History | |
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Builder | |
Christened | 11 August 2025 [1] |
General characteristics | |
Displacement | 240 metric tons |
Length | 180 feet (55 m) |
Speed | 20 kts |
Complement | 0 |
The USX-1 Defiant is a unmanned warship built as a demonstration project by the Defense Advanced Research Projects Agency (DARPA) and completed in February 2025 [2] [3] and began sea trials in following month. It was first seen in public in March 2025 near the U.S. Navy's Naval Air Station (NAS) Whidbey Island. [4] The ship has an LOA (length overall) of 180 feet with a 240 metric ton displacement. [5] Defence Shipbuilder Serco oversaw the project. [6]
During sea trials at Port Hueneme, California, the NOMARS validated apabilities of the Defiant, including successful demonstration of automated at-sea fueling. The USX-1 Defiant also tested high-speed turns and speed tests at up to 20 knots. Defiant also achieved automated dockings, undockings and harbor entry and exit. [7]