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Navy NEC · Engineering

U12A DDG-M Gas Turbine Mechanical Maintenance Technician

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

A Navy Enlisted Classification: a skill designation sailors hold in addition to their rating.

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Overview

A DDG M gas turbine mechanical maintenance technician operates and performs advanced organizational or intermediate mechanical maintenance on gas turbine main propulsion and electric generating plants. The technician maintains mechanical systems and auxiliary support systems to the component level.

Core Skills

  • Component-level propulsion and generator mechanical maintenance
  • Gas turbine electric generating plant operation
  • Propulsion and generating plant auxiliary maintenance

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Power Plant Operators

Operating and mechanically maintaining gas turbine electric generating plants and their auxiliary systems transfers directly to turbine-based power plant operations.

How to prepare: Seek supervised operator training at a turbine-based generating plant, focusing on control-board operation and generator output control.

What the civilian work involves
  • Control power generating equipment, including boilers, turbines, generators, or reactors, using control boards or semi-automatic equipment.
  • Monitor power plant equipment and indicators to detect evidence of operating problems.
  • Start or stop generators, auxiliary pumping equipment, turbines, or other power plant equipment as necessary.
Civilian tools and software (examples)
  • Computerized maintenance management system CMMS

Wind Turbine Service Technicians

Component-level mechanical maintenance of propulsion and generating plants provides a foundation for wind turbine mechanical servicing.

How to prepare: Complete hands-on wind turbine service training covering variable-pitch mechanisms, hydraulic systems, and electrical fault diagnosis.

What the civilian work involves
  • Troubleshoot or repair mechanical, hydraulic, or electrical malfunctions related to variable pitch systems, variable speed control systems, converter systems, or related components.
  • Diagnose problems involving wind turbine generators or control systems.
  • Start or restart wind turbine generator systems to ensure proper operations.

Notes & Sources

Evidence for this guidance (3 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC U12A

    [1] NEC entry "U12A - DDG-M Gas Turbine Mechanical Maintenance Technician"; cached text line 11394; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Component-level propulsion and generator mechanical maintenance, Gas turbine electric generating plant operation, Propulsion and generating plant auxiliary maintenance, Power Plant Operators (O*NET 51-8013.00), Wind Turbine Service Technicians (O*NET 49-9081.00)

  2. O*NET: Power Plant Operators

    [2] O*NET 30.3 occupational data

    Supports: Power Plant Operators (O*NET 51-8013.00)

  3. O*NET: Wind Turbine Service Technicians

    [3] O*NET 30.3 occupational data

    Supports: Wind Turbine Service Technicians (O*NET 49-9081.00)

Defense contractor jobs for U12A

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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