Navy NEC · Engineering

U30A Auxiliary Systems 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.

Overview

An Auxiliary Systems Technician operates auxiliary systems and performs organizational-level preventive and corrective maintenance. The technician works on auxiliary systems aboard CG-47, DDG-51, and DDG-1000 ships.

Core Skills

  • Cruiser and destroyer auxiliary-system operation
  • Organizational-level preventive and corrective 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.

Stationary Engineers and Boiler Operators

Operating and maintaining shipboard auxiliary systems provides transferable experience for operating stationary auxiliary equipment and addressing equipment problems.

How to prepare: Take a stationary-engineer course covering boiler operation and building controls to address equipment-specific gaps. Some state and local jurisdictions require licenses with experience requirements and a written exam; license classes restrict the type and size of equipment operated without supervision.

What the civilian work involves
  • Operate or tend stationary engines, boilers, and auxiliary equipment, such as pumps, compressors, or air-conditioning equipment, to supply and maintain steam or heat for buildings, marine vessels, or pneumatic tools.
  • Analyze problems and take appropriate action to ensure continuous and reliable operation of equipment and systems.
Civilian tools and software (examples)
  • Building management system software

Notes & Sources

  • Verified military duties do not identify specific auxiliary equipment or establish boiler-operation experience.
Evidence for this guidance (3 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC U30A

    [1] NEC entry "U30A - Auxiliary Systems Technician"; cached text line 11771; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Cruiser and destroyer auxiliary-system operation, Organizational-level preventive and corrective maintenance, Stationary Engineers and Boiler Operators (O*NET 51-8021.00)

  2. O*NET: Stationary Engineers and Boiler Operators

    [2] O*NET 30.3 occupational data

    Supports: Stationary Engineers and Boiler Operators (O*NET 51-8021.00)

  3. Bureau of Labor Statistics: Stationary Engineers and Boiler Operators

    [3] How to Become a Stationary Engineer or Boiler Operator; Licenses, Certifications, and Registrations; page dated 2026-08-27, retrieved 2026-09-23

    Supports: Stationary Engineers and Boiler Operators (O*NET 51-8021.00)

Defense contractor jobs for U30A

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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