. . . "The Fleet class USV is an Unmanned Surface Vessel designed for the United States Navy to be deployed from Freedom and Independence-class littoral combat ships and intended to conduct mine and anti-submarine warfare missions. four ships of the class have been built; the first was delivered to the U.S. Navy in 2008."@en . "The Fleet class USV is an Unmanned Surface Vessel designed for the United States Navy to be deployed from Freedom and Independence-class littoral combat ships and intended to conduct mine and anti-submarine warfare missions. four ships of the class have been built; the first was delivered to the U.S. Navy in 2008."@en . . "300"^^ . "Fleet-class unmanned surface vessel"@en . . . . . . . . "A Fleet class vessel in 2012"@en . . .