Navy Machinery Repairman (MR): Definitive Guide

Machinery breaks down. Parts get old and stop working. When this happens on a Navy ship, someone has to make a new part from raw metal or fix the broken equipment to keep everything running. That person is called a Machinery Repairman.

This is not an office job. You will use your hands, work with big machines, and fix mechanical problems right away. The Navy depends on about 770 Sailors with this job to make parts that cannot be bought from anywhere else.

If you like working with machines, are good at math, and want a skill that you can use in regular jobs outside the Navy, the MR rating is a good choice.

Job Role and Responsibilities

Machinery Repairmen are skilled machine tool operators who manufacture replacement parts and repair engines, propulsion systems, and auxiliary equipment aboard Navy ships, submarines, and shore facilities.

Daily Tasks

Your workday focuses on the machine shop. You will set up and use machines to make metal parts starting from raw materials. This means you will read technical drawings, pick the right materials, measure sizes, and shape parts very accurately.

If a machine breaks, you find out what is wrong, decide if it can be repaired or needs to be replaced, and then fix it. You will use hand tools, measuring tools, and big machines. Keeping records is important, so you write down details about repairs, materials, and how much time you spend on each job.

You will work in different places. Most of the time, you work indoors in machine shops, but sometimes you may go on ships, submarines, or expeditionary units. There, you bring portable tools to do your work on site.

Specific Roles and NEC Codes

The Navy Enlisted Classification system identifies specialized skill sets within the MR rating.

Additional NECs become available as you advance, including supervisory and instructional qualifications.

Mission Contribution

Machinery Repairmen help keep ships ready to go. Ships need working machines to sail. When a part breaks and there is no replacement available, the MR makes a new one.

This skill helps old ships keep working longer and means they do not always need help from land. Your work is very important for the mission. Making just one part can fix an important system.

When ships are far away, your portable machining tools let units fix things on their own. This helps them stay independent and ready.

Technology and Equipment

You will train on and operate several categories of equipment:

Machine Tools:

• Engine lathes and vertical turret lathes
• Milling machines (horizontal and vertical)
• Drill presses (upright and bench)
• Surface and cylindrical grinders
• Boring mills
• Power hacksaws and band saws

CNC Equipment:

• Computer numerically controlled lathes and mills
• CAD/CAM systems for programming and design

Precision Instruments:

• Micrometers (inside, outside, depth)
• Vernier and dial calipers
• Height gauges and depth gauges
• Gauge blocks and precision levels
• Hardness testers

Specialized Equipment:

• Welding and brazing apparatus
• Electroplating baths
• Heat treating furnaces
• Engraving machines
• Flame spraying equipment

Work Environment

Setting and Schedule

Most MRs work inside machine shops where many machines are running at the same time. These machines make noise, throw out small metal pieces, and use special liquids for cutting. Wearing safety gear is required and cannot be skipped.

Work hours depend on where you are assigned:

• Machine shops on land usually follow normal day work hours.
• On ships, you work according to the ship’s schedule, which can include nights, weekends, and standing watches.
• When on duty away from home, you work whenever the machines need fixing.

Leadership and Communication

The chain of command flows as follows:

• Each Sailor reports to the shop’s leading petty officer.
• The leading petty officer reports to the division officer.
• Chief Petty Officers provide technical advice and training.

Communication occurs through:

• Job instructions
• Manuals
• Talking with others
• Shift changes

Sailors receive feedback through:

• Regular meetings
• Written reviews
• Exams for moving up in rank

The Navy evaluates:

• Technical skills
• Leadership abilities
• Observance of safety rules

Team Dynamics and Autonomy

Individual skill is important in this role. You will spend much time working alone on a machine, completing entire jobs by yourself. However, some repairs require help from:

• Other shop workers
• Engineers
• Supply staff

Independence grows with rank:

• New Sailors work under close supervision.
• Senior petty officers plan jobs, assign tasks, and check quality.
• Chiefs set shop rules and collaborate with other departments.

Job Satisfaction and Retention

The MR group is small and focused on special skills. Sailors who enjoy working with their hands usually find the job very satisfying. The work is tangible, creating physical parts that solve problems.

Retention varies by rank:

• Early in their careers, some Sailors leave to pursue other jobs.
• Mid-career Sailors tend to stay if they become proficient at machining.
• Senior petty officers and chiefs often remain until retirement, as skilled machinist jobs are valuable both inside and outside the Navy.

Training and Skill Development

Initial Training

Your training pipeline begins at Recruit Training Command Great Lakes, Illinois. Boot camp lasts approximately 10 weeks and covers military fundamentals, physical fitness, and basic seamanship.

Following boot camp, you attend the Machinery Repairman “A” School at Surface Warfare Engineering School Command Great Lakes.

The “A” School curriculum includes a lot of hands-on practice. You will make real parts by following technical drawings, learn how to choose the right cutting speeds and feeds, and get better at measuring parts accurately. Safety rules are taught and followed all the time.

Graduates get the basic MR NEC (0000) and are sent to their first job location. This could be on a ship, a submarine, or a shore base. The exact place depends on what the Navy needs and your own qualifications.

Advanced Training

As you gain experience, additional training opportunities become available:

• C Schools: Specialized training in advanced machining techniques, CNC programming, quality assurance, or specific equipment types. These typically occur after you have reached E-4 or E-5 and have demonstrated proficiency in basic skills.

• Leadership Training: The Navy provides formal leadership courses at specific career milestones. Petty Officer Indoctrination occurs after making E-4. Chief Petty Officer Academy follows selection to E-7.

• USMAP: The United Apprenticeship program allows you to earn journeyman certification in inside machinist work while serving on active duty. This credential transfers directly to civilian employment.

• Degree Programs: Tuition Assistance pays for college courses during off-duty hours. Many MRs pursue degrees in mechanical engineering technology, industrial management, or related fields.

Career Progression Path

Physical Demands and Medical Evaluations

Physical Requirements

This job involves hard physical work. You will need to lift metal pieces that weigh up to 50 pounds often, and sometimes heavier with help. You will also stand for a long time while working with machines.

You must be good with your hands to make small adjustments and take careful measurements. Being able to see colors well is important because you need to:

• Read color-coded signs
• Understand blueprints that use colors
• Tell the difference between types of metals and finishes

If you have trouble seeing colors, it might be okay depending on how serious it is.

Your hearing must be normal because machine shops are noisy places, but you need to hear alarms, warnings, and radio messages.

You also have to meet Navy body standards and pass the Physical Readiness Test.

Physical Readiness Test Standards

To graduate boot camp and maintain good standing, you must achieve at least “Satisfactory Medium” on the Navy Physical Readiness Test. Current minimums for the youngest age bracket (17-19 years) are:

Standards relax slightly with age. You must maintain physical fitness throughout your career because assignments may require climbing shipboard ladders, working in confined spaces, and carrying equipment.

Medical Evaluations

When you first join, you have to go through a full health check at a Military Entrance Processing Station. You need to tell them about any medical problems you have had. Some health issues might need special permission to join, or they could stop you from joining.

Throughout your time in the military, you will have regular health checkups. Every year, you get physical exams to check your hearing, sight, and overall health. You also have dental exams to make sure your teeth are healthy and you will not have tooth problems while on missions.

If you get hurt, you will get medical care at military hospitals or clinics. The Navy tries hard to help Sailors get better and go back to work as soon as they can.

Deployment and Duty Stations

Deployment Details

Sea duty assignments usually last 36 months for sailors who do not have family members with them and 42 months for those who have dependents like a spouse or children. You will go on a trip with your ship or submarine whenever it goes on one. The length of these trips can change depending on what the mission is and what type of vessel you are on.

Surface ships, which are the large boats that travel on the water, may go on trips that last between 6 and 9 months. These trips can take them to different places like the Mediterranean Sea, the Western Pacific Ocean, or the Arabian Gulf. Submarines, which travel underwater, have trips that can change in length depending on the mission but usually last a few months.

Shore duty assignments alternate with sea duty. These may include:

• Naval Shipyards and Regional Maintenance Centers
• Fleet Readiness Centers
• Recruiting Command
• Training commands
• Joint commands

Location Flexibility

Duty station assignment follows Navy needs first. You can express preferences through your detailer, but there are no guarantees. The rotation between sea and shore duty is predictable, but specific locations depend on billet availability.

Overseas assignments include Japan, Spain, Italy, Bahrain, and other locations. These typically require completion of a first sea tour and demonstrated technical competence.

Family members may accompany you to most shore duty locations and some overseas sea duty stations. Unaccompanied tours occur at specific locations or when family members are prohibited due to medical or other considerations.

Career Progression and Advancement

Career Path

The MR rating offers clear advancement potential from E-1 through E-9. Advancement is competitive and based on performance, examination scores, and billet availability.

Advancement to E-4 through E-6 requires passing Navy-wide advancement examinations and meeting time-in-service requirements. Advancement to Chief Petty Officer (E-7) involves a selection board process that evaluates your entire career record.

Specialization Opportunities

As you advance, you may pursue specialized roles:

• Quality Assurance: Overseeing inspection and certification of machined parts
• Production Control: Planning and scheduling machine shop workload
• Instructor Duty: Training new MRs at “A” School
• Recruiting: Serving as a Navy recruiter
• Recruit Division Commander: Training new Sailors at boot camp
• Command Senior Enlisted Leader: Serving as the senior enlisted advisor to commanders

Role Flexibility and Transfers

You can move sideways to different jobs in the Navy, but this depends on how many people are needed and your skills. Sometimes, if there are too many people in one job and not enough in another, the Navy offers a chance to switch.

If you find that the MR rating is not a good fit for you, talk to your career counselor early. You might be able to change to a different engineering job, try to become an officer, or finish your time and leave the Navy.

Performance Evaluation

The Navy checks how well you do your job through a system called the Evaluation and Fitness Report. You get written reports that talk about what you have done, how you lead others, and your potential for the future. These reports help decide if you can get promoted.

To succeed as a Machinery Repairman:

• Master technical skills quickly. Proficiency with machine tools is your foundation.
• Pursue additional qualifications. Every NEC you earn makes you more valuable.
• Demonstrate reliability. Show up on time, complete jobs correctly, and maintain safety standards.
• Develop leadership. Even as a junior Sailor, mentor those behind you.
• Maintain physical fitness. Sailors who fail PRTs face career limitations.
• Document your achievements. Keep a running record of accomplishments for evaluation input.

Salary and Benefits

Financial Benefits

Military pay consists of basic pay based on rank and time in service, plus allowances and special pays.

Monthly Basic Pay (2026 Rates):

These figures reflect basic pay only. Additional compensation includes:

• Basic Allowance for Housing (BAH): Tax-free allowance based on location, pay grade, and dependency status. Rates vary from approximately $800 to $4,000 monthly depending on these factors.

• Basic Allowance for Subsistence (BAS): $476.95 monthly for enlisted personnel to offset meal costs.

• Career Sea Pay: Additional monthly pay for sea duty assignment, ranging from $50 to $750 depending on pay grade and cumulative sea time.

• Special Duty Assignment Pay: Additional compensation for demanding assignments such as recruiter or RDC duty.

• Enlistment and Reenlistment Bonuses: The Navy offers bonuses for initial enlistment in critical ratings and for reenlistment in undermanned specialties. Bonus amounts vary based on rating, length of commitment, and current needs.

Additional Benefits

• Healthcare: Comprehensive medical and dental care through TRICARE at no cost while on active duty. Dependents receive healthcare at reduced rates.

• Education: Tuition Assistance pays up to $250 per semester hour for college courses during off-duty time. The GI Bill provides substantial educational benefits after service completion.

• Housing: Single junior Sailors typically live in barracks. Those E-4 and above or with dependents may receive BAH to live off-base.

• Retirement: The Blended Retirement System combines a 401(k)-style Thrift Savings Plan with matching contributions and a defined benefit pension after 20 years of service.

• Life Insurance: Servicemembers’ Group Life Insurance provides up to $500,000 coverage at low rates.

• Leave: 30 days of paid annual leave plus federal holidays when operations permit.

• Commissary and Exchange: Access to military grocery stores and retail outlets offering tax-free shopping and discounted prices.

Work-Life Balance

Military service demands sacrifice. Sea duty involves separation from family during deployments. However, the Navy provides support systems including:

• Family readiness groups
• Counseling services
• Child development centers
• Youth programs
• Morale, Welfare, and Recreation facilities

Shore duty typically offers more predictable schedules and greater family time. The sea-shore rotation ensures periods of relative stability between demanding deployments.

Risk, Safety, and Legal Considerations

Job Hazards

Machine shop work can be dangerous. Machines that spin can catch on clothes or jewelry. Cutting tools are very sharp and move quickly. Small pieces of metal fly around when working. Heavy materials need to be lifted carefully to avoid injury.

There are also chemicals involved, like cutting fluids, solvents, and cleaning liquids. These can be harmful if not handled properly. Using good airflow and wearing protective gear helps keep workers safe.

Working on a ship adds extra dangers. There are small spaces to work in, rough weather to deal with, and the usual risks of using machines on the water.

Safety Protocols

The Navy mandates comprehensive safety programs. You will receive training on:

• Machine tool safety and lockout/tagout procedures
• Personal protective equipment use
• Hazardous material handling
• Fire prevention and response
• Electrical safety

Machine shops enforce strict safety rules. Long hair must be tied back or covered. Loose clothing and jewelry are prohibited. Eye protection is mandatory in work areas. Safety violations result in disciplinary action because the consequences of accidents are severe.

Security and Legal Requirements

You must be eligible for a Secret security clearance. This requires:

• U.S. citizenship
• Favorable background investigation
• No significant criminal history
• Financial responsibility
• Foreign contacts and travel disclosure

The clearance process looks into your past by checking your background, talking to people you know, and examining your financial and criminal records. It is very important to be honest during this process. Trying to hide information can cause bigger problems than the information itself.

As a service member, you must follow the Uniform Code of Military Justice, which is a set of rules that works alongside regular laws. This system controls how you behave both when you are working and when you are off duty. If you break these rules, you could face punishments like non-judicial punishment or courts-martial, which are military trials.

When you sign up for the military, you agree to finish your full time of service unless you are officially allowed to leave early. If you break this agreement, you might be separated in a way that affects your future benefits and the type of service you are recorded as having.

Impact on Family and Personal Life

Family Considerations

Military service affects families significantly. Deployments mean months of separation. Even when not deployed, sea duty involves long hours and duty days away from home. Shore duty offers more normal schedules but still requires flexibility.

The Navy provides family support programs:

• Fleet and Family Support Centers offering counseling and referral services
• New parent support programs
• Emergency family assistance
• Relocation assistance for moves

Spouse employment can be challenging due to frequent moves. The Military Spouse Career Advancement Account program provides funding for licenses, certifications, and education to improve employment prospects.

Relocation and Flexibility

You can expect to move to a new place every 2 to 4 years. The military decides where you will go based on what they need. You can say where you would like to go, but the Navy makes the final choice.

Sometimes, you may be sent to a different country. This can give you a chance to learn about new cultures and travel. In some places, your family can come with you, but in others, you might have to live there alone.

Your personal plans need to fit with the military’s needs. You might miss important family events because of deployment or work duties. It is important to be flexible and keep in touch with your family.

Post-Service Opportunities

Transition to Civilian Life

The skills you develop as a Machinery Repairman transfer directly to civilian manufacturing, machining, and maintenance careers. Employers value veterans with technical training and work experience.

Directly Related Careers:

• Machinist
• CNC operator or programmer
• Tool and die maker
• Maintenance mechanic
• Metal fabricator
• Quality control inspector

Related Fields:

• Manufacturing supervisor
• Industrial maintenance manager
• Technical sales representative
• Manufacturing engineer (with additional education)

Civilian Career Prospects

While overall machinist employment is projected to decline slightly, experienced machinists with CNC skills remain in demand. The manufacturing sector requires skilled workers to operate and maintain increasingly complex equipment.

Transition Assistance

The Navy provides transition programs for separating service members:

• Transition Assistance Program (TAP): Mandatory counseling and workshops covering resume writing, job search strategies, financial planning, and VA benefits.

• SkillBridge: Allows participation in civilian job training, internships, or apprenticeships during the final 180 days of service.

• Veterans Affairs Benefits: Healthcare through VA, disability compensation for service-connected conditions, education benefits, and home loan guarantees.

• USMAP Credentialing: The journeyman certification earned through the United Services Military Apprenticeship Program is recognized by civilian employers and unions nationwide.

Qualifications and Eligibility

Basic Qualifications

Waivers may be available for certain disqualifications depending on current Navy needs and individual circumstances. Speak with a recruiter about your specific situation.

Application Process

Step 1: Contact a Recruiter Find a Navy recruiter online or visit a recruiting station. The recruiter will assess your qualifications and explain available programs.

Step 2: Take the ASVAB You must take the Armed Services Vocational Aptitude Battery. This multiple-choice test measures knowledge and aptitude in areas including math, verbal skills, and technical knowledge. The PiCAT (unproctored online version) may be available for initial qualification, followed by verification testing at MEPS.

Step 3: Medical Examination Visit a Military Entrance Processing Station for a comprehensive physical examination. The exam includes vision, hearing, blood tests, and review of medical history.

Step 4: Select Your Job If you qualify for the MR rating and it is available, you may select it. The Navy offers a contract guaranteeing your rating before you ship to boot camp, though availability varies.

Step 5: Enlistment Contract Sign your enlistment contract specifying your rating, ship date, and any enlistment bonuses. Review this document carefully before signing.

Step 6: Shipping to Boot Camp Report to Recruit Training Command Great Lakes on your ship date. The Navy will arrange transportation.

Selection Criteria and Competitiveness

The MR rating takes only a small number of people each year because the community is small. You need to get certain scores on the ASVAB test to qualify. Getting higher scores can help you have a better chance of getting a contract.

Having experience with machines, fixing things, or technical jobs can help your application. But it is not required because the Navy will teach you everything from the beginning.

Being physically fit is important. You do not need to be in perfect shape to join, but if you are ready for the physical work at boot camp, you will do better and not get hurt.

Upon Accession into Service

• Service Obligation: Initial enlistment is typically 4 years of active duty, though some contracts may be 5 or 6 years depending on training requirements and bonus eligibility.

• Entry Rank: Most recruits enter as E-1 (Seaman Recruit). Those with college credits, JROTC experience, or other qualifying factors may enter as E-2 or E-3.

• Recruit Training: You will complete 10 weeks of boot camp at Great Lakes, Illinois, followed immediately by “A” School training.

• First Assignment: Upon completing training, you receive orders to your first duty station. This could be shipboard, submarine, or shore-based depending on Navy needs.

Is This a Good Job for You? The Right (and Wrong) Fit

Ideal Candidate Profile

You will likely succeed as a Machinery Repairman if you:

• Enjoy working with your hands and creating physical objects
• Have strong attention to detail and take pride in precision work
• Can visualize three-dimensional objects from two-dimensional drawings
• Are comfortable with mathematics, particularly geometry and trigonometry
• Work well independently without constant supervision
• Have patience for complex tasks requiring careful measurement
• Want a skill that transfers directly to civilian employment

Potential Challenges

This career path may not suit you if you:

• Prefer desk work or computer-based tasks exclusively
• Dislike loud environments or getting dirty
• Struggle with spatial reasoning or mechanical concepts
• Require constant variety and change (while jobs vary, the core work is machining)
• Are unwilling to deploy or work at sea
• Have difficulty with the disciplined military lifestyle

Career and Lifestyle Alignment

The MR rating suits individuals seeking:

• Technical craftsmanship: You will develop genuine skill in a respected trade
• Tangible results: You produce physical parts you can hold and inspect
• Civilian career preparation: The skills transfer directly to well-paying jobs
• Stable employment: Machinists remain in demand across industries
• Military service with technical focus: You serve while building career skills

It may not suit those seeking:

• Combat or special operations: This is a technical support rating, not a combat role
• Rapid advancement: The small community size limits promotion opportunities compared to larger ratings
• Geographic stability: Frequent moves are part of military life

More Information

Ready to become a Machinery Repairman? Your next step is speaking with a Navy recruiter who can answer specific questions about current availability, bonuses, and ship dates. Recruiters stay current on policy changes and can assess your individual qualifications.

Contact your local Navy recruiting office or visit navy.com to find a recruiter near you. Bring your questions, transcripts, and medical history to your first meeting.

If you are exploring related career fields, consider these other Navy Surface Engineering ratings:

• Machinist’s Mate (MM)
• Damage Controlman (DC)
• Hull Maintenance Technician (HT)
• Gas Turbine Systems Technician (GSM/GSE)

The Navy offers a wide range of technical careers. Compare your options, understand the commitments, and choose the path that aligns with your skills and goals.