U.S. Navy Rating Career Guide
MMA Civilian Careers: Machinist's Mate, Non-Nuclear, Submarine Auxiliary
Navy MMA Sailors operate, maintain, and repair submarine auxiliary systems including damage control equipment, diesel engines, hydraulic systems, atmosphere control, oxygen-generating equipment, refrigeration, compressed air and gas systems, potable water, seawater, sanitary, and plumbing systems. Civilian paths fit industrial maintenance, diesel systems, HVAC, maritime maintenance, facilities utilities, and quality roles.
Official classification grounding
Navy OCCSTDS describes MMA as operating, maintaining, and repairing submarine auxiliary damage control systems, diesel engines, hydraulic systems, atmosphere control, oxygen-generating equipment, refrigeration, compressed air and gas systems, potable water, seawater, sanitary, and plumbing systems.
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Section 01
Top Civilian Role Matches for MMA
Industrial Maintenance Technician Best direct path
$55k – $120k
MMA experience maps to industrial maintenance when the resume names hydraulic, compressed air, refrigeration, water, sanitary, and mechanical systems. Employers need troubleshooting, preventive maintenance, safe isolation, documentation, and uptime impact.
HydraulicsRefrigerationUtilitiesPM
BLS current wage table
Marine Mechanical Technician
$55k – $120k
Submarine auxiliary systems experience can fit shipyard and maritime maintenance roles. Translate submarine terminology into diesel support, plumbing, seawater, potable water, damage control, and atmosphere-control maintenance.
MaritimeAuxiliary systemsDieselRepair
BLS current wage table
Facilities Utilities Technician
$50k – $110k
Potable water, sanitary, plumbing, compressed air, and refrigeration experience can support facilities utilities roles. Civilian licenses vary, so frame Navy experience as hands-on system preparation.
FacilitiesUtilitiesPlumbingCompressed air
BLS current wage table
Diesel or Generator Support Technician
$50k – $110k
Diesel engine and support system maintenance can support fleet, generator, or marine engine roles. Show operating checks, repairs, parts, logs, and return-to-service outcomes.
DieselEnginesLogsSupport systems
BLS current wage table
Maintenance Quality Technician
$55k – $115k
MMA quality assurance and submarine procedure discipline can support QA roles. Employers value inspection records, deficiencies found, corrective actions, and controlled maintenance.
QualityInspectionsRecordsCorrective action
BLS current wage table
Section 02
Transferable Strengths: What Civilian Employers Actually See
◆
Technical discipline
Civilian employers value technicians and operators who follow procedures, document status, control risk, and maintain systems where errors affect safety, readiness, or public performance.
◆
Equipment and system ownership
Name the exact systems, tools, machines, weapons support equipment, instruments, or production assets you operated or maintained so recruiters can map the experience.
◆
Quality and safety habits
Inspection, QA, explosive safety, shop safety, rehearsal standards, and controlled maintenance all transfer when written as standards followed and outcomes protected.
◆
Planning under constraints
Show how you handled schedules, operations, rehearsals, tests, maintenance windows, or mission requirements with limited time and high visibility.
◆
Measurable outcomes
Quantify equipment, performances, repairs, tests, parts, operations, audiences, teams, or records wherever your history supports it.
Section 03
Common Mistakes MMAs Make in the Civilian Job Search
01
Using the rating as the explanation
MMA needs translation into civilian systems, tools, operations, products, or environments. Spell out the function so a recruiter can connect it to a job posting.
02
Overclaiming civilian authority
Military qualifications do not automatically grant civilian licenses, explosives authority, trade credentials, public performance work, or employer authorization. Be precise and honest.
03
Leaving out equipment and scale
The resume should show systems, tools, machines, weapons support equipment, performances, tests, repairs, teams, or audiences. Broad claims do not carry enough proof.
Section 04
Certifications That Can Improve the Signal
OSHA Outreach Training
Cost Pricing varies by provider, membership, or testing pathTime Preparation timeline variesFormat Course, exam, credential, or documented portfolio
OSHA Outreach Training can help translate Navy experience when it matches the civilian target. It does not replace employer, agency, or licensing requirements.
Signal boost · Useful when aligned to target roles
ASE Medium-Heavy Truck Credentials
Cost Pricing varies by provider, membership, or testing pathTime Preparation timeline variesFormat Course, exam, credential, or documented portfolio
ASE Medium-Heavy Truck Credentials can help translate Navy experience when it matches the civilian target. It does not replace employer, agency, or licensing requirements.
Signal boost · Useful when aligned to target roles
NCCER Craft Credentials
Cost Pricing varies by provider, membership, or testing pathTime Preparation timeline variesFormat Course, exam, credential, or documented portfolio
NCCER Craft Credentials can help translate Navy experience when it matches the civilian target. It does not replace employer, agency, or licensing requirements.
Signal boost · Useful when aligned to target roles
Section 05
Resume Translation: From Navy Machinist's Mate, Non-Nuclear, Submarine Auxiliary to Civilian Language
The MMA resume should translate Navy duties into civilian systems, tools, operations, safety, quality, records, and measurable results.
Before: Navy shorthand
Served as MMA. Maintained equipment, supported operations, followed procedures, and kept mission requirements on track.
↓
After: Civilian employer language
Operated, maintained, and repaired submarine auxiliary systems including damage control equipment, diesel support systems, hydraulics, atmosphere control, oxygen generation, refrigeration, compressed air, gas, potable water, seawater, sanitary, and plumbing systems. Completed preventive and corrective maintenance, documented system status, followed safety procedures, and supported reliable submarine operations.
A stronger bullet formula
Start with the civilian function.
Name the system, tool, machine, event, equipment, or process.
Add scale: assets, tests, repairs, operations, audiences, people, or records.
Show the standard: technical publication, safety rule, QA requirement, license gate, or production requirement.
End with the outcome: uptime, readiness, safe operation, quality, schedule recovery, or public impact.
Always quantify: people, equipment, hours, defects, reports, inventory value, or mission volume.
Official duties verified against
Navy OCCSTDS Manual Change 103, July 2025, working copy Navy-OCCSTDS-Change-103-Jul-2025-extracted.md, pages 1213-1226. Salary context uses BLS OOH and OEWS pages cited in each role card. Certification links point to issuing organizations or official program pages and were reviewed on June 15, 2026.
Section 06
MMA Civilian Career FAQs
What civilian jobs fit Navy MMA experience best?
MMA experience fits best where employers need submarine auxiliary systems, procedure discipline, equipment or product ownership, and accountable execution. The best target depends on platform, qualifications, portfolio, systems, and credentials.
Does Navy MMA experience automatically grant civilian credentials?
No. Military experience can support credibility, but civilian licenses, certifications, union rules, agency standards, and employer authorizations are separate. List only credentials actually earned.
How should I write MMA experience on a resume?
Use the rating name once, then translate the work. Name systems, tools, inspections, tests, products, records, operations, teams, audiences, and outcomes.
What should MMAs do before applying?
Choose a primary market, compare postings, identify credential gaps, and rewrite bullets around measurable results. A focused resume is stronger than a broad military summary.
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