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A petty officer (PO) is a non-commissioned officer in many navies. Often they may be superior to a seaman, and subordinate to more senior non-commissioned officers, such as chief petty officers.
Petty officers are usually sailors that have served at least several years in their respective navies. Petty officers represent the junior and mid-grade non-commissioned officer ranks of many naval services, and are generally responsible for the day-to-day supervision of ranks junior to them. They may also serve as technical specialists within their rating (military occupation).
The modern petty officer dates back to the Age of Sail in the Royal Navy. Petty officers rank between naval officers (both commissioned and warrant) and most enlisted sailors. These were men with some claim to officer rank, sufficient to distinguish them from ordinary ratings, without raising them so high as the sea officers. Several were warrant officers, in the literal sense of being appointed by warrant, and like the warrant sea officers, their superiors, they were usually among the specialists of the ship's company. [1] The Oxford English Dictionary suggests that the title derives from the Anglo-Norman and Middle French "petit", meaning "of small size, small, little". [2]
Two of the Royal Navy petty officer's rates, midshipman and master's mate, were a superior petty officer with a more general authority, but they remained no more than ratings. However, it was quite possible for a warrant officer (such as the armourer), in his role as a superior officer, to be court-martialed for striking a midshipman. This is because the midshipman was regarded as future sea officer, with the all-important social distinction of having the right to walk the quarterdeck. Midshipmen wore distinctive uniforms, master's mates dressed respectably, and both behaved like officers. The master's mate rating evolved into the rank of sub-lieutenant, and midshipman evolved into naval cadet. [1] In the same administrative reforms of the 1860s that created the rank of Sub-lieutenant, two grades of Petty Officer were established for senior ratings — Petty Officer Second Class and Petty Officer First Class, the latter usually being achieved by men who had served as a PO 2nd Class with good conduct for six years. PO2s wore 'square rig' (the traditional sailor suit worn by junior ratings) while PO1s wore 'fore and aft' rig like chief petty officers and above. PO2s wore insignia of a fouled anchor (as for leading hands) but surmounted by a crown, while the insignia of a PO1 was a pair of crossed fouled anchors with a crown. The rank of Petty Officer Second Class was abolished in 1907 and the rank simply being titled as Petty Officer from then, with the uniform and insignia formerly used by PO1s. [3]
There are two petty officer ranks in the Royal Canadian Navy. Petty officer, 2nd class (PO2) (maître de deuxième classe or m2 in French) is equivalent to a sergeant and petty officer, 1st class (PO1) (maître de première classe or m1) is equivalent to a warrant officer.
Petty officers are normally addressed as "Petty Officer Bloggins" or "PO Bloggins", thereafter as "PO". The "1st class" and "2nd class" designations are normally only used when such a distinction needs to be made, such as on a promotion parade or to distinguish two petty officers with similar names but different ranks. The NATO rank denotion for "petty officer, 2nd class" is OR-6 (petty officers, 2nd class with less than 3 years seniority are considered OR-5). The NATO rank denotion for "petty officer, 1st class" is OR-7.
A petty officer is a non-commissioned officer in the Indian Navy, equivalent to the NATO rank enlisted grade of OR-6. They are equal in rank to a sub inspector of police in the Police, or sergeant in the Indian Army and Indian Air Force. A petty officer is superior in rank to a leading rate and subordinate to a chief petty officer, as is the case in the majority of Commonwealth navies.
A petty officer has the ability to work as a leader, capable of taking charge of a group of personnel, and taking roles in the training and recruitment of new members of the Indian Navy.
In the Royal Navy, the rate of petty officer comes above that of leading rating and below that of chief petty officer. It is the equivalent of sergeant in the Royal Marines, British Army and Royal Air Force. Petty officer is the lowest of the senior rating grades. Petty officers, like all senior rates, wear "fore and aft" rig.
The title of petty officer in the United States Navy and United States Coast Guard has three separate "classes" (in order from junior to senior: 3rd class, 2nd class, 1st class) and three senior grades (chief petty officer, senior chief petty officer, master chief petty officer). Petty officer, first class is equivalent in paygrade to staff sergeant in the United States Army and Marine Corps, and technical sergeant in the United States Air Force and United States Space Force. Petty officer, second class is equivalent in paygrade to sergeant in the United States Army, Marine Corps, and Space Force, and staff sergeant in the United States Air Force. Petty officer, third class is equivalent in paygrade to corporal in the United States Army, corporal in the United States Marine Corps, senior airman in the United States Air Force, and specialist 4 in the United States Space Force.
In the Navy, Petty Officer, Third Class is the juniormost of the Non-Commissioned Officer ranks, and thus a sailor must demonstrate satisfactory performance in the previous rank (E-3) in the form of a favorable performance review(s) by his/her superiors, and the passing of an exam, in order to be promoted to PO3.
Enlisted rank has two components: rate (pay grade) and rating (job specialty). Both components are reflected in the title. A sailor in the rate of petty officer first class with a rating of Aviation Machinist's Mate, would be an Aviation Machinist's Mate 1st Class (abbreviated "AD1"). In the Navy, it is acceptable to refer to a Petty Officer as such, while in the Coast Guard, rating is always used.
Warrant officer (WO) is a rank or category of ranks in the armed forces of many countries. Depending on the country, service, or historical context, warrant officers are sometimes classified as the most junior of the commissioned officer ranks, the most senior of the non-commissioned officer (NCO) ranks, or in a separate category of their own. Warrant officer ranks are especially prominent in the militaries of Commonwealth nations and the United States.
A non-commissioned officer (NCO) is a military officer who does not hold a commission. Non-commissioned officers usually earn their position of authority by promotion through the enlisted ranks. In contrast, commissioned officers usually enter directly from a military academy, officer training corps (OTC) or reserve officer training corps (ROTC), or officer candidate school (OCS) or officer training school (OTS), after receiving a post-secondary degree.
A midshipman is an officer of the lowest rank in the Royal Navy, United States Navy, and many Commonwealth navies. Commonwealth countries which use the rank include Canada, Australia, Bangladesh, Namibia, New Zealand, South Africa, India, Pakistan, Singapore, Sri Lanka, and Kenya.
In a military navy, a rate or rating, is a junior enlisted sailor who is below the military rank of warrant officer. They are not a commissioned officer. Depending on the country and navy that uses it, the exact term and the range of ranks that it refers to may vary.
A chief petty officer (CPO) is a senior non-commissioned officer in many navies and coast guards, usually above petty officer.
Senior Chief Petty Officer(SCPO) is an enlisted rank in the navies of some countries.
A master chief petty officer is a senior non-commissioned officer in many navies and coast guards, usually above some grade of petty officer.
Petty officer second class (PO2) is a rank found in some navies and maritime organizations.
Petty officer first class (PO1) is a rank found in some navies and maritime organizations.
Chief Warrant officer is a senior warrant officer rank, used in many countries.
Before Unification as the Canadian Armed Forces in 1968, the Canadian military had three distinct services: the Royal Canadian Navy, the Royal Canadian Air Force, and the Canadian Army. All three services had a Regular (full-time) component and a reserve (part-time) component. The rank structure for these services were based on the services of the British military, the Royal Navy, the Royal Air Force, and the British Army. The change to a "Canadian" rank structure meant that many of the traditional (British) rank titles and insignia were removed or changed.
Specialist is a military rank in some countries' armed forces. Two branches of the United States Armed Forces use the rank. It is one of the four junior enlisted ranks in the United States Army, above private (PVT), private (PV2), and private first class and is equivalent in pay grade to corporal; in the United States Space Force, four grades of specialist comprise the four junior enlisted ranks below the rank of sergeant.
In the United States Armed Forces, the ranks of warrant officer and chief warrant officer are rated as officers above all non-commissioned officers, candidates, cadets, and midshipmen, but subordinate to the lowest officer grade of O‑1. This application differs from the Commonwealth of Nations and other militaries, where warrant officers are the most senior of the other ranks, equivalent to the U.S. Armed Forces grades of E‑8 and E‑9.
The Australian Defence Force's (ADF) ranks of officers and enlisted personnel in each of its three service branches of the Royal Australian Navy (RAN), the Australian Army, and the Royal Australian Air Force (RAAF) inherited their rank structures from their British counterparts. The insignia used to identify these ranks are also generally similar to those used in the British Armed Forces.
A warrant officer (WO) in the British Armed Forces is a member of the highest-ranking group of non-commissioned ranks, holding the King's Warrant, which is signed by the Secretary of State for Defence.
Chief petty officer (CPO) is the seventh enlisted rank in the United States Navy and U.S. Coast Guard, is above petty officer first class and below senior chief petty officer. The term "rating" is used to identify enlisted job specialties. In this way, enlisted personnel are segregated into three segments containing different enlisted ranks. Furthermore, rates are broken down into three levels: non-rated members without a designated occupation. Advancement to E-4 and above is dependent on graduating from a specialty school that define what the enlisted is rated for. Petty officers and chief petty officers are part of the rated force and considered extremely knowledgeable about their particular rating. Examples include Culinary Services Chief and Aviation Maintenance Chief. The Chief Petty Officer is the rank. Gunners Mate is a rating. E7 is a pay grade. The term rating is used to identify the career field of a chief petty officer. For example, the title of a chief petty officer in the Master-at-Arms rating would be spoken or spelled out as Chief Master-at-Arms. The title would be abbreviated MAC. The grade of chief petty officer was established on 1 April 1893 in the United States Navy. The United States Congress first authorized the Coast Guard to use the promotion to Chief Petty Officer on 18 May 1920. Chief petty officer is also the final cadet grade in the United States Naval Sea Cadet Corps.