When the Trade Federation joined the Confederacy of Independent Systems, they later created that the Lucrehulk-class Droid Control Ship would let the B1 Battle Droids function even if they destroyed the Control Ship its self. If the Control Ship blew up, the droids would shut down and the Trade Federation's Droid Army would be useless. During the Pre-Clone Wars, Lucrehulk-class Droid Control Ships were painted grey and they controlled all of the Battle Droids from their communications arrays. The Lucrehulk-class Droid Control Ship, or also known as the Separatist Battlecruiser or simply just the Droid Control Ship (DCS) is a massive Confederate Warship and later New Confederacy of Independent Systems Warship used as a Battleship, Blockade, and Destroyer. Modified Lucrehulk-class LH-3210 cargo freighter
