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	MS - Mess Management Specialist
[GO BACK]	MSs operate and manage Navy dining facilities and bachelor enlisted quarters. They cook, bake, order, inspect and stow food in Navy dining facilities ashore and afloat. They maintain food service; prepare spaces and equipment; and keep records of transactions and budgets for food service in living quarters ashore.
	MT - Missile Technician
[GO BACK]	MTs assemble, maintain and repair missiles carried by submarines. They maintain the specialized equipment used in these functions. Although missile components and related testing and handling equipment are primarily electrical and electronic, MTs must also work with the mechanical, hydraulic and pneumatic units in the launcher systems, fire control systems and missile flight control systems.
	MU - Musician
[GO BACK]	MUs play in official Navy bands and special groups such as jazz bands, dance bands and small ensembles. They give concerts and provide music for military ceremonies, religious services, parades, receptions and dances. Official unit bands usually do not include stringed instruments, but each MU must be able to play at least one brass, woodwind or percussion instrument. Sailors are selected for this rating through auditions.
	NC - Navy Counselor
[GO BACK]	NCs offer vocational guidance on an individual and group basis to Navy personnel aboard ships and at shore facilities. They assess the interests, aptitudes, abilities and personalities of individuals. This rate is not available to the incoming recruit.
	OS - Operations Specialist
[GO BACK]	OSs operate radar, navigation and communications equipment in shipboard combat information centers (CICs) or bridges. They detect and track ships, planes and missiles. They also operate and maintain identification friend or foe (IFF) systems, electronic countermeasures (ECM) equipment and radio-telephones.
	OT - Ocean Systems Technician
[GO BACK]	OTs operate special electronic equipment used to interpret and document oceanographic data, such as the depth and composition of the ocean floor and how sound travels through water. They operate tape recorders and related equipment, prepare reports and visual displays and convert analyzed data to be used in statistical studies.
	PC - Postal Clerk
[GO BACK]	The Navy operates a large postal system manned by Navy PCs, who have similar duties to their civilian counterparts in the U.S. Postal Service. PCs send mail on its way; collect postage-due mail; prepare customs declarations; collect outgoing mail; cancel stamps. They also perform a variety of record-keeping and reporting duties, which include maintaining an up-to-date directory service and locator file.
	PN - Personnelman
[GO BACK]	PNs provide enlisted personnel with information and counseling about Navy jobs, opportunities for general education and training, promotion requirements and rights and benefits. They also assist enlisted members' families with legal aid or reassignments in hardship situations. PNs keep records up to date, prepare reports, type letters and maintain files.
	QM - Quartermaster
[GO BACK]	QMs assist the navigator and officer of the deck (OOD), steer the ship, take radar bearings and ranges, make depth soundings and celestial observations, plot courses and command small craft. Additionally, they maintain charts, navigational aids and oceanographic publications and records for the ship's log.
	RM - Radioman
[GO BACK]	Naval activities often involve people working at many different locations on land and at sea. RMs operate the radio communications systems that make such complex teamwork possible. RMs operate radio-telephones and radio-teletypes, prepare messages for international and domestic commercial telegraph, and send and receive messages via the Navy system.
	RP - Religious Programs Specialist
[GO BACK]	RPs assist Navy chaplains with administrative and budgetary tasks. They serve as custodians of chapel funds, keep religious documents and stay in contact with religious and community agencies. They also prepare devotional and religious educational materials, set up volunteer programs, operate shipboard libraries, supervise chaplains' offices and perform administrative, clerical and secretarial duties. They train personnel in religious programs and publicize religious activities.
	SH - Ship's Serviceman
[GO BACK]	Both ashore and afloat, SHs manage barber shops, tailor shops, ships' uniform stores, laundries, dry cleaning plants and cobbler shops. They serve as clerks in exchanges, gas stations, warehouses and commissary stores. Some ship's servicemen function as Navy club managers.
	SK - Storekeeper
[GO BACK]	SKs are the Navy's supply clerks. They see that needed supplies are available including everything from clothing and machine parts to forms and food. SKs have duties as civilian warehousemen, purchasing agents, stock clerks and supervisors, retail sales clerks, store managers, inventory clerks, buyers, parts clerks, bookkeepers and even fork lift operators.
	SM - Signalman
[GO BACK]	SMs send and receive various visual messages, handle and route message traffic, operate voice radio and repair visual signaling devices. They also render honors to ships and boats and serve as navigators.
	ST - Sonar Technician
[GO BACK]	STs are responsible for underwater surveillance. They assist in safe navigation and aid in search, rescue and attack operations. They operate and repair sonar equipment and jam enemy sonars. STs track underwater objects and repair antisubmarine warfare fire control equipment and underwater radiotelephones.
	TM - Torpedoman's Mate
[GO BACK]	TMs maintain underwater explosive missiles, such as torpedoes and rockets, that are launched from surface ships, submarines and aircraft. They also maintain launching systems for underwater explosives, and are responsible for shipping and storage of torpedoes and rockets.
	YN - Yeoman
[GO BACK]	YNs perform secretarial and clerical work. They deal with visitors, telephone calls and incoming mail. YNs organize files and operate copy machines and order and distribute supplies. They write and type business and social letters, notices, directives, forms and reports. They maintain files and service records.