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Navy NEC · Engineering

B10U Master Utilitiesman

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. Part of the Utilitiesman rating

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Overview

A Master Utilitiesman works in construction management with a focus on mechanical and electrical construction operations. The specialty also covers public works utilities and camp maintenance functions.

Core Skills

  • Mechanical and electrical construction operations
  • Public works utilities and camp 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.

Heating, Air Conditioning, and Refrigeration Mechanics and Installers

Experience in mechanical and electrical construction operations and camp maintenance provides a related foundation for HVAC installation and maintenance work.

How to prepare: Ask an HVAC technical program or apprenticeship provider to assess your documented experience and identify needed hands-on training. Covered refrigerant work requires passing the applicable EPA-approved certification test unless working as an apprentice under close and continual certified-technician supervision; some states and localities also require separate trade licensing.

What the civilian work involves
  • Test electrical circuits or components for continuity, using electrical test equipment.
  • Study blueprints, design specifications, or manufacturers' recommendations to ascertain the configuration of heating or cooling equipment components and to ensure the proper installation of components.
  • Connect heating or air conditioning equipment to fuel, water, or refrigerant source to form complete circuit.

Notes & Sources

  • The verified B10U description establishes broad construction and utilities experience but does not document specific HVAC installation, diagnostics, or refrigerant-handling duties.
Evidence for this guidance (4 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC B10U

    [1] NEC entry "B10U - Master Utilitiesman"; cached text line 2155; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Mechanical and electrical construction operations, Public works utilities and camp maintenance, Heating, Air Conditioning, and Refrigeration Mechanics and Installers (O*NET 49-9021.00)

  2. O*NET: Heating, Air Conditioning, and Refrigeration Mechanics and Installers

    [2] O*NET 30.3 occupational data

    Supports: Heating, Air Conditioning, and Refrigeration Mechanics and Installers (O*NET 49-9021.00)

  3. Bureau of Labor Statistics: Heating, Air Conditioning, and Refrigeration Mechanics and Installers

    [3] How to Become; Education and Training; Licenses, Certifications, and Registrations; updated August 27, 2026

    Supports: Heating, Air Conditioning, and Refrigeration Mechanics and Installers (O*NET 49-9021.00)

  4. US EPA: Section 608 Technician Certification Requirements

    [4] Requirements and Types of Certifications; updated July 15, 2026

    Supports: Heating, Air Conditioning, and Refrigeration Mechanics and Installers (O*NET 49-9021.00)

Defense contractor jobs for B10U

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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