Information Systems Technician – Submarines

Navy Information Systems Technician – Submarines (ITS):
Definitive Guide

A submarine depends on more than steel or power. It depends on information. At any moment, hundreds of connected computer systems process satellite data, mission intelligence, plus encrypted communications.

When a network fails, the mission can be ormation Systems Technicians (Submarines) prevent that. They design, maintain, and repair key IT systems so information keeps moving when it matters most. On a submarine, delays can cost time you do not have.

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The Information System Technician – Submarines (ITS) are Navy enlisted Sailors who perform various functions related to communications operations, message processing, network administration, and cybersecurity aboard U.S. Navy submarine vessels.

A submarine is only as strong as its data. Every mission depends on secure networks, encrypted comms, and real-time intelligence. Information Systems Technicians—Submarines (ITS) make sure that nothing fails, nothing leaks, and nothing is lost.

ITSs secure, defend, and maintain the Navy’s most critical digital systems. From global satellite communications to classified intelligence networks, they ensure information flows without interruption.

• Radio Frequency (RF) Communications & Spectrum Management – Control all incoming and outgoing messages.
• Satellite Telecommunications – Manage secure, worldwide comms for mission success.
• Network Administration & Security – Build, operate, and defend IT systems on submarines.
• Electronic Warfare Systems – Maintain and safeguard cryptographic and communication security equipment.
• Data Recovery & Diagnostics – Troubleshoot issues before they become mission failures.
• Software & Hardware Support – Train crew members, deploy new applications, and solve IT problems on the fly.

• Aboard submarines – Climate-controlled, high-security electronic spaces.
• Occasional shore assignments – Supporting IT operations at Navy facilities worldwide.

• About 600 ITSs in the Navy.
• Work in teams, but often take on solo projects.

On a sub, there’s no IT help desk—just you. If the network goes down, you fix it. If data is compromised, you secure it. Failure is not an option.

The ITS rating is split into two specialized fields, each focused on keeping submarine networks and electronic systems operational.

The link between the sub and the world.

• Operate & Maintain Submarine Communication Systems – Keep secure comms running 24/7.
• Manage Databases & LANs – Oversee networks critical to mission success.
• Handle Cryptographic Material – Secure and protect classified data at sea.
• Test & Repair Communication Equipment – Fix problems before they impact operations.
• Support the Communications Officer – Assist in mission-critical communications.
• Serve as Instructors & Support Staff – Train the next generation of ITS-COMMS personnel.

Defend, disrupt, and dominate the electronic battlespace.

• Operate & Maintain Advanced Electronic Systems – Work with cutting-edge submarine technology.
• Manage Databases, LANs & Electronic Warfare Equipment – Keep classified networks secure.
• Monitor & Repair Command, Control, Computer & Intelligence (C4I) Systems – Ensure mission-critical hardware and software function flawlessly.
• Utilize Fiber Optics, Digital, Microwave & Satellite Tech – Support secure information transfer.
• Diagnose & Restore Automated Information Systems – Apply high-level troubleshooting skills.
• Monitor Security Protocols & System Capabilities – Advise on vulnerabilities and implement protection measures.
• Assist in Submarine Surface & Periscope Operations – Provide technical support for safe navigation.

Both ITS specialties are highly technical, highly classified, and absolutely essential. Whether handling secure comms or electronic warfare, ITSs make sure the sub stays connected, protected, and mission-ready.

The ITS rating splits into specialized roles, each focused on maintaining secure networks, classified communications, and electronic warfare systems aboard submarines.