STG vs AD
Sonar Technician (Surface) (USN) vs Aviation Machinist's Mate (USN)
Same ocean, same Navy chow, same creative interpretation of "sleep schedule" — wildly different definitions of a bad day.
If a STG could go back to MEPS, they'd want to know: the SQQ-89 combat system integrates your sonar data with the ship's tactical picture — you are an essential piece of the ASW (anti-submarine warfare) team. If a AD had the same time machine: your workspace is either a flight deck on a CVN in 40-knot winds or a hangar bay where the temperature is 20 degrees hotter than outside due to reasons nobody can explain. Neither was briefed on any of this. Both would've appreciated the heads-up. Somewhere in the Pentagon, someone considers both of these "manpower." Manpower has thoughts about that.
After the Uniform
The part the recruiter skips: what each job actually translates to once you're a civilian — and what it pays.
Salary data from the U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics program. A guide, not a guarantee.
Recruiter vs. Reality
The pitch versus what people who actually did the job report back.
“You'll hunt submarines from the Combat Information Center of a Navy surface ship. The sonar tradecraft takes years to develop and the acoustic analysis skill is genuinely rare — contact classification from a passive signature is something you can't learn in a classroom and can't un-learn after you've done it. Raytheon, L3Harris, and the major sonar contractors know what STG experience means and will pay for it. It's one of the most niche and specifically valued specialties in the surface Navy, and the defense contractor demand for experienced STGs is consistent.”
You sit in a space called the sonar shack, wear headphones connected to an AN/SQS-53 hull-mounted sonar or the AN/SQR-19 towed array, and listen to the ocean. The acoustic environment of the deep ocean is not silent — it is full of biologics (whales, shrimp, fish), merchant shipping noise, environmental clutter, and the occasional thing that doesn't quite belong that you have to classify, track, and report. The discrimination between a real contact and a false alarm is a trained skill that takes years to develop and a specific kind of patience that not everyone has. The SQQ-89 combat system integrates your sonar data with the ship's tactical picture — you are an essential piece of the ASW (anti-submarine warfare) team. STG billet ships are primarily destroyers and frigates; ASW is a surface warfare core competency, not an add-on. The ocean acoustics knowledge, signal processing background, and technical depth of the training translate to civilian acoustics roles in marine research, underwater survey operations, and defense contracting. NAVSEA contractors working on sonar systems specifically recruit experienced STGs. The environmental acoustics research community (NOAA, WHOI, Scripps) values the operational background in a way that formal academic programs do not produce. You know what the ocean sounds like when something is wrong. That is not a trivial thing to know.
“You'll maintain jet engines on Navy and Marine Corps aircraft — F404s in the F/A-18, F135s in the F-35, T56 turboprops in the E-2C. The technical depth of naval aviation powerplant maintenance is significant, and the FAA Powerplant certificate is directly achievable through military engine experience. Major airlines and MRO facilities are in a persistent competition for A&P-certified technicians with military jet engine experience, and they recruit at Navy transition events specifically for this reason. The pay for an A&P powerplant specialist at a major airline MRO is real money. The Navy is paying for the training.”
You will become intimately familiar with the GE F414 and the Pratt & Whitney F100 in ways the engineers who designed them never intended, primarily because you are maintaining them with fewer people and less sleep. Your workspace is either a flight deck on a CVN in 40-knot winds or a hangar bay where the temperature is 20 degrees hotter than outside due to reasons nobody can explain. A jet engine inspection that the manual says takes four hours will take twelve because three of the required tools are on another aircraft, one is missing entirely, and the work order has a typo. You will develop a second sense for the difference between a normal engine noise and an 'oh no' engine noise. Civilian aviation maintenance is absolutely within reach — A&P certification pathway is legitimate — but the Navy will wring every possible flight hour out of you first. The moment you marshal a jet that you fixed and watch it come off the waist cat is the closest thing to pride the aviation world offers.
The Real Life
Same dimensions, side by side. STG on the left, AD on the right.
Operating and maintaining surface ship sonar systems — AN/SQS-53C hull-mounted sonar, AN/SQR-19 towed array, and torpedo systems. STGs hunt submarines. On a ship: standing sonar watches, tracking subsurface contacts, operating torpedo tubes, and participating in anti-submarine warfare exercises. The work requires patience, good ears, and the ability to interpret acoustic data.
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A School at Great Lakes (IL) is about 23 weeks. Covers acoustic theory, sonar equipment operation, submarine classification, torpedo systems, and anti-submarine warfare tactics. The training is technical and requires a good ear for sound differentiation.
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Low. Sonar operations are console-based in CIC and sonar control. Standard Navy PT requirements.
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Sonar Technician (Surface) is the submarine hunter of the surface fleet. The recruiter will talk about anti-submarine warfare and sonar operations — and the work is genuinely fascinating when you're tracking a real submarine. The Tom Clancy stuff is based on reality. What they won't tell you: most of your time is spent in training exercises and routine watches where the ocean is empty. The thrill-to-boredom ratio is heavily weighted toward boredom. Sea duty is standard surface Navy — long deployments on destroyers and frigates. The rate is small, which can make promotion unpredictable. Civilian career translation is specialized: underwater acoustics, defense contracting (sonar systems), and oceanography are the primary paths. STGs who develop deep acoustic knowledge and get into the defense contracting world can earn well, but it's a niche market. A unique rate for someone who loves the science of sound and the hunt for submarines.
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