Seasats Raises $20M to Scale Autonomous Naval Vessels as Defense Demand Climbs

Seasats has secured $20 million in Series A funding led by Konvoy Ventures, with backing from Shield Capital and other investors, bringing total funding past $40 million.

The autonomous maritime systems developer also reports more than $100 million in U.S. government contracts tied to growing defense and commercial interest in uncrewed ships.

The company builds small uncrewed surface vehicles designed for long missions at sea.

Its Lightfish security platform and interceptor craft have completed trans Pacific and trans Atlantic crossings, while one interceptor ran continuous operations for over a week.

The data points suggest reliability in real deployments rather than testing conditions.

“Robotics typically deliver value by automating tasks across one or more of the three D's: dirty, dull, and dangerous,” said Mike Flanigan, CEO and co founder of Seasats, highlighting how the firm focuses on prolonged routine missions rather than short autonomous runs.

Recent contracts from the United States Marine Corps and United States Navy, plus selection for the Accelerate the Procurement and Fielding of Innovative Technologies program, will help finance new facilities, expanded product lines and hiring as orders increase.

Defense agencies globally have intensified interest in robotic naval patrols after several 2025 security incidents involving commercial shipping routes in the Red Sea, which pushed governments to fast track unmanned surveillance fleets.

Seasats aims to position its vessels as a lower cost persistent presence for ports, coastlines and deployed forces.