Arc Hammer The Arc Hammer was an Imperial spacefaring production facility used to supplement the Imperial Stormtrooper Corps with dark trooper s , a new generation of battle droid stormtroopers to be used in the Galactic Civil War against the Rebel Alliance . Characteristics . The " Arc Hammer " was a factory ship of a unique design . Like many other Imperial starships , the " Arc Hammer " had a long , narrow , dagger - shaped hull ; however , it also had four large columns surrounding a central one that protruded from below and a small , flat bridge structure in front of the columns on its dorsal side . The " Arc Hammer " served as a primary testbed of the Dark Trooper Project , a brainchild of General Rom Mohc which was to create larger , more powerful robotic versions of stormtroopers . The Dark Troopers were developed inside the vessel . Construction lines filled the interior and four large ventral hangars were responsible for receiving cargo vessels and loading batches of dark troopers into transports or deploying them directly above a target world . The " Arc Hammer " was equipped with enough weaponry to defend itself in space battles . The inside of the " Arc Hammer " was a large maze and was very similar to that of other Star Destroyer designs . The inside contained large amounts of conveyer belts and moving vertical columns for maximum Dark Trooper construction . The " Arc Hammer " cost billions of credits to construct . History . The " Arc Hammer " was a titanic space faring construction facility constructed at Kuat Drive Yards and was classified as a dreadnaught . After the destruction of the newest Imperial superweapon , the Death Star in 0 BBY , the Empire started to share General Rom Mohc ' s views , who considered that all soldiers should be given a chance to face each other in a one - on - one combat . Mohc eventually persuaded the Imperial officials to greenlight the Dark Trooper Project , which involved creating droid versions of Imperial stormtroopers . To this end , he was provided with the " Arc Hammer " . In order to ensure secrecy of the project , the factory frequently made jumps to hyperspace , and only one ship , the Dark Lord of the Sith Darth Vader ' s Super Star Destroyer " Executor " , knew its exact position at any given time . The Dark Trooper project proceeded quickly , and by 0 ABY the first working prototypes were made . To demonstrate the power of the Dark Troopers , it was arranged to attack the Rebel Tak Base on the planet Talay . The demonstration was successful ; only one Rebel ship managed to escape from the planet , although it was boarded by a Dark Trooper as well , who then killed all crew aboard . The Tak Base itself was destroyed with all hands . However , before its destruction , Admiral Toka managed to send a distress signal . After receiving the distress signal , the Rebel - allied mercenary Kyle Katarn was assigned to investigate the loss of Tak Base . While there , Kyle discovered a large gun , too cumbersome to be efficiently wielded by a regular stormtrooper . Eventually , after investigating various secret Imperial factories and weapons scientists , he learned of the Dark Trooper Project , and infiltrated " Arc Hammer " via a cargo transfer . He later destroyed the ship by placing sequencer charge s throughout certain exhaust ports within the ship . Behind the scenes . The length of the " Arc Hammer " is determined by comparing it to " Executor " and several escorting in the first cutscene of the game . It is shown clearly to be about half the length ( and slightly smaller ) than the " Executor " , albeit being further away from the camera than the Star Dreadnought . Another way to calculate it more precisely is to compare it with the " Imperial " - class Star Destroyers that are closer to the camera than it . The " Arc Hammer " is at least 6 times the size of a Star Destroyer that is closest to it ; therefore , the " Arc Hammer " is definitely longer than 9 . 6 km . " " has the " Arc Hammer " at a fraction of the " Executor " ' s size , and is more or less the size of an " Imperial " - class Star Destroyer . The reasoning behind this is that the ship ' s role is as a factory and research facility and would therefore not need to be as big as the " Executor " . The game ' s Prima guide claims the ship is the size of a Star Destroyer , but since that term has been used to describe ships in size from the " Demolisher " to the " Executor " , this provides no clear estimate . " Sand Blasted " shows a different and inconsistent version of the factory , which resembles a proper Star Destroyer with two columns protruding from the fuselage .