Dawn of Insurrection
The EF76 Nebulon-B escort frigate was a 300-meter-long warship that was built by Kuat Drive Yards for use by the Imperial Navy, to protect convoys from Rebel Alliance starfighter actions. It was, however, used more famously by the Rebellion.
It is apparently owned by Bail Organa. The ship spends all of its time in deep space, between worlds and away from major hyperspace routes, and it currently serves as a mobile safe house for former Imperial Admiral Gilder Varth.