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Navy NEC · IT & Cyber

C37C Cryptologic Infrastructure Maintenance Director

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 Cryptologic Infrastructure Maintenance Director oversees installation, organizational maintenance, and troubleshooting for cryptographic and cryptologic networked systems. The director manages information systems, enforces security requirements, and coordinates user clearances and access authorization with the Command Security Manager.

Minimum clearance: TS/SCI

Core Skills

  • Security clearance and system access coordination
  • Network risk monitoring and security policy enforcement
  • Information System Security Officer functions
  • Cryptographic and networked system troubleshooting

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

ISSO duties, network risk monitoring, security policy enforcement, and access authorization coordination transfer directly to information security analysis.

How to prepare: Build a sample risk assessment for a test network that documents security weaknesses, proposed controls, and user access changes.

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

Computer Network Support Specialists

Installation oversight, scheduled and ad hoc maintenance, and troubleshooting of cryptologic-networked systems support civilian network diagnosis and support work.

How to prepare: Use a Windows Server test network to practice group access permissions and fault diagnosis, then document the troubleshooting steps and results.

What the civilian work involves
  • Configure security settings or access permissions for groups or individuals.
  • Identify the causes of networking problems, using diagnostic testing software and equipment.
  • Document network support activities.
Civilian tools and software (examples)
  • Microsoft Active Directory
  • Microsoft Windows Server

Notes & Sources

Evidence for this guidance (3 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC C37C

    [1] NEC entry "C37C - Cryptologic Infrastructure Maintenance Director"; cached text line 3512; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Security clearance and system access coordination, Network risk monitoring and security policy enforcement, Information System Security Officer functions, Cryptographic and networked system troubleshooting, Information Security Analysts (O*NET 15-1212.00), Computer Network Support Specialists (O*NET 15-1231.00)

  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: Computer Network Support Specialists

    [3] O*NET 30.3 occupational data

    Supports: Computer Network Support Specialists (O*NET 15-1231.00)

Defense contractor jobs for C37C

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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