It consisted of three variants, the Imperial I -class, the Imperial II -class, and the Interdictor -class. A smooth hull presents an arrowhead shaped profile when viewed. The Imperial-class Star Destroyer ( ISD) known generally as the Imperial Star Destroyer or as an Impstar, was a product line of massive dagger-shaped capital ships of the Imperial Navy and later the Navy of the First Order. The Imperial V-class Star Destroyer was the fifth generation of the Imperial-class Star Destroyer line, having superior armour and weaponry compared to her lower, out-dated siblings, the Imperial V-class was more favoured by the New Empire than the Imperial I, II, III and IV-class Star Destroyers. The Imperial V-class Star Destroyer was the fifth generation of the Imperial-class Star Destroyer line, having superior armour and weaponry compared to her lower, out-dated siblings, the Imperial V-class was more favoured by the New Empire than the Imperial I, II, III and IV-class Star Destroyers. The Imperial II-class Star Destroyer, also known as the Imperial II-class Destroyer and colloquially the 'ImpStar Deuce', was a Star Destroyer model that was derived from the Imperial I-class Star Destroyer. The Super Star Destroyer is one of the largest, most powerful Imperial vessels ever created.

Imperial 3 class star destroyer