Malicious actors and negligent mariners are putting maritime infrastructure at increasing risk. ThayerMahan delivers a comprehensive, technology-driven solution to monitor, protect, and respond - ensuring the resilience of your critical undersea assets.
The Growing Threat
- 900 million miles of undersea cable span the globe
- 200 cables cut in 2024 alone
- $1–2 billion in economic loss per day from major disruptions
Your infrastructure is vulnerable to both intentional sabotage and accidental damage. The risk is real - and growing.
Your Challenges
Organizations responsible for undersea infrastructure face several critical pain points:
- Lack of visibility into underwater activity
- Delayed detection of threats or damage
- Inability to attribute incidents to specific actors
- Slow response times to emerging threats
- Limited post-incident insights for future prevention
Our Solution: End-to-End Infrastructure Protection 
ThayerMahan offers a comprehensive suite of capabilities to secure your maritime infrastructure from surface to seabed.
Vulnerability Assessments
Identify and understand the specific risks to your infrastructure - from cable-cutting anchors to underwater explosives. Our assessments inform smarter decisions and proactive mitigation.
Persistent Monitoring
Our multi-sensor systems provide continuous surveillance across all marine environments:

ThayerMahan offers a comprehensive suite of capabilities to secure your maritime infrastructure from surface to seabed.
Vulnerability Assessments
Identify and understand the specific risks to your infrastructure - from cable-cutting anchors to underwater explosives. Our assessments inform smarter decisions and proactive mitigation.
Persistent Monitoring
Our multi-sensor systems provide continuous surveillance across all marine environments:
- Comprehensive Maritime Awareness
Detect and classify undersea, surface, and aerial threats - including “dark” vessels and low radar cross-section contacts.
- Targeted Coverage
Deploy scalable sensor networks in high-risk zones for persistent situational awareness.
- Amplified Resilience
Minimize downtime and maintain operational continuity with real-time threat detection and response.
Real-Time Tailored Alerts
We learn what's “normal” in your environment - then alert you to anomalies. From fishing boats to military activity, our alerts are customized and actionable, integrating seamlessly into your existing operations.
Rapid Response
When every second counts, our teams are ready to deploy globally and immediately to mitigate threats and restore service.
After-Action Assessment
Post-incident, we deliver data-supported reports to help you understand what happened, why, and how to prevent recurrence.
Powered by Advanced Technology
- Real-time underwater activity tracking
- Enhanced threat detection
- High-fidelity data
- Proactive risk mitigation
- Energy-harvesting systems
- Advanced signal processing
- Real-time automatic reporting
- Supplemental data transmission
- Data collection & processing
- AI-driven analysis
- Real-time reporting
- Secure data storage & access
Specialized for Undersea Cable Infrastructure
We specialize in protecting subsea cables and pipelines - the backbone of global communication and commerce. Whether the threat is malicious or accidental, we help you detect, prevent, and respond with confidence.
Aligning with National Security & Industry Best Practices
Our capabilities are built to support national security priorities and industry standards, ensuring your infrastructure is protected against today's threats - and tomorrow's.