"A picket ship was a type of military spaceship. Inquisitor Jerec's battle group included about twenty picket ships."@en . . . . . "A picket ship is a vessel that is usually deployed in advance to detect hostile forces and provide advanced warning. As such these vessels are equipped with powerful sensors."@en . . "A picket ship is a vessel that is usually deployed in advance to detect hostile forces and provide advanced warning. As such these vessels are equipped with powerful sensors."@en . . . . . "A picket ship was a type of military spaceship. Inquisitor Jerec's battle group included about twenty picket ships."@en . . "Picket ship"@en .