A Star Destroyer was a dagger-shaped type of capital ship that were used by the Galactic Republic, the Galactic Empire, the First Order, and the Sith Eternal. Notable examples of Star Destroyers include the Imperial-class Star Destroyer and its predecessor the Venator-class Star Destroyer.
The Republic’s Acclamator-class assault ship was a 752 meter-long cruiser that was considered to be a proto-Star Destroyer. Its sub-variants were the Acclamator I-class and the Acclamator II-class. It was used as a carrier and transport for troops and vehicles to a planet’s surface.The Venator-class Star Destroyer was a class of cruiser 1,137 meters in length was also referred to as the Republic Attack Cruiser or Jedi cruiser that was considered a proto-Star Destroyer. It consisted of two sub-variants, the Venator I-class and the Venator II-class, and was extensively used by the Galactic Republic during the Clone Wars and by the early Galactic Empire.
The successor of the Venator-class, the 1,600 meter-long Imperial-class Star Destroyer was also classified as a cruiser. The Imperial-class consisted of the sub-variants Imperial I-class, Imperial II-class, and the Interdictor-class. The Imperial-class became symbols of the Empire’s New Order. The Interdictor-class Star Destroyer, also known as the Interdictor-class heavy cruiser, was a class of heavy cruiser that was also part of the Star Destroyer family of ships used by the Empire. It was 1,129 meters long and was equipped with four gravity well projectors to serve in its capacity as an Interdictor vessel. The Onager-class Star Destroyer was also classified as a cruiser class, and was equipped with a superweapon that could destroy targets on the surface of a planet or entire fleets.
Another cruiser, in accordance with the Anaxes War College System, Gladiator-class Star Destroyer was the smallest Star Destroyer in the Empire’s arsenal at 600 meters in length. Despite its size, it was regardless heavily armed and was deployed as a patrol ship and escort. It could serve in the capacity of a flagship for a small task force or battle group. The Gladiator I was a sub-variant of the ship.