ASW Continuous Trail Unmanned Vessel

The ASW Continuous Trail Unmanned Vessel (ACTUV) is a DARPA funded project launched in early 2010 to develop an anti-submarine drone (unmanned surface vehicle). ASW is an acronym for Anti-Submarine Warfare. In January 2018 after successful sea trials it was announced that the "Sea Hunter" prototype has transitioned from DARPA to the Office of Naval Research for further development.^[1]

While the ACTUV program is focused on demonstrating the ASW tracking capability the core platform and autonomy technologies are broadly extendable to underpin a wide range of missions and configurations for future unmanned naval vessels.

The ACTUV will be "a first unmanned naval vessel that is designed and sized for theater or global independent deployment". The aim of the four part program is to develop a surface vessel optimized to overtly track and trail target submarines. A suite of sensors "capable of tracking quiet, modern diesel electric submarines" will be implemented into the completely unmanned vessel.

ACTUV will operate under minimal supervisory command and control; with shore bases intermittently monitoring performance and providing high-level mission objectives through beyond line-of-sight communications links. The vessel will be provided with advanced autonomous navigation and anti collision features to keep it within maritime law and the International Regulations for Preventing Collisions at Sea.