Enlisted Nuclear and Submarine Assignment

Nuclear Trained Chief Petty Officers (CPO's) This group is comprised of Machinist's Mates (MMN), Electrician's Mate (EMN) and Electronic Technician (ETN) ratings that have attained the rank of Chief (CPO/E-7), Senior Chief (SCPO/E-8) or Master Chief Petty Officer (MCPO/E-9).  The job of a Chief is to lead Sailors.  At sea, they mentor and develop other enlisted, provide guidance to officers in addition to supervising the operations and maintenance on Nuclear powered Submarines and Aircraft Carriers around the world.  On shore, the primary duty of a Nuclear Chief is to provide supervision and initial training for all new "Nukes" at one of the commands in the Naval Nuclear Training Pipeline.  To be eligible for CPO a Sailor must be Watch Supervisor qualified (EWS for Subs and PPWS for Surface) at a minimum.  In addition, to be eligible for SCPO in the Submarine community a Sailor must be Engineering Department Master Chief (EDMC) qualified.

Nuclear Electrician Mates (EMN) EMs stand watch on generators, switchboard, control equipment and electrical equipment; operate and perform organizational and intermediate maintenance on power and lighting circuits, electrical fixtures, motors, generators, voltage and frequency regulators, controllers, distribution switchboards and other electrical equipment; test for short circuits, ground or other casualties; and rebuild electrical equipment, including solid state circuitry elements, in an electrical shop. A subset of Electrician's Mates go through the Naval Nuclear Power School and are employed onboard nuclear powered ships and submarines to maintain the control subsystems in nuclear reactors.

Nuclear Electronic Technician (ETN) Nuclear-trained ETs perform duties in nuclear propulsion plants primarily in operating, maintaining, and repairing reactor instrumentation and control systems. Nuclear ETs may be assigned as an operator to a nuclear powered aircraft carrier, as an instructor at a Navy nuclear power training command, or as a technician at a shipyard or other nuclear support facility. Additionally nuclear ETs may volunteer for nuclear submarine service. Nuclear ETs are currently the only rating in the Navy that can qualify as a reactor operator of a Navy Nuclear Propulsion Plant.

Nuclear Machinist's Mates (MMN) The core job of MMs is the engine room. A mechanic's job in the engine room is to operate the reactor and steam plant mechanical systems that provides propulsion, electric power (along with Electrician's Mates), fresh water and air conditioning to the ship. Along with the normal duties of a propulsion mechanic, they are responsible for the operation, maintenance, and repair of all primary and auxiliary equipment in support of the naval reactors under their care. Also, on submarines, some MMs are designated as Submarine Nuclear Propulsion Plant Emergency Welders. They go through a two month school learning  different types of welding and brazing from Hull Maintenance Technician senior enlisted welders. Each submarine is required to have at least one of them to go underway. They are on board to provide emergency repairs to the reactor plant if necessary to get the ship back to port where professional welders can complete a certified repair.

Additionally, some MMNs are designated as Engineering Laboratory Technicians (ELTs) following successful completion of an additional 13 weeks of training. ELTs are water chemistry and radiological controls experts for their commands.

Culinary Specialist (CS) CS' operate and manage Navy messes and living quarters established to subsist and accommodate Naval personnel in addition to many other duties including but not limited to:

Estimate quantities and kinds of food required. Assist Supply Officers in ordering and storage of subsistence items and procurement of equipment and mess gear. Check delivery for quantity and assist medical personnel in inspection for quality. Prepare menus and plan, prepare, and serve meals. Maintain food service spaces and associated equipment in a clean and sanitary condition, including storerooms and refrigerated spaces. Maintain records of financial transactions and submit required reports. Maintain, oversee, and manage quarters afloat and ashore.

Navigation/Communications Electronics Technicians (ET) - Subsurface ETs are divided into two distinct job functions, Navigation and Radio. Subsurface Navigation ETs are responsible for maintaining, operating, and administrating the submarine's navigation and radar equipment, systems and programs. Subsurface Radio ETs are responsible for maintaining, operating, and administrating the submarine's radio communication and ESM equipment, systems and programs, including submarine LAN systems.

Navigation and Radio Electronic Technicians (ET) Subsurface ETs are divided into two distinct job functions, Navigation and Radio. Subsurface Navigation ETs are responsible for maintaining, operating, and administrating the submarine's navigation and radar equipment, systems and programs. Subsurface Radio ETs are responsible for maintaining, operating, and administrating the submarine's radio communication and ESM equipment, systems and programs, including submarine LAN systems.

Fire Control Technicians (FT) FTs perform organizational and intermediate level maintenance on submarine combat control systems, equipment, and associated combat control systems test equipment; operate submarine combat control systems; test submarine combat control systems; operate and maintain combat control systems associated systems; and participate in weapons handling functions and operate and maintain tactical computer systems and peripherals.

Submarine Information Systems Technician (IT) IT is a rating for United States Navy enlisted personnel, specializing in communications technology. ITs 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.

Logistics Specialist (LS) LS' manage inventories of repair parts/general supplies and distribute mail for ships, squadrons, and shore-based activities. They procure, receive, store and issue material and repair components. They utilize financial accounting and database systems to perform inventory and financial management functions. Additionally, they sort and distribute all official and personal mail, manage money order and stamp inventories, and maintain financial and inventory reports.

Machinist Mate (MM-WEP/MM-AUX) The MM-WEP is a Machinist Mate (MM), assigned aboard a Navy submarine, who specializes in maintenance and repair of submarine weapon systems. MM-WEPs are responsible for the shipping, unloading, loading and storage of missiles, weapons and torpedoes of all different types. Theyl work to coordinate and operate a variety of underwater weapons and weapons launch systems, up to and including hydraulic and compressed air launch systems. You cannot get a guarantee for this rating. You can volunteer to become a Submarine Machinist Mate, and you are assigned to either MM-AUX (Machinist Mate for submarine auxilary equipment), or MM-WEP during the training pipeline.

The other major place to find Machinist's Mates is in the Auxiliaries Division of Engineering Department, often referred to as "A-gang". Mechanics in this role establish training & work on mechanical equipment within and outside of the engine rooms. To include the operation and preventive maintenance of: AC&R (Air Conditioning and Refrigeration) units, O2/N2 (liquid oxygen and nitrogen) units, hydraulic lifting and hoisting gear, hydraulic power plant components and mechanisms, chilled and fresh water, atmoshere control, ventilation, emergency diesel and corresponding sub-systemes, ballast control, auxiliary drain, compressed air and gases, plumbing, trash disposal & other equipment as designated by the Engineering Officer (Chief Engineer, or CHENG). Members of "A-Gang" may also help DC Men, Gunner's Mates, or other ratings. Some listed attributes apply to submarine warfare to include SUBSAFE requirements for work authorization. All systems listed apply to a minimum of valve, pump maitenance repair.

Missile Technician (MT) MTs operate, test, maintain, troubleshoot, and repair ballistic missile weapons systems. Aligns, calibrates troubleshoots and repairs all areas of the missile system, launcher system, and various test systems; troubleshoots and repairs digital, electrical, and electronic systems; troubleshoots and repairs cooling and heating systems as well as control systems using electromechanical devices, hydraulics, and pneumatics; uses standard electronic test equipment such as meters, oscilloscopes, logic probes, and logic analyzers; uses DOS-based computers for word processing as well as other administrative record keeping tasks.

Sonar Technician Submarine (STS) STSs, Submarine operate (control, evaluate, and interpret data) submarine sonar, oceanographic equipment, and submarine auxiliary sonar; coordinate submarine sonar and underwater fire control interface; perform organizational and intermediate maintenance on submarine and allied equipment.
STs are often referred to as "Ping Jockeys" on board vessels, after the sound the SONAR makes when actively transmitting.

Submarine Yeoman (YN) Yeoman is the oldest rating in the United States Navy. Yeomen perform secretarial and clerical work. They deal with visitors, telephone calls and incoming mail. They organize files and operate copy machines and order and distribute supplies. They write and type business and social letters, notices, directives, forms and reports.