7316 vs MM
Small Unmanned Aircraft System (SUAS) Operator (USMC) vs Machinist's Mate (USN)
Two branches that share a birthday month, a secretary, a budget line — and absolutely nothing else culturally.
Two veterans at a bar. The 7316 says: "You'll spend more time on pre-flight checklists and sensor calibration than actual stick time." The MM responds: "Maritime civilian employment — merchant marine engineering, shipyard work, power plant operations — is the most direct pipeline." They clink glasses. Neither fully understands what the other one just said. Both nod like they do. One of these builds character. The other one builds whatever's left after character has been fully depleted.
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 be flying drones for the Marine Corps — the future of warfare. Every infantry battalion needs SUAS operators, and you'll be the most in-demand MOS in the MAGTF. The skills transfer directly to the booming commercial drone industry, and you'll have a Secret clearance on top of it. This is the cutting-edge job every Marine wishes they had.”
You will fly small drones — RQ-20 Pumas, Skydio X2s, and whatever the next platform is. The tech is genuinely cool and the mission is real. But "operator" means you are also the maintainer, the mission planner, the battery manager, and the person explaining to the company commander why the drone can't fly in 30-knot winds for the fifth time this week. You'll spend more time on pre-flight checklists and sensor calibration than actual stick time. The civilian drone market is real but oversaturated — defense contractor SUAS jobs pay well though. Also: you are a lateral move MOS, which means you already did something else first, and your old unit will never forgive you for leaving.
“You'll run the engine room of a United States Navy warship — the propulsion plant that keeps everything moving. Steam turbines, gas turbines, reduction gears, and auxiliary systems that take years to master. MM is one of the most technically demanding ratings in the Navy, and when you get out, the commercial shipping industry and the USCG Marine Engineer license pathway are waiting. A licensed marine engineer on a deep draft vessel earns more than most college graduates ever will. This is a trade the Navy will actually teach you.”
On a nuclear carrier or submarine, you may go nuclear-qualified and operate a reactor plant, which is an entirely different career track with its own pipeline, screening, and lifestyle implications. On a conventional surface ship — a DDG, CG, or LPD — you are the engineer who keeps the LM2500 gas turbine engines running, which means you live in the engineering spaces that are loud, hot, and smell like a specific combination of JP-5, hydraulic fluid, and institutional suffering. Main reduction gears, lube oil systems, seawater cooling, auxiliary machinery: the engineering plant of a naval vessel is a system of systems and you need to understand all of them because they interact in ways that become apparent only when something fails. The engineering logs you maintain are legal documents. The watchstanding qualification process is demanding in a way that produces genuine competence. Steam plant experience on carriers and amphibious ships is rarer than it used to be but still exists. Maritime civilian employment — merchant marine engineering, shipyard work, power plant operations — is the most direct pipeline. The USCG licensing pathway for marine engineer is designed to accommodate exactly your background. What you know about high-pressure steam systems is worth something the civilian world cannot easily replicate.
The Real Life
Same dimensions, side by side. 7316 on the left, MM on the right.
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Operating and maintaining the ship's propulsion plant, auxiliary systems, and mechanical equipment. MMs run the engine room — steam turbines, gas turbines, pumps, valves, air conditioning, and hydraulic systems. On a ship: standing engineering watches, responding to engineering casualties, and performing continuous maintenance. The engine room is hot, loud, and the watch schedule is relentless.
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A School at Great Lakes (IL) is about 12 weeks. Covers mechanical fundamentals, fluid dynamics, thermodynamics, propulsion systems, and auxiliary machinery. Nuclear-designated MMs attend the nuclear power training pipeline (additional 18+ months at Charleston, SC and prototype in NY or SC).
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High. Engine room work involves heat, noise, confined spaces, and heavy lifting. Operating and maintaining propulsion machinery, pumps, valves, and auxiliary systems is physically demanding.
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Machinist's Mate is the workhorse of the engineering department, and the job is exactly as demanding as it sounds. The recruiter will tell you about engineering and propulsion — and you will learn those things. What they won't tell you: the engine room is a miserable work environment. It's 100-120 degrees, deafeningly loud, and you stand watches around the clock. The equipment is often decades old and the maintenance is endless. But there's genuine pride in keeping the plant running, and the mechanical skills are real. Nuclear MMs (MMN) have one of the best post-military career paths in the entire military — nuclear power plants and utilities pay $80K+ starting. Conventional MMs have a solid but narrower path into industrial maintenance, HVAC, and maritime engineering. The rate will break your body down if you're not careful, but you'll leave knowing how machines actually work.
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