A petty officer (PO) is a
non-commissioned officer
A non-commissioned officer (NCO) is a military officer who has not pursued a commission. Non-commissioned officers usually earn their position of authority by promotion through the enlisted ranks. (Non-officers, which includes most or all enli ...
in many
navies
A navy, naval force, or maritime force is the branch of a nation's armed forces principally designated for naval and amphibious warfare; namely, lake-borne, riverine, littoral, or ocean-borne combat operations and related functions. It includ ...
and is given the
NATO
The North Atlantic Treaty Organization (NATO, ; french: Organisation du traité de l'Atlantique nord, ), also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 member states – 28 European and two No ...
rank
Rank is the relative position, value, worth, complexity, power, importance, authority, level, etc. of a person or object within a ranking, such as:
Level or position in a hierarchical organization
* Academic rank
* Diplomatic rank
* Hierarchy
* H ...
denotation
OR-5 or OR-6. In many nations, they are typically equal to a
sergeant
Sergeant (abbreviated to Sgt. and capitalized when used as a named person's title) is a rank in many uniformed organizations, principally military and policing forces. The alternative spelling, ''serjeant'', is used in The Rifles and other uni ...
in comparison to other military branches. Often they may be
superior
Superior may refer to:
*Superior (hierarchy), something which is higher in a hierarchical structure of any kind
Places
*Superior (proposed U.S. state), an unsuccessful proposal for the Upper Peninsula of Michigan to form a separate state
*Lake ...
to a
seaman
Seaman may refer to:
* Sailor, a member of a marine watercraft's crew
* Seaman (rank), a military rank in some navies
* Seaman (name) (including a list of people with the name)
* ''Seaman'' (video game), a 1999 simulation video game for the Seg ...
, and subordinate to more senior non-commissioned officers, such as a
chief petty officer
A chief petty officer (CPO) is a senior non-commissioned officer in many navies and coast guards.
Canada
"Chief petty officer" refers to two ranks in the Royal Canadian Navy. A chief petty officer 2nd class (CPO2) (''premier maître de deuxi ...
s.
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
A rating is an evaluation or assessment of something, in terms of quality, quantity, or some combination of both.
Rating or ratings may also refer to:
Business and economics
* Credit rating, estimating the credit worthiness of an individual, c ...
(military occupation).
Origin
![Royal Navy Boatswain 1820](https://upload.wikimedia.org/wikipedia/commons/7/76/Royal_Navy_Boatswain_1820.jpg)
The modern petty officer dates back to the
Age of Sail
The Age of Sail is a period that lasted at the latest from the mid-16th (or mid- 15th) to the mid- 19th centuries, in which the dominance of sailing ships in global trade and warfare culminated, particularly marked by the introduction of naval ...
in the
Royal Navy
The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against F ...
. Petty officers
rank
Rank is the relative position, value, worth, complexity, power, importance, authority, level, etc. of a person or object within a ranking, such as:
Level or position in a hierarchical organization
* Academic rank
* Diplomatic rank
* Hierarchy
* H ...
between naval
officers
An officer is a person who has a position of authority in a hierarchical organization. The term derives from Old French ''oficier'' "officer, official" (early 14c., Modern French ''officier''), from Medieval Latin ''officiarius'' "an officer," fro ...
(both
commissioned and
warrant) and most
enlisted
Enlisted may refer to:
* Enlisted rank
An enlisted rank (also known as an enlisted grade or enlisted rate) is, in some armed services, any rank below that of a commissioned officer. The term can be inclusive of non-commissioned officers or ...
sailor
A sailor, seaman, mariner, or seafarer is a person who works aboard a watercraft as part of its crew, and may work in any one of a number of different fields that are related to the operation and maintenance of a ship.
The profession of the s ...
s. These were men with some claim to officer rank, sufficient to distinguish them from ordinary
rating
A rating is an evaluation or assessment of something, in terms of quality, quantity, or some combination of both.
Rating or ratings may also refer to:
Business and economics
* Credit rating, estimating the credit worthiness of an individual, c ...
s, 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.
The ''Oxford English Dictionary'' suggests that the title derives from the Anglo-Norman and Middle French "petit", meaning "of small size, small, little".
"petty officer"
''Oxford English Dictionary', Oxford University Press
Two of the Royal Navy petty officer's rates, midshipman
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 (Naval Cadet), Australia, Bangladesh, Namibia, New Zealand, South Afr ...
and master's mate
Master's mate is an obsolete rating which was used by the Royal Navy, United States Navy and merchant services in both countries for a senior petty officer who assisted the master. Master's mates evolved into the modern rank of Sub-Lieutenant in t ...
, 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-martial
A court-martial or court martial (plural ''courts-martial'' or ''courts martial'', as "martial" is a postpositive adjective) is a military court or a trial conducted in such a court. A court-martial is empowered to determine the guilt of memb ...
ed 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
The quarterdeck is a raised deck behind the main mast of a sailing ship. Traditionally it was where the captain commanded his vessel and where the ship's colours were kept. This led to its use as the main ceremonial and reception area on bo ...
. 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
Sub-lieutenant is usually a junior officer rank, used in armies, navies and air forces.
In most armies, sub-lieutenant is the lowest officer rank. However, in Brazil, it is the highest non-commissioned rank, and in Spain, it is the second high ...
, and midshipman evolved into naval cadet
Officer Cadet is a rank held by military cadets during their training to become commissioned officers. In the United Kingdom, the rank is also used by members of University Royal Naval Units, University Officer Training Corps and University A ...
.
Usage in navies
Canada
There are two petty officer ranks in the Royal Canadian Navy
The Royal Canadian Navy (RCN; french: Marine royale canadienne, ''MRC'') is the Navy, naval force of Canada. The RCN is one of three environmental commands within the Canadian Armed Forces. As of 2021, the RCN operates 12 frigates, four attack s ...
. Petty officer, 2nd class
Petty may refer to:
People
* Bruce Petty (born 1929), Australian political satirist and cartoonist
* Bryce Petty (born 1991), American football player
* Dini Petty (born 1945), Canadian television and radio host
* Eric D. Petty (born 1954), Amer ...
(PO2) (''maître de deuxième classe'' or ''m2'' in French
French (french: français(e), link=no) may refer to:
* Something of, from, or related to France
** French language, which originated in France, and its various dialects and accents
** French people, a nation and ethnic group identified with Franc ...
) is equivalent to a sergeant
Sergeant (abbreviated to Sgt. and capitalized when used as a named person's title) is a rank in many uniformed organizations, principally military and policing forces. The alternative spelling, ''serjeant'', is used in The Rifles and other uni ...
and petty officer, 1st class
Petty officer first class (PO1) is a rank found in some navies and maritime organizations.
Canada
Petty officer, 1st class, PO1, is a Naval non-commissioned member rank of the Canadian Forces. It is senior to the rank of petty officer 2nd-cl ...
(PO1) (''maître de première classe'' or ''m1'') is equivalent to a warrant officer
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 ranks, the mos ...
.
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.
India
A petty officer is a non-commissioned officer
A non-commissioned officer (NCO) is a military officer who has not pursued a commission. Non-commissioned officers usually earn their position of authority by promotion through the enlisted ranks. (Non-officers, which includes most or all enli ...
in the Indian Navy
The Indian Navy is the maritime branch of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Navy. The Chief of Naval Staff, a four-star admiral, commands the navy. As a blue-water navy, it operates sig ...
, equivalent to the NATO
The North Atlantic Treaty Organization (NATO, ; french: Organisation du traité de l'Atlantique nord, ), also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 member states – 28 European and two No ...
rank
Rank is the relative position, value, worth, complexity, power, importance, authority, level, etc. of a person or object within a ranking, such as:
Level or position in a hierarchical organization
* Academic rank
* Diplomatic rank
* Hierarchy
* H ...
enlisted grade of OR-6. They are equal in rank to a sub inspector of police in the Indian Police Services, or sergeant
Sergeant (abbreviated to Sgt. and capitalized when used as a named person's title) is a rank in many uniformed organizations, principally military and policing forces. The alternative spelling, ''serjeant'', is used in The Rifles and other uni ...
in the Indian Army
The Indian Army is the land-based branch and the largest component of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Army, and its professional head is the Chief of Army Staff (COAS), who is a four- ...
and Indian Air Force
The Indian Air Force (IAF) is the air arm of the Indian Armed Forces. Its complement of personnel and aircraft assets ranks third amongst the air forces of the world. Its primary mission is to secure Indian airspace and to conduct aerial w ...
. A petty officer is superior
Superior may refer to:
*Superior (hierarchy), something which is higher in a hierarchical structure of any kind
Places
*Superior (proposed U.S. state), an unsuccessful proposal for the Upper Peninsula of Michigan to form a separate state
*Lake ...
in rank to a leading rate
Leading rating (or leading rate) is the most senior of the junior rates in the Royal Navy. It is equal in status to corporal, as the Royal Navy is the "Senior Service" and oldest service. Leading rates are permitted entry to and full use of cor ...
and subordinate
A hierarchy (from Greek: , from , 'president of sacred rites') is an arrangement of items (objects, names, values, categories, etc.) that are represented as being "above", "below", or "at the same level as" one another. Hierarchy is an important ...
to a chief petty officer
A chief petty officer (CPO) is a senior non-commissioned officer in many navies and coast guards.
Canada
"Chief petty officer" refers to two ranks in the Royal Canadian Navy. A chief petty officer 2nd class (CPO2) (''premier maître de deuxi ...
, 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.
United Kingdom
In the Royal Navy
The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against F ...
, the rate of petty officer comes above that of leading rating and below that of chief petty officer
A chief petty officer (CPO) is a senior non-commissioned officer in many navies and coast guards.
Canada
"Chief petty officer" refers to two ranks in the Royal Canadian Navy. A chief petty officer 2nd class (CPO2) (''premier maître de deuxi ...
. It is the equivalent of sergeant
Sergeant (abbreviated to Sgt. and capitalized when used as a named person's title) is a rank in many uniformed organizations, principally military and policing forces. The alternative spelling, ''serjeant'', is used in The Rifles and other uni ...
in the Royal Marines
The Corps of Royal Marines (RM), also known as the Royal Marines Commandos, are the UK's special operations capable commando force, amphibious light infantry and also one of the five fighting arms of the Royal Navy. The Corps of Royal Marine ...
, British Army
The British Army is the principal land warfare force of the United Kingdom, a part of the British Armed Forces along with the Royal Navy and the Royal Air Force. , the British Army comprises 79,380 regular full-time personnel, 4,090 Gurk ...
and Royal Air Force
The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) and ...
. Petty officer is the lowest of the senior rating grades. Petty officers, like all senior rates, wear "fore and aft" rig.
United States
The title of petty officer in the United States Navy
The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
and United States Coast Guard
The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, mult ...
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
Petty may refer to:
People
* Bruce Petty (born 1929), Australian political satirist and cartoonist
* Bryce Petty (born 1991), American football player
* Dini Petty (born 1945), Canadian television and radio host
* Eric D. Petty (born 1954), Amer ...
is equivalent in paygrade to staff sergeant
Staff sergeant is a rank of non-commissioned officer used in the armed forces of many countries. It is also a police rank in some police services.
History of title
In origin, certain senior sergeants were assigned to administrative, supervi ...
in the United States Army and Marine Corps, and technical sergeant
Technical sergeant is the name of two current and two former enlisted ranks in the United States Armed Forces, as well as in the U.S. Civil Air Patrol. Outside the United States, it is used only by the Philippine Army, Philippine Air Force and th ...
in the United States Air Force and United States Space Force. Petty officer, second class
Petty officer second class is the fifth enlisted rank in the U.S. Navy and the U.S. Coast Guard, just above petty officer third class and below petty officer first class, and is a non-commissioned officer. It is equivalent to the rank of serge ...
is equivalent in paygrade to sergeant
Sergeant (abbreviated to Sgt. and capitalized when used as a named person's title) is a rank in many uniformed organizations, principally military and policing forces. The alternative spelling, ''serjeant'', is used in The Rifles and other uni ...
in the United States Army, Marine Corps, and Space Force, and staff sergeant
Staff sergeant is a rank of non-commissioned officer used in the armed forces of many countries. It is also a police rank in some police services.
History of title
In origin, certain senior sergeants were assigned to administrative, supervi ...
in the United States Air Force. Petty officer, third class is equivalent in paygrade to corporal
Corporal is a military rank in use in some form by many militaries and by some police forces or other uniformed organizations. The word is derived from the medieval Italian phrase ("head of a body"). The rank is usually the lowest ranking non ...
in the United States Army
The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, cla ...
, corporal in the United States Marine Corps
The United States Marine Corps (USMC), also referred to as the United States Marines, is the maritime land force service branch of the United States Armed Forces responsible for conducting expeditionary and amphibious operations through combi ...
, senior airman in the United States Air Force
The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Signal ...
, and specialist 4 in the United States Space Force
The United States Space Force (USSF) is the space service branch of the U.S. Armed Forces, one of the eight U.S. uniformed services, and the world's only independent space force. Along with its sister branch, the U.S. Air Force, the Space ...
.
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.
Non-English-speaking countries
In some countries the same term is used as for a non-commissioned officer (NCO) in land forces, e.g. "suboficial" in some Spanish-speaking countries. The Russian equivalent is ''Starshina
( rus, старшина, p=stərʂɨˈna, a=Ru-старшина.ogg or in Ukrainian transliteration) is a senior non-commissioned rank or designation in the military forces of some Slavic states, and a historical military designation.
In army ...
''.
See also
* Boatswain's mate (disambiguation)
*List of United States Navy ratings
United States Navy ratings are general Enlisted rank, enlisted Job (role), occupations used by the United States Navy, U.S. Navy since the 18th century, which denote the specific skills and abilities of the sailor. Each naval rating has its own ...
*Royal Navy ratings rank insignia
This is a list of Royal Navy ratings rank insignia.
Insignia Royal Navy
Royal Marines
Trade (branch) badges
Ratings in the Royal Navy include trade badges on the right sleeve to indicate a specific job. The information on the left arm is th ...
*United States Navy enlisted rates
In the United States Navy, a ''rate'' is the military rank of an enlisted sailor, indicating where the sailor stands within the chain of command, and also defining one's pay grade. However, in the U.S. Navy, only officers carry the term ''rank ...
References
{{Reflist, 2
Military ranks of the Commonwealth
Military ranks of Australia
Military ranks of Canada
Military ranks of the Royal Navy
Military ranks of the United States Navy
Naval ranks
Marine occupations