Sonar Technician – Submarine (STS): Navy Reserve

In a quiet ocean, sound carries the warning. A submarine listens for it, and the sonar team stays locked in.

The Sonar Technician – Submarine (STS) in the Navy Reserve supports that mission. STSs use sonar systems to detect, track, and report contacts underwater. The crew depends on accurate information and clear reporting.

In the Reserve, you serve part-time while keeping a civilian life. You still train to the same standards and stay ready to mobilize when needed. The work helps the Navy understand what is happening under the surface.

Keep reading. This guide explains what STSs do, how training works, and what the job demands.

Job Role and Responsibilities

Job Description

Enlisted Navy Reserve Sailors specializing as Sonar Technicians – Submarine (STS) operate advanced sonar and oceanographic systems aboard submarines. They detect, track, and classify underwater threats, supporting submarine navigation and undersea warfare operations.

STS Sailors interpret acoustic data, conduct equipment diagnostics, and perform maintenance on classified sonar suites to safeguard the crew and mission.

Daily Tasks

• Operate passive and active sonar systems to detect underwater objects and threats.
• Analyze acoustic signatures and classify contacts based on sonar readings.
• Maintain and repair sonar equipment to ensure operational capability.
• Assist in navigation and targeting using sonar data.
• Brief command on underwater threats and provide real-time assessments.

Specific Roles

Each Sonar Technician (Submarine) holds the Navy rating STS. Additional skills are designated by Navy Enlisted Classification (NEC) codes.

Note: Full NEC listings available through official Navy personnel systems.

Mission Contribution

Sonar Technicians are the submarine’s first line of defense. They track enemy submarines, surface ships, and torpedoes.

Their assessments determine tactical movements. They ensure safe passage through hostile waters. Without them, the submarine is blind.

Technology and Equipment

STS sailors use active and passive sonar systems, acoustic processing computers, and underwater communications gear.

Systems include the AN/BQQ-10 series and Integrated Undersea Surveillance Systems (IUSS).

Many STSs train on cutting-edge acoustic analysis tools and classified undersea warfare systems.

Work Environment

Setting and Schedule

Submarines are sealed spaces built from steel. The Sonar Technician – Submarine works inside that space, often with no natural light for long stretches. The sonar room stays tight and equipment-heavy, with screens and steady background noise.

Life at sea runs on watch rotation. A common schedule is six hours on watch, twelve hours off. Underway periods can run long. About 60 to 180 days submerged is often used as a planning range, though timing depends on the mission and the boat.

On Reserve duty, STS Sailors may work at IUSS sites or support active-duty crews during periods at sea. Shore work still follows an operational pace and a set routine.

Leadership and Communication

The chain of command stays clear and close. STS Sailors report through the sonar team, including the Sonar Supervisor, and coordinate with watch leadership.

During operations, information moves fast between sonar, fire control, and navigation. Reports need to be clear and timely because they support tactical decisions. Briefings tend to stay short. Debriefs focus on what happened and what to fix.

Team Dynamics and Autonomy

Teamwork drives submarine success. STS Sailors may sit alone at a console, but their analysis supports the full crew in real time.

At the same time, the job requires independent judgment. You may need to act quickly, trust your training, and flag what matters. Your report still has to fit into the crew’s coordinated response.

Job Satisfaction and Retention

The work is demanding and the pressure is real. Many STS Sailors stay because they gain rare skills and a clear sense of purpose.

Success often looks simple. Classify contacts correctly. Keep systems working. Earn trust from the crew. For some people, that payoff outweighs the isolation and long stretches underwater.

Training and Skill Development

Initial Training

Training starts in Great Lakes, Illinois. Every enlisted Sailor completes boot camp and learns the basics of Navy service. Boot camp lasts nine weeks.

Next, training moves to Groton, Connecticut for nine weeks at Basic Enlisted Submarine School (BESS). You learn submarine systems, safety rules, and escape procedures. You also learn how crews live and work underway.

After BESS, you attend technical training. Class A School lasts about eighteen weeks. Instruction covers electricity, electronics, and underwater acoustics. By the end, you should understand core sonar equipment and how to support it.

Advanced Training

Advanced training builds capability after the initial pipeline. STS Sailors develop skills tied to the Submarine Electronics/Computer Field (SECF). They work with sonar suites, shipboard computer systems, and other electronics used on submarines. Some work involves classified equipment and controlled procedures.

Training also continues in the fleet. You learn on real consoles, with real operating conditions, alongside qualified crews.

Some Sailors follow specialized NEC pipelines. These can prepare you to maintain specific sonar systems, support division-level work, or contribute to Integrated Undersea Surveillance Systems. Certifications may also apply. Some support electronics work. Others may help with career options after service.

Physical Demands and Medical Evaluations

Physical Fitness Standards

Submarine duty includes tight spaces, long watches, and routine physical strain. STS Sailors spend hours at consoles, then shift quickly during drills or real events.

The Navy runs the Physical Readiness Test (PRT) twice each year. It measures endurance, strength, and core stability. Meeting the minimum matters, but many Sailors train above it to stay ready for long days and emergency response.

Standards set the minimum. Many crews expect consistent fitness beyond that baseline. Submarine spaces can feel cold and crowded, so basic conditioning and recovery habits matter.

Medical Evaluations

Submarine duty requires careful medical screening. Candidates complete a detailed evaluation before entering submarine school. The Navy checks areas that matter most for this environment, including hearing, breathing health, and mental readiness.

Hearing matters because sonar work depends on sound and signal awareness. Mental readiness matters because crews operate in close quarters with limited privacy and long periods underway.

Medical checks continue during your career. These reviews help protect both the individual Sailor and the crew.

Deployment and Duty Stations

Deployment Details

Navy Reserve Sonar Technicians – Submarine serve part-time. Most complete monthly drill weekends plus a two-week annual training period.

The Navy can mobilize Reservists to active duty based on operational needs. When that happens, deployments can vary in length and location. Assignments may be in the United States or overseas.

Reserve time is often stateside, but activation can place STS Sailors on submarines or at shore units worldwide.

Location Flexibility

The Navy assigns duty stations based on mission requirements. You can share preferences, but the Navy does not guarantee them.

Reserve STS Sailors may serve at naval bases, shipyards, IUSS-related sites, or with submarine units. Annual training can take place wherever the Navy operates, including locations outside the United States.

Permanent Change of Station moves happen less often in the Reserve. They can still occur, especially after mobilization or a major unit change.

Career Progression and Advancement

Career Path

Sonar Technicians (Submarines) in the Navy Reserve advance through structured enlisted ranks (or rates). Each rate brings greater technical responsibility and leadership.

Promotion and Growth Opportunities

Promotion in the Navy Reserve follows time-in-rate, exam scores, and evaluations. Advancement demands technical proficiency, leadership, and readiness.

STS sailors also qualify for advanced NECs:

• STS-0415: AN/BQQ-10(V) Sonar Operator
• STS-0416: Sonar Technician Supervisor

Additional paths include:

• Acoustic Intelligence Specialist
• Submarine Tactical Systems Specialist
• Submarine Operations Instructor

Role Flexibility and Transfers

STS sailors can transition into related roles. Lateral transfers to other ratings or NECs are possible based on performance, billet availability, and qualifications. Eligible senior enlisted can apply for:

• Chief Warrant Officer (CWO)
• Limited Duty Officer (LDO)

These paths offer technical leadership positions without requiring a college degree.

Performance Evaluation

STS advancement hinges on Navy-wide advancement exams, periodic evaluations, and qualifications. Evaluations emphasize:

• Technical mastery of sonar systems.
• Tactical decision-making.
• Leadership and mentorship.
• Adherence to Navy Core Values.

How to Succeed

To excel as an STS:

• Master acoustic analysis.
• Lead with discipline and composure under pressure.
• Commit to lifelong learning in undersea warfare.
• Seek out mentorship and pursue advanced NECs.

Salary and Benefits

Financial Benefits

Reserve pay is based on your pay grade, years of service, and the type of orders you are on. DFAS publishes the 2026 reserve drill pay table.

The examples below use 2 years or less of service, a standard drill weekend (4 drills), and 14 days of annual training.

Estimated annual total assumes 12 drill weekends (48 drills) and 14 days of annual training. Taxes, allowances, and special pays can change the total.

When you are on active duty orders, you are paid using the 2026 active duty basic pay table and may qualify for allowances like housing (BAH) and food (BAS). See the BAS rates.

Other pay items can apply based on your assignment and qualifications:

• Career Sea Pay: If you are assigned to qualifying sea duty while on active orders, you may receive career sea pay.
• Submarine Duty Incentive Pay: Qualified Sailors assigned to submarine duty can receive monthly submarine pay while on active orders.

Additional Benefits

• Healthcare: TRICARE Reserve Select is available for many drilling Reservists, with premiums and eligibility that can change by plan year.
• Retirement: Retirement points and a Reserve retirement for qualifying service (often described as 20 good years).
• Education: GI Bill and other education benefits may be available based on eligibility and service.
• Other benefits: Commissary and exchange access, VA home loan eligibility, and other benefits based on status and time in service.

Risk, Safety, and Legal Considerations

Job Hazards

Submarine duty carries real risk. Sonar Technicians work deep underwater in tight spaces, with limited options if something goes wrong.

Common hazards include fire, flooding, mechanical failure, and unsafe air. Long periods underwater can also strain mental health because the environment stays closed in and isolated.

Sonar work can create hearing risk if equipment is misused or volume controls are not handled correctly. In this setting, careful work and steady attention help keep the boat safe.

Safety Protocols

Safety is built on routine and strict standards. Sonar Technicians train often in damage control and emergency response.

Crews drill for fires, flooding, and air hazards. Sailors learn how to isolate problems, seal compartments, and stabilize the boat until the emergency ends. Each crew member also qualifies in submarine survival and escape procedures.

Technical safety rules apply to sonar gear and high-voltage equipment. The Navy uses checklists, testing steps, and backup procedures to reduce errors.

Security and Legal Requirements

All Sonar Technicians (Submarine) must qualify for a Secret security clearance. The process reviews areas such as finances, foreign contacts, and overall conduct. The Navy uses these checks because the job involves sensitive systems.

Reservists also serve under a contract. A common obligation is eight years, split between drilling service and time in the Individual Ready Reserve.

Navy Reserve personnel fall under the Uniform Code of Military Justice. The Navy can recall Reservists for national emergencies, mobilizations, or operational needs.

Impact on Family and Personal Life

Family Considerations

Reserve duty can feel like two jobs at once. Sonar Technicians balance Navy requirements with civilian work and family life.

The part-time structure usually reduces day-to-day disruption. Mobilization can still happen, sometimes with limited notice. Annual training and activation can also create longer separations.

The Navy offers support programs. Navy Family Support Centers can provide counseling, help with money planning, and deployment readiness resources. Eligible family members may also have access to healthcare options, base services, and parts of the military community network.

Relocation and Flexibility

Most Navy Reservists stay near home and drill at their assigned Navy Operational Support Center. Temporary relocation can still happen for mobilizations, special assignments, or certain training needs.

Flexibility depends on the mission and the unit schedule. Families often plan around drill weekends, annual training, and the possibility of activation. That balance works best when everyone stays adaptable and keeps a simple plan for short-notice changes.

Post-Service Opportunities

Transition to Civilian Life

Sonar Technicians leave service with hands-on technical skills. They work with sonar systems, electronics, and acoustics. Those skills can transfer into civilian work, especially in fields that use maritime sensors and signal analysis.

Many STS Sailors work for defense contractors. Some move into commercial maritime work, ocean science support, or maritime security. A few pursue federal paths, including roles linked to ocean monitoring.

Planning still matters. The Navy offers transition help through programs like SkillBridge, along with career support for resumes, interviews, and job search steps. Education benefits may also apply. The Post-9/11 GI Bill can support degrees, certifications, and trade programs.

Most Sailors separate after completing their obligation. Early separation can require command approval and depends on Navy needs.

Civilian Career Prospects

Qualifications and Eligibility

Basic Qualifications

The Navy sets strict standards for Sonar Technicians (Submarines). You must meet each requirement.

Application Process

Step 1: Meet with a Navy Reserve recruiter. Talk through the job, the time commitment, and the requirements. The recruiter checks basic eligibility and explains Reserve obligations.

Step 2: Take the ASVAB. Complete the Armed Services Vocational Aptitude Battery and meet the required composite score.

Step 3: Complete the physical and medical screening. Pass the Navy’s medical evaluation, including vision, hearing, and general health checks.

Step 4: Undergo a background investigation. This job requires eligibility for a Secret security clearance. The review covers criminal history, finances, and conduct.

Step 5: Enlist and sign your contract. Select the Sonar Technician (Submarines) rating and accept the service obligation.

Step 6: Attend Navy Recruit Training. Complete boot camp and learn the basics of Navy service.

Step 7: Begin specialized sonar training. Attend technical schools focused on sonar systems, undersea warfare, and submarine operations.

Selection Criteria and Competitiveness

This role can be competitive. Strong ASVAB scores help. Electronics or mechanical experience can also support your application. A clean background matters because of clearance requirements.

Strong candidates stay calm under pressure. They follow procedures and solve problems without cutting corners. Consistency and reliability count.

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

Ideal Candidate Profile

This role tends to fit people who are disciplined and detail-focused. Strong Sonar Technicians often:

• Stay calm in high-pressure situations.
• Show solid technical or mechanical ability.
• Notice small details and catch errors early.
• Work well with a team and still handle solo tasks.
• Adjust quickly when conditions change at sea.
• Take interest in electronics, acoustics, or navigation.

Potential Challenges

This job can be stressful. Common challenges include:

• Time away from home.
• Close quarters with limited privacy.
• Technical work under time pressure.
• Occasional short-notice mobilizations.

People who need comfort, low risk, or a steady routine may struggle. Submarine duty can test patience and endurance.

Career and Lifestyle Alignment

This role can match people who:

• Want part-time service that supports real operations.
• Prefer technical work that demands focus and accuracy.
• Want leadership and advancement in the Navy Reserve.

It may not match people who:

• Need full control of a civilian schedule year-round.
• Avoid discomfort or higher-risk environments.
• Dislike close teamwork in tight spaces.

This job rewards patience, precision, and resilience.

More Information

If you wish to learn more about becoming an Sonar Technician – Submarine (STS) in the Navy Reserve, contact your local Navy Enlisted Recruiter. They will provide you with more detailed information you’re unlikely to find online.

You may also be interested in the following related Navy Reserve Enlisted submarine jobs:

• Fire Control Technician (FT)

• Electronics Technician – Submarine, Navigation (ETV)