At least 9.6km long, almost half as long as an Executor-class Star Dreadnought, the Arc Hammer was essentially an armed factory ship that also served as a command ship for the Dark Trooper Project. The design was very sleek compared to other Super Star Destroyers (similar only to Jerec's ship), and noteworthy for a large quadruple tower structure protruding from the dorsal and ventral side in the general area of the bridge structure. Dorsal bays could launch the ship's complement of Dark troopers onto a target in a combat drop. The Arc Hammer was destroyed from within by Kyle Katarn's sabotage