Meniscus

Meniscus was the personal Imperial-class Star Destroyer of Grand Admiral Martio Batch. The executive officer of the Meniscus betrayed and executed Batch following the Battle of Endor, and joined Harrsk in the Deep Core.

Behind the scenes
Dan Wallace originally named the Meniscus in a segment of his Grand Admirals article that was cut, and is therefore unofficial. All other information on it is official.