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Navy NEC · Engineering

N25O Surface Ship Nuclear Propulsion Plant Operator: Mechanical

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 surface ship nuclear propulsion plant mechanical operator operates mechanical systems aboard nuclear powered surface ships. This operator also performs organizational level maintenance on those mechanical systems.

Core Skills

  • Organizational-level nuclear plant mechanical 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.

Nuclear Technicians

Operating and maintaining surface-ship nuclear propulsion mechanical systems transfers to nuclear equipment performance monitoring and maintenance support.

How to prepare: Compare your documented mechanical maintenance experience with nuclear technician openings focused on plant equipment testing and performance monitoring.

What the civilian work involves
  • Monitor nuclear reactor equipment performance to identify operational inefficiencies, hazards, or needs for maintenance or repair.
  • Test plant equipment to ensure it is operating properly.

Nuclear Power Reactor Operators

Experience operating nuclear propulsion plant mechanical systems provides a foundation for civilian nuclear plant operations, but does not establish reactor-control experience.

How to prepare: Ask a commercial nuclear facility to assess your service record against its operator training entry criteria. Reactor operator licensing requires meeting the facility's education, training and experience requirements with facility certification to the NRC, and the license is valid only for that facility.

What the civilian work involves
  • Operate nuclear power reactors in accordance with policies and procedures to protect workers from radiation and to ensure environmental safety.
  • Monitor all systems for normal running conditions, performing activities such as checking gauges to assess output or the effects of generator loading on other equipment.

Notes & Sources

Evidence for this guidance (4 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC N25O

    [1] NEC entry "N25O - Surface Ship Nuclear Propulsion Plant Operator - Mechanical"; cached text line 8739; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Organizational-level nuclear plant mechanical maintenance, Nuclear Technicians (O*NET 19-4051.00), Nuclear Power Reactor Operators (O*NET 51-8011.00)

  2. O*NET: Nuclear Technicians

    [2] O*NET 30.3 occupational data

    Supports: Nuclear Technicians (O*NET 19-4051.00)

  3. O*NET: Nuclear Power Reactor Operators

    [3] O*NET 30.3 occupational data

    Supports: Nuclear Power Reactor Operators (O*NET 51-8011.00)

  4. U.S. Nuclear Regulatory Commission: Licensing Process for Operators

    [4] Process for New Operator Licenses; page last reviewed/updated September 15, 2026

    Supports: Nuclear Power Reactor Operators (O*NET 51-8011.00)

Defense contractor jobs for N25O

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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