The Shadowstar was an Experimental cruiser designed and built by the Empire in 5 BBY. Equipped with an experimental hyperdrive, the Shadowstar was able to reach destinations faster than any other vessel. During it's first test run however, the Shadowstar's hyperdrive failed, sending the cruiser into hyperspace, thought to never be seen again. But reports of a ship with it's dimensions exiting and almost instantaneously entering hyperspace have appeared, as late as 18 ABY.