Anti-Submarine Warfare Continuous Trail Unmanned Vessel

Overview
The Anti-Submarine Warfare (ASW) Continuous Trail Unmanned Vessel (ACTUV) is developing an unmanned vessel optimized to robustly track quiet diesel electric submarines.

Source

 * Alexander M. G. Walan, "Anti-Submarine Warfare (ASW) Continuous Trail Unmanned Vessel (ACTUV)," DARPA (full-text).