The Indomitable was an Imperial-class Star Destroyer.
History
It was constructed at the Kuat Drive Yards shipyards on Kuat in 3 ABY. Shannon Voorson was able to slice its name along with several other Star Destroyer names and gave it to her cousin, Deen Voorson, a member of the Rebel Alliance.
Appearances
"Galaxywide NewsNets" — Star Wars Adventure Journal 9
"Slaying Dragons" — Star Wars Adventure Journal 9 (reprinted in Tales from the Empire and Hyperspace: The Official Star Wars Fan Club) (Mentioned only)