An unmanned surface vehicle, unmanned surface vessel or uncrewed surface vessel (USV), colloquially called a drone boat, drone ship or sea drone, is a boat or ship that operates on the surface of the water without a crew. USVs operate with various levels of autonomy, from remote control to fully autonomous surface vehicles (ASV).
In February 2022, the Japanese passenger ferry Sunflower Shiretoko sailed autonomously for 750 kilometers.
British RNMB Harrier, an autonomous USV of the Atlas Elektronik ARCIMS mine warfare system (2020)
A passenger USV demonstration at Hampton, Virginia, United States (January 2009)
USV used in oceanographic research (June 2011)
Mitsubishi Heavy Industries
Mitsubishi Heavy Industries, Ltd. is a Japanese multinational engineering, electrical equipment and electronics corporation headquartered in Tokyo, Japan. MHI is one of the core companies of the Mitsubishi Group and its automobile division is the predecessor of Mitsubishi Motors.
Headquarters in Marunouchi, Chiyoda, Tokyo
The Mitsubishi Dockyard at Nagasaki, Meiji Period
The launch of battleship Tosa at the Nagasaki Shipyard, 1921
Mitsubishi Heavy Industries building in Yokohama, Japan