Quite possibly the coolest ship in the Navy.
DARPA to Develop New Unmanned Vessel
DARPA’s Anti-Submarine Warfare (ASW) Continuous Trail Unmanned Vessel (ACTUV) seeks to develop a new type of independently deployed unmanned surface vessel (USV) that would track adversaries’ ultra-quiet diesel-electric submarines over thousands of miles at a fraction of current costs. ACTUV would operate under sparse remote supervisory control and safely follow the maritime “rules of the road” for collision avoidance known as COLREGS. Read more at http://bit.ly/1CRqgRv