AB vs GSE
Aviation Boatswain's Mate (USN) vs Gas Turbine Systems Technician (Electrical) (USN)
Two ratings on the same ship, two completely different answers to "how was deployment?" at the same homecoming.
The truth about AB and GSE isn't classified — it just wasn't being collected until now. We're building the dataset one honest review at a time. The ratings below are the declassified version of two career fields the military prefers to describe in bullet points. This page exists because no career counselor would ever lay it out this clearly.
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 work on the flight deck of an aircraft carrier — one of the most dangerous and adrenaline-fueled workplaces on earth. ABs launch and recover fighter jets, manage jet fuel operations, and direct aircraft weighing 60,000+ pounds in spaces tighter than a parking lot. It's the closest thing to a controlled disaster the Navy runs every day.”
The flight deck will try to kill you. Jet blast, spinning propellers, arresting cables under tension, and aircraft moving in every direction — all on a pitching deck in the middle of the ocean. The work is physically brutal, the hours are relentless during flight ops, and the safety stakes are absolute. One wrong step and you're a statistic. The ABs who thrive love the intensity and take genuine pride in the fact that nothing flies without them. The civilian airport and aviation fueling industry hires from this background, but nothing on the outside matches carrier flight ops.
The Real Life
Same dimensions, side by side. AB on the left, GSE on the right.
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Operating and maintaining the electrical side of the ship's gas turbine propulsion plant — the LM2500 generator sets, ship service gas turbine generators (SSGTGs), main switchboards, propulsion control systems, motor controllers, and the ship's electrical distribution network. On a DDG underway: standing engineering watches (4-on, 8-off rotation), monitoring generator output and bus loads, responding to electrical plant casualties, and executing PMS maintenance between watches. In port: preventive maintenance, tagout evolutions, and supporting availabilities in the shipyard or on the pier.
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After boot camp, GSE candidates complete Basic Engineering Common Core (BECC) then attend "A" School at Surface Warfare Engineering School (SWES) at either Norfolk (VA) or Great Lakes (IL) — approximately 6-9 months total covering electrical theory, AC/DC power generation, motor controllers, switchboard operations, and gas turbine electrical systems. Training is classroom-heavy at first, then shifts to hands-on simulator work on gas turbine plant trainers.
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High. Gas turbine engineering spaces on a DDG run at sustained high temperatures and noise levels that require hearing protection at all times. GSEs work in confined machinery spaces, handle high-voltage switchboard equipment (up to 4,160V on some systems), and routinely carry heavy components through tight passageways and steep ladders. The work environment is physically unforgiving underway.
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GSE is not a glamorous rating and the recruiter probably spent thirty seconds on it before moving on to something flashier. Here is the honest pitch: the Navy's surface combatant fleet runs on LM2500 gas turbines, and those turbines cannot move without functioning electrical generation and distribution. That is your job. You will spend a significant portion of your life in hot, loud, cramped engineering spaces maintaining switchboards, generator sets, and propulsion control systems — and you will be good at it. The watch rotation underway (4-on, 8-off, around the clock) grinds you down in a way that is hard to explain until you have lived it. The heat in the main engine room is real and sustained. What the recruiter will not tell you: the civilian career translation from GSE is one of the strongest of any enlisted rating in the surface fleet. Power generation, industrial electrical, and defense contracting are all active pipelines for GSE veterans. Utilities and LM2500 operators — GE Marine Solutions and Siemens Energy among them — specifically value this background. Do the job right for four to six years and you leave with skills that pay.
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