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Nomars: No Manning Required Ship
y The No Manning Required Ship (NOMARS) program has built a ship designed to operate autonomously for long durations at sea. Construction of the prototype unmanned surface vessel (USV), USX-1 Defiant, was completed in February 2025.
The NOMARS program aims to challenge the traditional naval architecture model, designing a seaframe (the ship without mission systems) from the ground up with no provision, allowance, or expectation for humans on board. By removing the human element from all ship design considerations, the program intends to demonstrate significant advantages, to include: size, cost, at-sea reliability, greater hydrodynamic efficiency, survivability to sea-state, and survivability to adversary actions through stealth considerations and tampering resistance. The DARPA NOMARS program has successfully launched the USX-1 Defiant, a 180’, 240-metric ton medium unmanned surface vessel designed to revolutionize autonomous operations at sea.
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