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Navy NEC · IT & Cyber

C27C Submarine Carry-On Equipment (COE) Supervisor

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 Submarine Carry On Equipment Supervisor manages secure network operating systems and coordinates organizational level maintenance for submarine cryptologic equipment. The supervisor manages Tier 2 software and hardware corrective actions, identifies risks, monitors activity, enforces security policies, and performs Information System Security Officer functions.

Minimum clearance: TS/SCI

Core Skills

  • Tier 2 network corrective-action coordination
  • Cryptologic equipment maintenance coordination
  • Network risk monitoring and policy enforcement
  • Information system security officer functions

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.

Information Security Analysts

Identifying network risks, monitoring activity, enforcing security policies, and performing ISSO functions directly overlap with information security analysis.

How to prepare: Build a sample risk assessment for a Linux lab system, documenting identified risks, selected safeguards, and tests of those safeguards.

What the civilian work involves
  • Develop plans to safeguard computer files against accidental or unauthorized modification, destruction, or disclosure and to meet emergency data processing needs.
  • Perform risk assessments and execute tests of data processing system to ensure functioning of data processing activities and security measures.
  • Modify computer security files to incorporate new software, correct errors, or change individual access status.
Civilian tools and software (examples)
  • Linux
  • Microsoft PowerShell

Network and Computer Systems Administrators

Managing and securing network operating systems and coordinating Tier 2 hardware and software corrective actions transfer directly to systems administration.

How to prepare: Set up a Linux network lab and document diagnosis and resolution of a system or network fault, including checks that service has been restored.

What the civilian work involves
  • Maintain and administer computer networks and related computing environments, including computer hardware, systems software, applications software, and all configurations.
  • Diagnose, troubleshoot, and resolve hardware, software, or other network and system problems, and replace defective components when necessary.
  • Operate master consoles to monitor the performance of computer systems and networks and to coordinate computer network access and use.
Civilian tools and software (examples)
  • Linux
  • Bash
  • Microsoft Active Directory

Notes & Sources

Evidence for this guidance (3 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC C27C

    [1] NEC entry "C27C - Submarine Carry-On Equipment (COE) Supervisor"; cached text line 3252; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Tier 2 network corrective-action coordination, Cryptologic equipment maintenance coordination, Network risk monitoring and policy enforcement, Information system security officer functions, Information Security Analysts (O*NET 15-1212.00), Network and Computer Systems Administrators (O*NET 15-1244.00)

  2. O*NET: Information Security Analysts

    [2] O*NET 30.3 occupational data

    Supports: Information Security Analysts (O*NET 15-1212.00)

  3. O*NET: Network and Computer Systems Administrators

    [3] O*NET 30.3 occupational data

    Supports: Network and Computer Systems Administrators (O*NET 15-1244.00)

Defense contractor jobs for C27C

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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