Career comparison
Diesel Mechanic vs. Ship Engineer
Side-by-side pay, training, growth and day-to-day duties to help you choose between two related careers.
Ship engineers earn more at the median ($109,530 vs. $61,770), while diesel mechanics usually get to work faster (6–24 months of training). Diesel mechanics diagnose and repair trucks, buses and diesel-powered equipment. Ship engineers run and repair the engines and systems that power ships.
Pay data: BLS OEWS, May 2025 · Outlook: BLS 2025–35 · Checked October 15, 2026
| Diesel Mechanic | Ship Engineer | |
|---|---|---|
| Median pay | $61,770 ($29.70/hr) | $109,530 ($52.66/hr) |
| Pay range (10th–90th) | $44,530 – $88,740 | $57,870 – $165,490 |
| Job growth, 2025–35 | +3.6% (about as fast as average) | +2.7% (about as fast as average) |
| Openings per year | 24,400 | 900 |
| Typical entry education | High school diploma or equivalent | Postsecondary nondegree award |
| Training time | 6–24 months | Years of sea time and credentials |
| Key credential | ASE Medium-Heavy Truck (T-series) | USCG engineer license |
| Work setting | Diesel mechanics work in fleet shops, dealerships, independent repair shops and on the road as field service techs. | Engineers work in hot, loud engine rooms aboard vessels.. |
What each job does
Diesel Mechanic
- Perform preventive maintenance inspections and services
- Diagnose problems using diagnostic software and test equipment
- Repair or rebuild engines, transmissions and drivetrains
- Inspect and repair air brakes, steering and suspension
- Service aftertreatment systems such as DPF, DEF and SCR
Ship Engineer
- Operate main engines
- Maintain generators
- Repair pumps and boilers
- Stand engine watches
- Troubleshoot breakdowns
How they’re similar
Both careers involve hands-on work and problem-solving. They sit in different fields, mechanics, maintenance & manufacturing and transportation & logistics, but share transferable skills such as problem-solving and problem-solving.
Which should you choose?
Choose diesel mechanic if…
- I love figuring out why engines and machines fail
- I don’t mind grease and heavy parts
- I’m comfortable using computers for diagnostics
Choose ship engineer if…
- I love engines
- I solve problems
- I can be away for weeks
Still torn? Take the Diesel Mechanic fit quiz and the Ship Engineer fit quiz, or the full Career Match Quiz.
Quick comparisons
Which pays more, diesel mechanic or ship engineer?
Ship Engineers earn more at the median: $109,530 versus $61,770 for diesel mechanics, based on BLS May 2025 data.
Which takes less time to train for?
Diesel Mechanics typically train faster (6–24 months) than ship engineers (Years of sea time and credentials).
Which career has better job growth?
BLS projects diesel mechanics to grow +3.6% from 2025–35, compared with +2.7% for ship engineers.