Two defense startups are joining forces to put a hypersonic weapon on an autonomous warship — a combination that could reshape how navies project firepower without risking sailors.
Saronic, which builds unmanned surface vessels, and Castelion, which is developing hypersonic strike capabilities, announced a partnership to integrate Castelion's Blackbeard system onto Saronic's Marauder medium unmanned surface vehicle, or MUSV. According to Breaking Defense, the firms have set a maritime launch demonstration for 2027.
The Marauder is a crewless boat designed to operate independently at sea. Pairing it with a hypersonic weapon — a class of missile that travels at speeds exceeding Mach 5, making it extremely difficult to intercept — would allow the Navy to strike targets at long range from a vessel that puts no crew in harm's way.
Hypersonic weapons have become a focal point of great-power competition. Both China and Russia have fielded hypersonic missiles, and the U.S. military has been racing to close the gap. Launching such weapons from an unmanned ship could multiply strike options while keeping manned vessels farther from contested areas.
The 2027 demonstration timeline is aggressive by defense acquisition standards, signaling confidence from both startups that the integration is technically achievable in the near term.
If successful, the pairing would mark a significant step toward autonomous, hypersonic sea power — putting cutting-edge strike capability on platforms that can be fielded in larger numbers and at lower cost than traditional warships.