Ultima
this Imperial-I class Star Destroyer was the flagship of the armada dispatched by the Empire after the appearance of the Alderaanian armory ship Another Chance, shortly after the Battle of Yavin. Darth Vader had already stationed forces in the Graveyard of Alderaan, as a part of Operation Yavin Kill Two, but they managed to capture a team of Alliance agents instead of Leia Organa and Luke Skywalker. The Alliance managed to escape from the Graveyard with the Another Chance before the Imperial ship could disable it.