Vigilantes were a class of mid-sized Peacekeeper warships. At presumably several hundred meters in length these ships were dwarfed by the Command Carriers whom they were often seen escorting. In addition to convoy escort duty Vigilantes are also used to lead retrieval squads to capture escaped prisoners or Leviathans. Vigilantes had their own living quarters, room for large quantities of supplies, could carry Prowlers and presumably one or more Marauders as well, making them autonomous warships that could act independently from Command Carriers or bases for extended periods of time. When acting in groups Vigilantes could take on far larger warships such as Scarran Dreadnoughts, but even on their own they were a threat to less powerful species.