The USX-1 Defiant is a prototype USV developed under DARPA’s NOMARS program, designed as the first warship conceived from the ground up to operate without crew. Built for long-duration autonomous naval missions, it incorporates autonomous refueling at sea and high-reliability architecture.
| Manufacturer | Serco |
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| Availability | Purchasable |
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The USX-1 Defiant is engineered for extended autonomous operations at sea, with a design emphasis on high reliability and minimal human intervention. It incorporates advanced autonomous navigation and operational systems, enabling it to conduct missions without onboard crew. A notable feature is its capability for autonomous refueling at sea, demonstrated in tests where unmanned vessels successfully conducted refueling operations without human assistance on the receiving vessel.
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