CRYPTOLOGIC TECHNICIAN (MAINTENANCE) (CTM)

OVERVIEW

Cryptologic Technician (Maintenance) — CTM — installs and maintains the Navy's signals-intelligence collection, processing, and reporting equipment ashore and afloat. CTMs are the cryptologic community's electronics maintainers and keep the SIGINT and information-operations sensors mission-capable.

The cryptologic / information warfare community conducts signals intelligence, cyberspace operations, and electronic warfare for U.S. Cyber Command, the National Security Agency, and Fleet Cyber Command / Tenth Fleet. All cryptologic ratings require a TS/SCI clearance, polygraph eligibility, and intensive language, technical, or analytic training at the Center for Information Warfare Training (CIWT).

A-school for the rating runs ~28 weeks at Center for Information Warfare Training, Corry Station, Pensacola FL, where Sailors complete the technical foundation needed to report to their first fleet command. Entry requires the ASVAB line score AR+MK+EI+GS=222 (TS/SCI required) and an enlistment obligation of 6–6 years. CTMs advance through the standard enlisted paygrade structure (E-1 through E-9), competing in the Navy-Wide Advancement Examination (NWAE) at E-4 through E-6 and via the Selection Board at E-7 through E-9. Senior CTMs typically serve as Leading Petty Officer (LPO), Work Center Supervisor, Leading Chief Petty Officer (LCPO), or Command Master Chief (CMC), and may pursue Limited Duty Officer (LDO), Chief Warrant Officer (CWO), or commissioning programs such as STA-21, MECP, or OCS.

Across the active force, CTM Sailors are essential to the Navy's mission readiness, and the rating remains an in-demand career field with strong reenlistment bonuses (SRB), advancement opportunities, and pathways into Navy Reserve, civilian DoD, and industry careers after service.

WHAT CTMs DO

CTMs install, maintain, and repair cryptologic computer systems, signal-collection equipment, antenna systems, and the special-purpose communications and processing systems used in SIGINT and Information Operations. CTMs deploy with collection sites, ships, and special mission aircraft.

RESPONSIBILITIES

• CTMs install, maintain, and repair cryptologic computer systems, signal-collection equipment, antenna systems, and the special-purpose communications and processing systems used in SIGINT and Information Operations. CTMs deploy with collection sites, ships, and special mission aircraft.
• Stand watches and qualify on the rating's Personnel Qualification Standards (PQS), maintain training jackets, and mentor junior CTMs as required by the chain of command.
• Lead the CTM work center as Leading Petty Officer or Work Center Supervisor — managing maintenance documentation in 3M/MFOM, parts ordering, and personnel qualifications.
• Support general military training (GMT), damage control, force protection, and watch-bill assignments common to every Sailor regardless of rating.

HISTORY

CTM was established in 1976 as part of the cryptologic-community sub-rating split to provide a dedicated electronics-maintenance specialty for the rapidly growing inventory of cryptologic collection and processing systems.

The cryptologic community traces to OP-20-G — the Navy's World War II signals-intelligence organization that broke the Japanese JN-25 code and contributed to the victory at Midway. Post-war the community evolved through the Communications Technician (CT) ratings, was reorganized in 1976, and again restructured in 2008 into the modern CTI/CTM/CTN/CTR/CTT specialties under the Information Warfare community.

Today the Cryptologic Technician (Maintenance) (CTM) rating is overseen by the Enlisted Community Management (ECM) office at My Navy HR and the Center for Personal and Professional Development. Modern CTMs benefit from the Sailor 2025 personnel-system reforms, the Ready Relevant Learning (RRL) training continuum, and credentialing through the Navy COOL program — turning rating qualifications into industry-recognized certifications and licenses.

The rating's structure, training pipeline, and operational employment continue to evolve alongside the Navy's transition to Distributed Maritime Operations (DMO), Project Overmatch, and the Force Design 2045 fleet architecture, ensuring CTMs remain central to the warfighting mission.

TRAINING PIPELINE

1. 1. Recruit Training (Boot Camp)~10 weeks
   Naval Station Great Lakes, IL
   Initial entry training for all U.S. Navy enlisted Sailors at the Navy's only boot camp.
2. 2. Cryptologic Technician (Maintenance) A-School~28 weeks
   Center for Information Warfare Training, Corry Station, Pensacola FL
   Initial cryptologic rating training for accessions (TS/SCI required)
3. 3. Fleet / Operational TourFirst sea or operational tour
   Surface combatants and big-deck amphibs (SSES spaces)
   On-the-job training and qualifications in the CTM rating with a fleet unit.

TYPICAL CAREER PATH

1. E-1/E-3
   Apprentice CTM
   A-school in the cryptologic pipeline; first tour with a fleet unit.
2. E-4/E-6
   Petty Officer CTM
   Lead a Cryptologic Technician (Maintenance) work-center, qualify in core watchstations and platform-specific tasks.
3. E-7+
   Chief Cryptologic Technician (Maintenance)
   Senior enlisted leader of the rating in the command; instructor, detailer, or department leading chief assignments.

TYPICAL PLATFORMS & UNITS

• Surface combatants and big-deck amphibs (SSES spaces)
• Submarines
• P-8A Poseidon and special mission aircraft
• NSA Cryptologic Centers worldwide

EXAMPLE NECs

• CTM-9192 Cryptologic Maintenance Technician

RELATED RATINGS

• CTN · Cryptologic & IW
  Cryptologic Technician (Networks)
• ET · General Surface & Combat
  Electronics Technician
• IT · Cryptologic & IW
  Information Systems Technician

RELATED BASES

• Navy Base · MD
  Fort George G. Meade
• Navy Base · WA
  Naval Air Station Whidbey Island

FREQUENTLY ASKED QUESTIONS

SOURCES

• Navy Cryptologic Technician (Maintenance) (navy.com)
• My Navy HR — Enlisted Community Management
• Navy COOL — Rating Detail