Sea Hunter, an entirely new class of unmanned sea surface vehicle developed in partnership between the Office of Naval Research (ONR) and the Defense Advanced Research Projects Agency (DARPA), completed an autonomous sail from San Diego to Hawaii and back—the first ship ever to do so autonomously. US Navy photo.
As the Pentagon prepares for a fight in the vastness of the Indo-Pacific, the Defense Advanced Research Projects Agency (DARPA) is developing a concept it hopes will allow unmanned...
https://news.usni.org/2020/11/02/darpa-aiming-to-increase-usv-range-with-sea-trains-program