Liberty, Executor-class Super Star Destroyer.
Formerly named Morak—it had been Wilhuff Tarkin's flagship.
When Tarkin had taken the Death Star on its expedition to Dawn Star Planet, he had not brought away the entire Fourth Army fleet under his command. He had only taken an escort fleet centered around 400 Star Destroyers.
After all, the Fourth Army was the foundation he had painstakingly built. Naturally, he would not simply abandon it. Moreover, Wilhuff Tarkin knew very well that he was not welcome at all within the Galactic Empire's power structure.
All his power and status came from Emperor Palpatine. Beyond that, he had neither an illustrious family background nor polished political skills. There had even been the scandal of his son, Garrosh Tarkin, colluding with the Rebel Alliance—others might not have known about it, but Isanne Isard controlled the Imperial Intelligence Bureau. Of course she knew every detail.
And most importantly, Palpatine had entrusted the Death Star to Wilhuff Tarkin.
Did they think Orman Tagge was the only person in the entire Galactic Empire who hated him over that? Of course not. There were no few people who loathed Tarkin to the bone because of the Death Star's ownership. It was simply that, among them, Orman Tagge had once come relatively close to obtaining it.
Everyone knew what it meant to control the Death Star. When they could not get their hands on what was practically the most powerful weapon in the entire Milky Way Galaxy, they naturally felt boundless jealousy and hatred toward the one who controlled it.
Therefore, Wilhuff Tarkin had also planned that once Dawn Star Planet was successfully destroyed, he would return with the Death Star to Fourth Army territory. If Isanne Isard still refused to submit, then he would proclaim himself Emperor on his own