warrant, which is signed by the Secretary of State for Defence . Warrant officers are not saluted as they do not hold the Queen's Commission, however they are to be addressed as' Sir / Ma'am' by subordinates . Commissioned officers may address warrant officers either by their appointment (e.g. QMSI, RSM or sergeant major) or as "Mister", "Mrs", or "Ms" and then their last name, e.g. "Mr Smith". Although often referred to along with non-commissioned officers (NCOs), they are not NCOs, but members of a separate group (traditional official terminology for the personnel of a unit is "the officers, warrant officers, non-commissioned officers and men"), although all have been promoted from NCO rank . </P> <P> Use of the term' warrant officer' dates from the beginnings of the Royal Navy, a time when ships were commanded by noblemen who depended on others with specialist skills to oversee the practicalities of life on board . Specialists such as a ship's carpenter, boatswain and gunner were vital to the safety of all on board, and were accordingly ranked as officers - though by warrant rather than by commission . These and other specialists retained their distinctive rank and status until 1949, when the rank of warrant officer was abolished . </P>

How do you address a warrant officer in the navy
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