Marine Machinery Mechanic
Everything OPM FedScope (June 2026) reports about the Marine Machinery Mechanic occupation series (code 5334): headcount, average salary, length of service, and pay comparison.
The verdict
With 2,930 employees (0.2% of the federal civilian workforce), Marine Machinery Mechanic ranks as a smaller, specialized federal occupation within the Industrial Equipment Maintenance Family family, and headcount grew 0.5% from the prior period. Its average salary of $82,216 pays below the $117,339 federal average.
- Employees
- 2,930
- Share of workforce
- 0.2%
- Avg salary
- $82,216
- Avg tenure
- 9.9 yrs
FedScope read on Marine Machinery Mechanic (dense series)
Federal agencies employ 2,930 people in the Marine Machinery Mechanic occupation (OPM code 5334), accounting for 0.2% of the total federal civilian workforce of 1,953,300 for the June 2026 reporting window. Headcount in this occupation moved up by 0.5% versus the prior period, a modest but trackable signal for anyone considering this specialized federal career path.
The average salary for Marine Machinery Mechanic is $82,216 per year. Salaries moved up by 0.6% from the prior period, a modest shift, consistent with routine locality pay and grade-level movement. Average length of service in this role is 9.9 years, a mid-length average tenure, reflecting a mix of career employees and those who transfer or exit mid-career.
The Industrial Equipment Maintenance Family family (code 53) groups Marine Machinery Mechanic together with 11 other related occupations across the federal government. Candidates browsing USAJOBS for Marine Machinery Mechanic postings should also review these sibling occupations in the Industrial Equipment Maintenance Family family.
Within the Industrial Equipment Maintenance Family family, Marine Machinery Mechanic is the single largest occupation by headcount, accounting for 29.7% of the family's combined 9,873 employees. Its average salary ranks in the top half (64th percentile) of pay among Industrial Equipment Maintenance Family occupations.
Salary Context
How Marine Machinery Mechanic pay compares to the federal average of $117,339
Occupation Average
$82,216
Federal Average
$117,339
vs. Federal Avg
-29.9%
Where Marine Machinery Mechanic ranks on federal pay
Its average salary of $82,216 is higher than 39% of federal occupation series (210 of 541). The highlighted bar marks where Marine Machinery Mechanic sits in the federal pay distribution.
Average-salary distribution across all 541 federal occupation series; Marine Machinery Mechanic ranks higher than 39%.
Related Occupations in Industrial Equipment Maintenance Family
10 other occupations in the same family
| Occupation | Employees | Avg Salary | Avg LOS |
|---|---|---|---|
| Air Conditioning Equipment Mechanic | 2,341 | $81,732 | 10.7 yrs |
| Powered Support Systems Mechanic | 1,423 | $79,568 | 12.1 yrs |
| Industrial Equipment Mechanic | 1,058 | $110,522 | 14.6 yrs |
| Misc Industrial Equipment Maintenance | 846 | $96,979 | 14.3 yrs |
| Production Machinery Mechanic | 562 | $80,047 | 12.8 yrs |
| Lock and Dam Repairing | 430 | $121,526 | 16.1 yrs |
| Heating & Boiler Plant Equipmt Mechanic | 232 | $79,114 | 12.5 yrs |
| Laundry & Dry Cleaning Equipmt Repairing | 22 | $79,576 | 17.9 yrs |
| Oiling and Greasing | 19 | $69,636 | 14.7 yrs |
| Elevator Mechanic | 7 | $81,184 | 20.2 yrs |
Nationwide peers near this dense headcount
Two peer sets for Marine Machinery Mechanic outside the Industrial Equipment Maintenance Family family, on headcount and average salary axes that vary across all OPM occupation series.
Similar dense headcount
Nearest employee counts in other occupation families (2,930 here).
Similar average salary
Nearest average salaries in other occupation families ($82,216 here).
Key takeaways
- Marine Machinery Mechanic pays below the federal average by 29.9% ($82,216 vs $117,339 federal-wide), at the 39th percentile for pay among 541 tracked occupation series.
- A smaller, specialized federal occupation by headcount: 2,930 employees, 0.2% of the federal civilian workforce, and headcount grew 0.5% from the prior period.
- According to OPM FedScope June 2026, Marine Machinery Mechanic ranks #127 of 663 federal occupation series by headcount (the same employee_count ordering as our occupations directory).
- Within the Industrial Equipment Maintenance Family family, Marine Machinery Mechanic is the single largest occupation by headcount, accounting for 29.7% of the family's combined 9,873 employees.
OPM FedScope and Federal Workforce Data figures are federal civilian headcounts, average salaries, and length-of-service statistics - not job-quality scores, hiring advice, or a live vacancy listing. A larger or higher-paid agency is not a better employer.