From left to right: a Special Warfare Operator 1st class and a Boatswain's Mate 2nd class.

United States Navy ratings are general occupations that consist of specific skills and abilities. Each naval rating has its own specialty badge, which is typically worn on the left sleeve of their uniforms by all enlisted personnel in that particular field. Working uniforms, such as camouflage Battle Dress Uniforms, utilities, coveralls, and Naval Work Uniform, wear generic rate designators that exclude the rating symbol. Officers do not have ratings; their occupations are classified by designators and professional staff corps.^[1] Ratings should not be confused with "rates", which describe the Navy's enlisted pay-grades. Image File history File linksMetadata No higher resolution available. ... Image File history File linksMetadata No higher resolution available. ... The term rating or rate carries different meanings depending on which navy is being discussed. ... It has been suggested that this article or section be merged into Military service. ... An example of common camouflage The Bronze Horseman camouflaged from the German aircraft during the Siege of Leningrad (August 8, 1941) Camouflage became an essential part of modern military tactics after the increase in accuracy and rate of fire of weapons at the end of the 19th century. ... Battle Dress Uniform (BDU) in the United States was the standard military uniform worn into combat, battledress as opposed to display dress uniforms worn at parades and functions. ... 1917 recruiting poster for the United States Navy, featuring a woman wearing the most widely recognized uniform, the enlisted dress blues. ... 1917 recruiting poster for the United States Navy, featuring a woman wearing the most widely recognized uniform, the enlisted dress blues. ... 1917 recruiting poster for the United States Navy, featuring a woman wearing the most widely recognized uniform, the enlisted dress blues. ... An officer is a member of a military, naval, or if applicable, other uniformed services who holds a position of responsibility. ... 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. ... Navy Dental Corps Navy Chaplain Corps Navy Civil Engineer Corps (which includes the Seabees) Judge Advocate Generals Corps (also known as JAG) Navy Medical Corps Navy Medical Service Corps Navy Nurse Corps Navy Supply Corps ... These charts represents the U.S. Navy and US Coast Guard enlisted rate insignia (the rating symbols are depicted are for a boatswains mate). ...

Enlisted sailors are referred to by their rating and rate. For example, if someone's rate is Petty Officer 2nd Class and his rating is Boatswain's Mate; when combined, Boatswain's Mate 2nd Class (BM2) defines both.^[2]

History

The U.S. Navy's enlisted occupational system is a product of more than 200 years of Naval evolution. The Navy of the United Colonies of the 1775 era offered only a few different jobs above the ordinary level of seaman. These included Boatswain's Mate, Quartermaster, Gunner's Mate, Master-at-Arms, Cook, Armorer, and Coxswain. These were titles of the jobs that individuals were actually performing and became the basis for petty officers and ratings. During this time, ship crews were taken from civilian life and enlisted for only one cruise, thus making the job at hand rather than career possibilities the primary consideration. It was not until 1841 that distinguishing marks for a rating were prescribed in the Regulations of the Secretary of the Navy and specialty marks were not added to enlisted men’s uniforms until 1866. The marks consisted of the tools or instruments used in each rating's specific duty. The Master-at-Arms, the police officer of a ship, wore the star of authority and the Gunner’s Mate wore two crossed cannons. Currently, all specialty marks for new ratings are approved by the Permanent Naval Uniform Board which is a division of the Bureau of Naval Personnel.^[3] USN redirects here. ... In 1775, the British claimed authority over the red and pink areas on this map and Spain ruled the orange. ... The bosun of a civilian sail-training ship. ... Quartermaster refers to two different military occupations. ... The rating badge for Gunners Mate, two crossed cannons. ... A Master-at-Arms (MAA) is a rating responsible for discipline aboard a naval ship. ... Look up cook, Cook in Wiktionary, the free dictionary. ... An armorer or armourer (see spelling differences) was in former times a smith who specialized in manufacturing and repairing arms and armour. ... The coxswain (pronounced cox-É™n; often called the cox) is the person in charge of a boat, particularly its navigation and steering. ... A Petty Officer is a noncommissioned officer or equivalent in many navies. ... Flag of the United States Secretary of the Navy. ...

As the Navy’s rating system has changed so has the Navy. The first steamship, mine, radar, torpedo, aircraft carrier, and many other “firsts” all established a new era in the Navy, and each directly impacted the enlisted occupation structure. During World War II, the Navy also briefly maintained a rating of Specialist, similar to the rank in the United States Army. The rating of Specialist was discontinued in 1948. Paddle steamers - Lucerne-Switzerland Left: original paddlewheel from a paddle steamer on the lake of Lucerne. ... Polish wz. ... For other uses, see Radar (disambiguation). ... The torpedo, historically called a locomotive torpedo, is a self-propelled explosive projectile weapon, launched above or below the water surface, propelled underwater toward a target, and designed to detonate on contact or in proximity to a target. ... Four aircraft carriers, (bottom-to-top) Principe de Asturias, amphibious assault ship USS Wasp, USS Forrestal and light V/STOL carrier HMS Invincible, showing size differences of late 20th century carriers An aircraft carrier is a warship designed to deploy and recover aircraft, acting as a sea-going airbase. ... Combatants Allied powers: China France Great Britain Soviet Union United States and others Axis powers: Germany Italy Japan and others Commanders Chiang Kai-shek Charles de Gaulle Winston Churchill Joseph Stalin Franklin Roosevelt Adolf Hitler Benito Mussolini Hideki Tōjō Casualties Military dead: 17,000,000 Civilian dead: 33,000... Specialist arm patch (U.S. Army) Specialist is one section of the fourth enlisted rank in the U.S. Army, just above Private First Class and below Corporal. ... The United States Army is the largest, and by some standards oldest, established branch of the armed forces of the United States and is one of seven uniformed services. ...

After more than 200 years of evolution, today’s Navy enlisted rating structure still plays a key role in career development, serves as a basis for training, detailing, advancement, and simply keeping tabs on several hundred thousand Navy Personnel.^[3]

Rating structure

The pay grades E-4 (Petty Officer Third Class) through E-9 (Master Chief Petty Officer) fall within the rating structure. It is further broken down into four types of ratings and classifications; General ratings, which consist of broad occupational fields such as Electronics Technician, Machinist's Mate, or Machinery Repairman. Service ratings, that are made up of sub categories of general ratings that require further specialized training and qualifications. Service ratings are established, changed and removed depending on service requirements and changes in the way personnel are managed. Navy Enlisted Classifications (NEC), are numerical codes attached to a specific rating and are frequently used to indicate specialized qualifications and Emergency ratings. Finally, Emergency ratings are specific ratings that can be established in time of war and are distinguished by a letter of the alphabet enclosed in a diamond.^[2] U.S. Navy Good conduct variation U.S. Navy Petty Officer Third Class insignia Petty Officer Third Class is the fourth enlisted rank in the U.S. Navy and U.S. Coast Guard, just above Seaman and below Petty Officer Second Class, and is the lowest form of non-commissioned... U.S. Navy Good conduct variation U.S. Navy Petty Officer Third Class insignia Petty Officer Third Class is the fourth enlisted rank in the U.S. Navy and U.S. Coast Guard, just above Seaman and below Petty Officer Second Class, and is the lowest form of non-commissioned... Good conduct variation Master Chief Petty Officer insignia Master Chief Petty Officer Sleeve Insignia Master Chief Petty Officer is the ninth, and highest, enlisted rank (E-9) in the U.S. Navy and U.S. Coast Guard, just above Senior Chief Petty Officer, and is a non-commissioned officer. ... Good conduct variation Master Chief Petty Officer insignia Master Chief Petty Officer Sleeve Insignia Master Chief Petty Officer is the ninth, and highest, enlisted rank (E-9) in the U.S. Navy and U.S. Coast Guard, just above Senior Chief Petty Officer, and is a non-commissioned officer. ... Alternative meaning: Can refer to a civilian industrial occupation, testing or troubleshooting electronic systems. ... Machinists Mate (or MM) is a rating in the United States Navys engineering community. ... Machinery Repairmanrating insignia Machinery Repairman (abbreviated as MR) is a United States Navy occupational rating. ... The Navy Enlisted Classification (NEC) system supplements the rating designators for enlisted members of the United States Navy. ...

Aviation

Insignia	General rating	Abbreviation	Service rating	Abbreviation
	Aviation Boatswain's Mate	AB[I]	(Launching & Recovery) (Fuels) (Aircraft Handling)	ABE ABF ABH
	Aviation Boatswain's Mates are responsible for aircraft catapults, arresting gear and barricades. They operate fuel and lube oil transfer systems, as well as direct aircraft on the flight deck and in hangar bays before launch and after recovery. They use tow tractors to position planes and operate support equipment used to start aircraft.[4]
	Air-Traffic Controller	AC
	Air-Traffic Controllers assist with the speedy flow of air traffic by directing and controlling aircraft. They operate field lighting systems and communicate with aircraft. They furnish pilots with information regarding traffic, navigation and weather conditions, as well as operate and adjust ground-controlled approach (GCA) systems and interpret targets on radar screens and plot aircraft positions.[4]
	Aviation Machinist's Mate	AD[III]
	Aviation Machinist's Mates are usually assigned to billets concerned with the maintenance of turbo-jet aircraft engines and associated equipment. They are responsible for the maintenance and replacement of aircraft engines and accessories, as well as performing the duties of flight engineers.[4]
	Aviation Electrician's Mate	AE[IV]
	Aviation Electrician's Mates are responsible for aircraft electrical power generating and converting systems. They maintain lighting, control, and indicating systems and can install as well as maintain flight and engine instrument systems.[4]
	Aerographer's Mate	AG
	Aerographer's Mates are the U.S. Navy's weather forecasters. They are trained in meteorology and the use of aerological instruments that monitor air pressure, temperature, humidity, wind speed, and direction. They prepare weather maps and forecasts and can analyze atmospheric conditions to determine the best flight levels for aircraft. An AG can measure wind and air density to aid the accuracy of anti-aircraft firing, shore bombardment and delivery of weapons by aircraft.[4]
	Aviation Structural Mechanic	AM[II][III]	(Safety Equipment) (Hydraulics and Structures)	AME AM
	Aviation Structural Mechanics are responsible for the maintenance of many aircraft parts such as wings, fuselage, tail, control surfaces, and landing gear. They maintain and repair safety equipment and hydraulic systems.[4]
	Aviation Ordnanceman	AO
	Aviation Ordnancemen operate and handle aviation ordnance equipment. They are responsible for the maintenance of guns, bombs, torpedoes, rockets, and missiles. Their duties include the stowing, issuing, and loading of munitions and small arms.[4]
	Aviation Support Equipment Technician	AS
	Aviation Support Equipment Technicians perform intermediate maintenance on aviation accessory equipment at naval air stations and aboard aircraft carriers. They maintain gasoline and diesel engines, gas turbine compressor units and electrical systems.[4]
	Aviation Electronics Technician	AT[IV]
	Aviation Electronics Technicians are responsible for the maintenance of all aircraft radio, radar, and other rapid communications devices. They maintain all navigation equipment.[4]
	Aviation Warfare Systems Operator	AW
	Aviation Warfare Systems Operators operate airborne radar and electronic equipment used in detecting, locating, and tracking submarines. They provide information for aircraft and surface navigation and act as helicopter-rescue crewmen, and function as part of the flight crew on long-range and intermediate-range aircraft.[4]
	Aviation Maintenance Administrationman	AZ
	Aviation Maintenance Administrationmen perform clerical, administrative, and managerial duties necessary to keep aircraft maintenance activities running smoothly. They schedule and coordinate the maintenance workload, including inspections and modifications to aircraft and equipment.[4]
	Aircrew Survival Equipmentman	PR
	Aircrew Survival Equipmentmen are responsible for the packing and care of parachutes. They maintain flight clothing, rubber life rafts, life jackets, oxygen-breathing apparatus, protective clothing, and air-sea rescue equipment.[4]

Image File history File links No higher resolution available. ... Aviation Boatswains Mate (abbreviated as AB) is a United States Navy occupational rating. ... u suk usuk u suk u suk u suk u suk u suk u suk u suk u suk usuk suk suk suk suk suk suk suk suk suk suk suk suk suk suk suk suk{| class=wikitable |- ! header 1 ! header 2 ! header 3 |- | row 1, cell 1 | row 1... An aircraft about to catch the wire An aircraft coming to a stop, with the arrestor cable housing in the foreground Arrestor cables or arrestor wires are thick steel cables fitted to the aft end of the flight deck on CATOBAR and STOBAR aircraft carriers. ... For other uses, see Fuel (disambiguation). ... Synthetic motor oil being poured. ... This article or section does not cite its references or sources. ... Image File history File links No higher resolution available. ... Air Traffic Controller rating insignia Air Traffic Controller (abbreviated to AC) is a United States Navy occupational rating. ... This article is about determination of position and direction on or above the surface of the earth. ... For the geological process, see Weathering or Erosion. ... In aviation a ground-controlled approach (GCA), is a type of precision instrument approach, used to guide aircraft to a safe landing in adverse weather conditions. ... Image File history File links No higher resolution available. ... Aviation Machinists Mate rating insignia Aviation Machinists Mate (abbreviated as AD) is a United States Navy occupational rating. ... Jet engine diagram Turbojets are the simplest and oldest kind of general purpose jet engine. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... In aviation, a flight engineer (also referred to as systems operator ) is a member of the aircrew of an aircraft who is responsible for checking the aircraft before and after each flight, and for monitoring aircraft systems during flight. ... Image File history File links No higher resolution available. ... Aviation Electricians Mate rating insignia Aviation Electricians Mate (abbreviated as AE) is a United States Navy occupational rating. ... A flight control system consists of the flight control surfaces, the respective cockpit controls, connecting linkage, and necessary operating mechanisms to control aircraft in flight. ... A primary flight display is a modern aircraft instrument dedicated to flight information. ... A primary flight display is a modern aircraft instrument dedicated to flight information. ... Image File history File links No higher resolution available. ... Aerographers Mate (abbreviated as AG) is a United States Navy occupational rating. ... // Meteorology (from Greek: μετέωρον, meteoron, high in the sky; and λόγος, logos, knowledge) is the interdisciplinary scientific study of the atmosphere that focuses on weather processes and forecasting. ... Atmospheric pressure is the pressure at any given point in the Earths atmosphere. ... For other uses, see Temperature (disambiguation). ... The term humidity is usually taken in daily language to refer to relative humidity. ... This article or section does not adequately cite its references or sources. ... Wind direction is the direction from which the wind is blowing. ... A surface weather analysis for the United States on October 21, 2006. ... Modern weather predictions aid in timely evacuations and potentially save lives and property damage Human beings have attempted to predict the weather since time immemorial. ... Atmosphere may refer to: a celestial body atmosphere, e. ... American troops man an anti-aircraft gun near the Algerian coastline in 1943 Anti-aircraft, or air defense, is any method of combating military aircraft from the ground. ... A bombardment is an attack by artillery fire directed against fortifications, troops or towns and buildings. ... Image File history File links No higher resolution available. ... Aviation Structural Mechanic rating insignia Aviation Structural Mechanic (abbreviated as AM) is a United States Navy occupational rating. ... For other uses, see Wing (disambiguation). ... The fuselage can be short, and seemingly unaerodynamic, as in this Christen Eagle 2 The fuselage (from the French fuselé spindle-shaped) is an aircrafts main body section that holds crew and passengers or cargo. ... A scorpion tail The tail is the section at the rear end of an animals body; in general, the term refers to a distinct, flexible appendage to the torso. ... Aircraft flight controls allow a pilot to guide a plane to a destination. ... Main and nosewheel undercarriage of a Qatar Airways Airbus A330 The undercarriage or landing gear is equipment which supports an aircraft when it is not flying. ... Hydraulics is a branch of science and engineering concerned with the use of liquids to perform mechanical tasks. ... Image File history File links No higher resolution available. ... Aviation Ordnanceman rating insignia Aviation Ordnanceman (abbreviated as AO) is a United States Navy occupational rating. ... For other uses, see Weapon (disambiguation). ... This article is about firearms and similar devices. ... This article is about explosive devices. ... A modern torpedo, historically called a self propelled torpedo, is a self-propelled guided projectile that (after being launched above or below the water surface) operates underwater and is designed to detonate on contact or in proximity to a target. ... US Smarties (by Ce De Candy) US Smarties (by Ce De Candy) In the United States, Smarties are a type of artificially fruit-flavored candy produced by Ce De Candy. ... A missile (British English: miss-isle; U.S. English: missl) is, in general, a projectile—that is, something thrown or otherwise propelled. ... Materiel (from the French for material) is the equipment and supplies in Military and commercial supply chain management. ... Small arms captured in Fallujah, Iraq by the US Marine Corps in 2004 The term small arms generally describes any number of smaller infantry weapons, such as firearms that an individual soldier can carry. ... Image File history File links No higher resolution available. ... Aviation Support Equipment Technician rating insignia Aviation Support Equipment Technician (abbreviated as AS) is a United States Navy occupational rating. ... A Naval Air Station is an airbase of the United States Navy. ... This is a list of all the aircraft carrier, light carrier and escort carrier classes that have served in the United States Navy. ... A colorized automobile engine The internal combustion engine is an engine in which the combustion of fuel and an oxidizer (typically air) occurs in a confined space called a combustion chamber. ... Diesel engines in a museum Diesel generator on an oil tanker A diesel engine is an internal combustion engine which operates using the Diesel cycle. ... This machine has a single-stage centrifugal compressor and turbine, a recuperator, and foil bearings. ... A gas compressor is a mechanical device that increases the pressure of a gas by reducing its volume. ... Image File history File links No higher resolution available. ... It has been suggested that this article or section be merged with Aviation Electronics Technican (United States Navy rating). ... A Bendix/King KY197 Airband VHF communication radio mounted above a Cessna ARC RT-359A Transponder (the beige box) in a light airplane instrument panel. ... For other uses, see Radar (disambiguation). ... This article is about determination of position and direction on or above the surface of the earth. ... Image File history File links No higher resolution available. ... Aviation Warfare Systems Operator rating insignia Aviation Warfare Systems Operator (abbreviated as AW) is a United States Navy occupational rating. ... For other uses, see Radar (disambiguation). ... USS Los Angeles A submarine is a specialized watercraft that can operate underwater. ... This article is about determination of position and direction on or above the surface of the earth. ... For other uses, see Helicopter (disambiguation). ... Aircrew members may include pilots, flight attendants, flight engineers, navigators, Taccos, signallers, observers, (air) gunners, weapons specialists, loadmasters and various electronics system operators depending on the age during which the aircraft operated and the type of operations. ... Image File history File links No higher resolution available. ... Aviation Maintenance Administrationman rating insignia Aviation Maintenance Administrationman (abbreviated as AZ) is a United States Navy occupational rating. ... Clergy is the generic term used to describe the formal religious leadership within a given religion. ... This article is about business administration. ... For other uses, see Management (disambiguation). ... Image File history File links No higher resolution available. ... Aircrew Survival Equipmentman rating insignia Aircrew Survival Equipmentman (abbreviated as PR) is a United States Navy occupational rating. ... Parachutes is the debut album by English rock band Coldplay, released on July 10, 2000 in the UK and on November 7 in the U.S., making it the only Coldplay album to have a delayed release in America. ... A flight suit worn by an SR-71 Blackbird pilot, now in an Air Force museum. ... For the 1944 movie, see Lifeboat (movie). ... A lifejacket is an article of protective clothing that is designed to keep the wearer floating above the surface of the water. ... An Oxygen Breathing Apparatus or OBA is a rebreather. ... // Personal protective equipment (PPE) refers to protective clothing, helmets, goggles, or other gear designed to protect the wearers body or clothing from injury by electrical hazards, heat, chemicals, and infection, for job-related occupational safety and health purposes, and in sports, martial arts, combat, etc. ...

Notes

I^ : ABE, ABF, and ABH combine at paygrade E-9 to the rating of Master Chief Aviation Boatswain's Mate (ABCM).^[5]
II^ : AME and AM combine at paygrades E-7 & E-8 to the ratings of Chief Aviation Structural Mechanic (AMC) and Senior Chief Aviation Structural Mechanic (AMCS) respectively.
III^ : AM and AD combine at paygrade E-9 to the rating of Master Chief Aircraft Maintenanceman (AFCM).
IV^ : AE and AT combine at paygrade E-9 to the rating of Master Chief Avionics Technician (AVCM).

Construction ratings

Insignia	General rating	Abbreviation	Service rating	Abbreviation
	Builder	BU[I]
	Navy builders are like civilian construction workers. They are skilled carpenters, plasterers, roofers, cement finishers, asphalt workers, masons, and painters. They build and repair all types of structures including: piers, bridges, towers, schools, offices, houses, and other buildings.[4]
	Construction Electrician	CE[II]
	Construction Electricians are responsible for the power production and electrical work required to build and operate airfields, roads, barracks, and hospitals. The work of a CE is equivalent to civilian construction electricians, telephone and electrical repairmen, lineman, and others.[4]
	Construction Mechanic	CM[III]
	Construction Mechanics maintain many types of construction machinery including; buses, dump trucks, bulldozers, rollers, cranes, backhoes, and pile drivers. They work on gasoline and diesel engines and transmissions. They also repair electrical, hydraulic, pneumatic and steering systems.[4]
	Engineering Aide	EA[I]
	Engineering Aides provide construction engineers with information needed to develop final construction plans. They conduct surveys for roads, airfields, buildings, etc. They perform soil tests, prepare topographic and hydrographic maps. They also survey for sewers, water lines, drainage systems and underwater excavations.[4]
	Equipment Operator	EO[III]
	Equipment Operators work with heavy machinery such as bulldozers, power shovels, pile drivers, etc. They use this machinery to dig ditches, excavate for building foundations, break up old concrete or asphalt paving and pour new paving. They grade and remove debris from construction sites, raise girders, and move and set in place other pieces of equipment or materials needed for the job.[4]
	Steel Worker	SW[I]
	Steel Workers rig and operate all special equipment used to move or hoist structural steel, structural shapes and similar material. They erect and dismantle steel bridge, piers, buildings, storage tanks, etc. They work with steel shapes, plates and built-up sections used in the construction of overseas facilities. They are skilled in arc welding, MIG welding, TIG welding, and gas welding.[4]
	Utilitiesman	UT[II]
	Utilitiesmen supervise and perform tasks involved in the installation and maintenance of plumbing, steam, compressed air and fuel storage and distribution systems, They maintain air conditioning and refrigeration equipment, as well as sewage collecting and disposal facilities.[4]

Image File history File links No higher resolution available. ... Builder rating insignia Builder (abbreviated as BU) is a United States Navy occupational rating. ... For other uses, see Construction (disambiguation). ... For other uses, see Carpenter (disambiguation). ... Plasterwork, or plastering, is one of the most ancient of handicrafts employed in connection with building operations, the earliest evidence showing that the dwellings of primitive man were erected in a simple fashion with sticks and plastered with mud. ... A roofer specializes in roof construction, concentrating on rafters, beams, and trusses. ... This article refers to the building structure component; for the fraternal organization, see Freemasonry. ... A modern painter and decorator. ... Image File history File links No higher resolution available. ... Construction Electrician rating insignia Construction Electrician (abbreviated as CE) is a United States Navy occupational rating. ... The article on electrical energy is located elsewhere. ... For theatrical electricians, see Electrician (theater). ... For other uses, see Telephone (disambiguation). ... The article on electrical energy is located elsewhere. ... Linemen repairing overhead lines (that supply power to trains) Linemen repairing electricity distribution lines (that supply power to homes) A lineman or linesman is a tradesman who constructs and maintains electric power transmission and distribution facilities. ... Image File history File links No higher resolution available. ... Construction Mechanic rating insignia Construction Mechanic (abbreviated as CM) is a United States Navy occupational rating. ... Autobus redirects here. ... A dump truck or production truck is a truck used for transporting loose material (such as sand, gravel, or dirt) for construction. ... For other uses, see Bulldozer (disambiguation). ... It has been suggested that Steamroller be merged into this article or section. ... A modern crawler type derrick crane with outriggers. ... This article does not cite its references or sources. ... A pneumatic crane working as a pile driver. ... An engine is something that produces some effect from a given input. ... “Gearbox” redirects here. ... Electricity (from New Latin ēlectricus, amberlike) is a general term for a variety of phenomena resulting from the presence and flow of electric charge. ... Table of Hydraulics and Hydrostatics, from the 1728 Cyclopaedia. ... Pneumatics, a subsection of an area called fluid power, is the use of pressurized air to effect mechanical motion. ... Power steering is a system for reducing the steering effort on cars by using an external power source to assist in turning the wheels. ... Image File history File links No higher resolution available. ... Engineering Aide rating insignia Engineering Aide (abbreviated as EA) is a United States Navy occupational rating. ... Surveyor at work with a leveling instrument. ... In agriculture, a soil test is the analysis of a soil sample to determine nutrient content, composition and other characteristics. ... For discussion of land surfaces themselves, see Terrain. ... Hydrography focuses on the measurement of physical characteristics of waters and marginal land. ... For the art of stitching, see Sewing. ... A system of copper water tubes used in a radiator heating system. ... In geomorphology, a drainage system is the pattern formed by the streams, rivers, and lakes in a particular watershed. ... The term archaeological excavation has a double meaning. ... Image File history File links No higher resolution available. ... Equipment Operator rating insignia Equipment Operator (abbreviated as EO) is a United States Navy occupational rating. ... A bulldozer is a powerful crawler (tractor) equipped with a blade. ... Electric shovel is the name given to electrically powered rope shovels. ... A pneumatic crane working as a pile driver. ... A ditch with water can be used for drainage and irrigation. ... A foundation is a structure that transmits loads from a building or road to the underlying ground. ... This article is about the construction material. ... The term asphalt is often used as an abbreviation for asphalt concrete. ... For a pedestrian path situated alongside a road, see sidewalk. ... This page is a candidate to be copied to Wiktionary. ... Image File history File links No higher resolution available. ... Steel Worker rating insignia Steel Worker (abbreviated as SW) is a United States Navy occupational rating. ... For other uses, see Steel (disambiguation). ... // A tank is a container, usually for liquids, sometimes for gases. ... Manual Metal Arc welding, also known as stick or MMA welding is one of the most common forms of welding. ... Gas metal arc welding Gas metal arc welding (GMAW), sometimes referred to by its subtypes metal inert gas (MIG) welding or metal active gas (MAG) welding, is a semi-automatic or automatic arc welding process in which a continuous and consumable wire electrode and a shielding gas are fed through... Tig may refer to: TIG Welding, a metal welding process. ... Oxy-Fuel Welding is a welding process commonly called Oxy-Acetylene Welding, since acetylene is the predominant choice for a fuel, or often simply Gas welding. ... Image File history File links No higher resolution available. ... Utilitiesman rating insignia Utilitiesman (abbreviated as UT) is a United States Navy occupational rating. ... Pneumatics, a subsection of an area called fluid power, is the use of pressurized air to effect mechanical motion. ... Note: in the broadest sense, air conditioning can refer to any form of heating, ventilation, and air-conditioning. ... Refrigeration is the process of removing heat from an enclosed space, or from a substance, and rejecting it elsewhere for the primary purpose of lowering the temperature of the enclosed space or substance and then maintaining that lower temperature. ...

Notes

I^ : BU, EA, and SW combine at paygrade E-9 to the rating of Master Chief Constructionman (CUCM).^[6]
II^ : CE and UT combine at paygrade E-9 to the rating of Master Chief Utilitiesman (UCCM).^[6]
III^ : CM and EO combine at paygrade E-9 to the rating of Master Chief Equipmentman (EQCM).^[6]

Administration, deck, medical, technical, and weapons specialty ratings

Insignia	General rating	Abbreviation	Service rating	Abbreviation
	Boatswain's Mate	BM
	Boatswain's Mates train and supervise personnel in all activities relating to marlinspike, deck, and boat seamanship, and oversee the maintenance of the ship's external structure and deck equipment. They act as petty officers in charge of small craft and may perform duties as master-at-arms, serve in or take charge of gun crews, and damage control parties.[4]
	Culinary Specialist	CS
	Culinary Specialists prepare menus and order the quantities and types of food items. They operate kitchen and dining facilities, manage large facilities, keep records for food supplies and financial budgets, and can even serve as flight attendant aircrewmen. They can also serve as personal food service specialist, Household or Estate Manager or Chef for an admiral, the First Family, President of the United States at Camp David and the White House, to the Vice President at the Naval Observatory or for a commanding officer aboard ship or at shore bases. Ashore, Culinary Specialists often manage and maintain clubs, TAD hotels and Permananent Party naval barracks.[7]
	Cryptologic Technician	CT[I]	(Administrative) (Interpretive) (Maintenance) (Networks) (Collection) (Technical)	CTA CTI CTM CTN CTR CTT
	Cryptologic Technicians control the flow of messages and information. Their work depends on their special branch: CTAs or Administration Cryptologic Technicians (As of 01 OCT 07 CTA merged with the YN rating) perform administrative and clerical duties that control access to classified material. CTIs or Interpretive Cryptologic Technicians handle radiotelephone communications and foreign language translation. CTMs or Maintenance Cryptologic Technicians maintain electronic and electromechanical equipment. CTRs or Collection Cryptologic Technicians handle all Morse code communications and operate radio direction-finding equipment. Finally, CTTs or Technical Cryptologic Technicians handle all communications by means other than Morse code and electronic countermeasures.[4]
	Electronics Technician	ET	(Submarine Navigation) (Submarine Communications) (Nuclear Power)
	Electronics Technicians are responsible for electronic equipment used to send and receive messages, detect enemy planes and ships, and determine target distances. They maintain, repair, and calibrate all electronic equipment used for communications, detection tracking, identification, and navigation. Electronics Technicians are employed onboard nuclear powered ships to maintain the control subsystems in nuclear reactors.[4]
	Fire Controlman	FC
	Fire Controlmen maintain the control mechanism used in weapons systems on combat ships. Complex electronic, electrical and hydraulic equipment is required to ensure the accuracy of Navy guided-missile and surface gunfire-control systems. They are responsible for the operation, routine care and repair of this equipment, which includes radars, computers, weapons direction equipment, target designation systems, gyroscopes and rangefinders.[4]
	Fire Control Technician	FT
	Fire Control Technicians maintain the electronic equipment used in submarine weapons systems. They are responsible for the operation and maintenance of the complex electronic, electrical and mechanical equipment required to ensure the accuracy of Navy guided-missile systems and underwater weapons. They are responsible for ship safety by recognizing and analyzing data from several critical systems including sonar, radar, pericsope, radio, and torpedo inputs. Fire Control Technicians are also responsible for the submarine's internal LAN system.[4]
	Gunner's Mate	GM
	Gunner's Mates operate and maintain all gunnery equipment, guided-missile launching systems, rocket launchers, guns, turrets, and associated equipment. They repair electrical, electronic, hydraulic and mechanical systems, and make detailed casualty analysis. They test ammunition, missiles and their ordnance components. GMs train and supervise personnel in the handling and stowage of ammunition, missiles, and assigned ordnance equipment.[4]
	Hospital Corpsman	HM
	Hospital Corpsmen are medical professionals who provide health care to service people and their families. They serve as pharmacy technicians, medical technicians, nurse's aids, physician's or dentist's assistants, battlefield medics, and more. All work falls into several categories: first aid and minor surgery, patient transportation, patient care, prescriptions and laboratory work, food service inspections, and clerical duties.[4]
	Intelligence Specialist	IS
	Intelligence Specialists are involved in collecting and interpreting intelligence especially secret information about enemies or potential enemies. They analyze photographs and prepare charts, maps, and reports that describe in detail the strategic situation all over the world.[4]
	Information Systems Technician	IT[II]
	Information Systems Technicians design, install, operate, and maintain state-of-the-art informations systems. This technology includes local and wide area networks, mainframe, mini and microcomputer systems and associated peripheral devices. They also write programs to handle the collection, manipulation and distribution of data for a wide variety of applications and requirements. They perform the functions of a computer system analyst, operate telecommunications systems including automated networks and the full spectrum of data links and circuits.[8]
	Legalman	LN
	Legalmen are trained legalaides who assist professionals in the field of law. They work in Navy legal offices, performing administrative and clerical tasks necessary to process claims, conduct court and administrative hearings. They maintain records, documents and legal reference libraries. Legalmen may give advice on tax returns, voter registration procedures, immigration and customs regulations, regulations governing Social Security and