ThayerMahan, Inc.
Maritime TransportationConnecticut, United States51-200 Employees
ThayerMahan, Inc. operates in the maritime transportation sector and focuses on autonomous maritime surveillance and offshore solutions. Its approach is built on engineering excellence, military leadership, and safety-first innovation, with a goal of delivering scalable, mission-ready technologies. In March 2026, the company announced SeaGuard, a non-kinetic unmanned underwater vehicle defeat system designed to defend ports, critical infrastructure, and high-value maritime assets from undersea threats. The company is based in Groton, Connecticut, and operates as a mid-sized organization within the autonomous maritime surveillance and offshore solutions sector. Its products are aimed at operators responsible for protecting ports, critical infrastructure, and other valuable maritime assets from underwater security risks.