Interdictor - class Star Destroyer / Legends The " Interdictor " - class Star Destroyer was a variant of the " Imperial I " - class Star Destroyer equipped with gravity well projectors . Characteristics . Sienar Fleet Systems already produced an Interdictor , the Immobilizer 418 cruiser based on a 600 meter " Vindicator " - class heavy cruiser ( also used for the " Enforcer " - class picket cruiser ) . Though it was decently armed for its size , it was a high priority vessel that was generally unable to hold its own in combat , especially if the battle involved Imperial Star Destroyers and comparable vessels . Kuat Drive Yards decided to produce their own " Interdictor " offering to rival that of SFS by using an " Imperial I " - class Star Destroyer hull as a base . To make room for the gravity well projectors , half of the turbolasers and ion cannons , as well as eight of the Phylon Q7 tractor beam projector s found on the original " Imperial " - class Star Destroyer , had to be removed . . The " Interdictor " - class Star Destroyer ' s reduced hangar held sixteen TIE fighters . The " Interdictor " - class Star Destroyer did not require additional support when performing patrol and customs duties . Some bold commanders such as Loka Hask even used the ship to pull armed convoys out of hyperspace and destroy them . Nonetheless , like the Immobilizer , the gravity wells remained a major drain on the ship ' s main reactor . This had the potential to compromise defenses in heavy combat . For instance , while Loka Hask ' s " Dominator " had interdicted and was destroying a New Republic Convoy , Rogue Squadron ' s X - wings counter - attacked by hitting " Dominator " with a salvo of proton torpedoes . While an Imperial Star Destroyer ' s shields would have easily held up against such an assault , " Dominator " shields partially collapsed and the hull took some damage , prompting its commanders to call off the battle . Rogue Squadron also successfully used this tactic on the Immobilizer 418 cruiser " Aggregator " , which caused it to retreat . History . Ever since its conception , the " Interdictor " - class played a significant role in the Empire . Commanders frequently used these ships against pirate insurrections , and small pockets of resistance . Because this ship ' s capabilities prevented other ships from escaping , these vessels were also extensively used in raids and invasions . However , despite their capabilities , they were relatively rare in the greater Imperial Navy , mostly due to them " building big . " Leia Organa Solo , a high - ranking member of the Rebel Alliance , later noted that it was a hidden blessing for the Rebels that the Empire did not mass - produce the " Interdictor " - class and similar vessels . A ship of this class was used as a command ship by Lord Darth Vader in the months immediately after the Battle of Yavin , but it was destroyed above Jazbina by Rebel pilot Jal Te Gniev . An Interdictor Star Destroyer participated in the Battle of the Graveyard against Renegade Squadron . The Star Destroyer ' s gravity well projectors , which kept the Rebel fleet from fleeing , were destroyed . A few participated in the Attack on Bannistar Station . In the months immediately after the Battle of Endor , ships of this class , such as " Dominator " and " Binder " , seemed to have been specifically deployed in Imperial efforts to defeat the Rebels ' legendary Rogue Squadron . By 9 ABY , Grand Admiral Thrawn ' s fleet at the Battle of Bilbringi included a number of " Interdictor " - class Star Destroyers . Thrawn used these ships in many of his attacks in his campaign against the New Republic . Thrawn ingeniously used these craft on multiple occasions to pull his own ships out of hyperspace , making the jump more efficient , because the incoming vessels could scramble into a situation with almost unprecedented precision . Behind the scenes . Before a canon ical designation was known , Curtis Saxton documented this ship class on his Star Wars Technical Commentaries website . On his site , Saxton used the provisional name " " Dominator " - class Star Destroyer , " created after the class ' s first named representative , " Dominator " . The listing of Known Ships is controversial since " Binder " , " Constrainer " , and " Sentinel " were labeled as Interdictors , and presumed to be Immobilizer 418 cruisers in the novels . They were drawn as Interdictor Star Destroyers in the Dark Horse comic series . However , more corroborating evidence concerning this matter is based on these vessels and the way they are depicted in " " as Immobilizer 418 ships . The matter is still conjectural .