Robot warships are here. Now the Navy needs to figure out how to use them.

Robot warships are here. Now the Navy needs to figure out how to use them.

The future on the high seas for the Navy may be one without sailors. Unmanned ships like the USS Mariner and Ranger, and the recently launched USX-1 Defiant, are opening up a world that gives the Navy and other branches incredible capabilities on the water, no seamen necessary. This quest for drone warships began in earnest in 2010 under the Defense Advanced Research Projects Agency’s (DARPA) Anti-Submarine Warfare Continuous Trail Unmanned Vess…