From the back of the book:
Black Ice. 7,800 meters long - five times the length of an Imperial-Class Star Destroyer. The pride of the Imperial Replenishment Fleet.
Black Ice. It carriers nearly one billion tons of starship grade fuel cells - more than year's worth of power for an entire Imperial Main Battle Fleet.
Black Ice. If she remains in the Empire's hands, the Imperial Navy will cut a swath of destruction across the sector - and beyond.
Black Ice. The Empire will do everything in its power to protect her.
Black Ice. The Rebels must take her - or die in the attempt.