WASHINGTON DC – The Defense Department christened the Sea Hunter, a 132-foot robot ghost ship designed to seek out and track diesel-powered submarines across the ocean. The start of the test phase for the program on Thursday signals a new dawn for autonomous systems at sea, which, Pentagon officials say, will perform an ever-wider variety of jobs and could fundamentally change the way militaries operate on the water.

The Sea Hunter is the first of a new type of ocean drone, called an Anti-submarine Warfare Continuous Trail Unmanned Vessel, or ACTUV. The goal of the program: field an autonomous ship with the range and endurance to go anywhere in the world while avoiding collisions with other ships and obeying the rules of navigation.

“Current unmanned surface vessel systems and concepts are operated as close-adjuncts to conventional manned ships – they are launched and recovered from manned ships, tele-operated from manned ships, and are limited to direct support of manned ship missions. The ACTUVsystem will be a first of its kind unmanned naval vessel that is designed and sized for theater or global independent deployment,” reads the program’s description from 2014.

The vessel can travel 27 knots and was designed to stay at sea for as long as 70 days, but the actual voyage duration depends on fuel burn.

Patrick Tucker is technology editor for Defense One.