Navy NEC · Engineering

T31A SSBN SSI4 Electronics Technician (NAVIGATION) Maintainer

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 Electronics Technician rating

Overview

An SSBN SSI4 Electronics Technician Navigation Maintainer performs organizational level maintenance, intermediate level maintenance, or both aboard SSBN 726 class submarines. The maintainer works on Trident II D-5 SSI INC 4 Strategic Weapon System navigation systems, forward electronics, and Quartermaster equipment.

Minimum clearance: Top Secret

Core Skills

  • Organizational and intermediate-level Trident navigation system maintenance
  • Forward electronics and Quartermaster equipment 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.

Electrical and Electronics Repairers, Commercial and Industrial Equipment

Organizational and intermediate-level maintenance of SSBN navigation systems, forward electronics, and Quartermaster equipment transfers to commercial and industrial electronic equipment repair.

How to prepare: Complete a hands-on industrial electronics troubleshooting course focused on diagnosing equipment faults with test instruments and documenting repairs.

What the civilian work involves
  • Test faulty equipment to diagnose malfunctions, using test equipment or software, and applying knowledge of the functional operation of electronic units and systems.
  • Maintain equipment logs that record performance problems, repairs, calibrations, or tests.
  • Install repaired equipment in various settings, such as industrial or military establishments.
Civilian tools and software (examples)
  • Circuit evaluation software
  • Computerized maintenance management system CMMS

Notes & Sources

Evidence for this guidance (2 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC T31A

    [1] NEC entry "T31A - SSBN SSI4 Electronics Technician (NAVIGATION) Maintainer"; cached text line 10803; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Organizational and intermediate-level Trident navigation system maintenance, Forward electronics and Quartermaster equipment maintenance, Electrical and Electronics Repairers, Commercial and Industrial Equipment (O*NET 49-2094.00)

  2. O*NET: Electrical and Electronics Repairers, Commercial and Industrial Equipment

    [2] O*NET 30.3 occupational data

    Supports: Electrical and Electronics Repairers, Commercial and Industrial Equipment (O*NET 49-2094.00)

Defense contractor jobs for T31A

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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