Ghost Fleet Overlord

Ghost Fleet Overlord  is a fleet of test unmanned surface vehicles operated by the U.S. Navy.

Ghost Fleet Overlord is being developed by the Department of Defense’s Strategic Capabilities Office. It is a partnership between the Defense Department's Strategic Capabilities Office and the Navy.

Vessels
As of January 2024, the fleet consists of four ships delivered. The first is USV Ranger, the second is USV Nomad, the third is USV Mariner, and the fourth is USV Vanguard, launched on January 15, 2024.

While technically "uncrewed", the ships carry a crew of six human sailors. Most of the ship's functions are automated, but can be carried out manually by the onboard human crew if the need arises.

Weapons
USV Mariner is outfitted with next-generation command and control systems and a virtualised Aegis Combat System. Its test will help in putting combat systems on Large Unmanned Surface Vehicles.