The 7th Fleet, or Seventh Fleet, was a fleet of the Imperial Navy during the reign of the Galactic Empire. Years before the outbreak of the Galactic Civil War, the fleet was considered an effective and powerful force as it had resolved major conflicts on the behalf of the Empire. The fleet was commanded by Fleet Admiral Sartan, until Sartan was replaced with Grand Admiral Thrawn around 2 BBY. At this time, Governor Arihnda Pryce of Lothal requested the aid of the Seventh Fleet to deal with the rebel Phoenix Cell.
Thrawn used the 7th Fleet to blockade Lothal, where he had set up his TIE Defender factory, and later to drive Phoenix Group from their base on Atollon. The fleet was defeated in 0 BBY during the Liberation of Lothal, where the Jedi Ezra Bridger called upon purrgil to defeat the fleet over Lothal, and then to make Thrawn’s flagship, Chimaera, with himself and the admiral on its bridge, jump into hyperspace.
A fleet in the Imperial Navy, the 7th Fleet’s flagship was the Chimaera, and consisted at least nine Imperial I-class Star Destroyers, as well as at least sixteen Imperial II-class Star Destroyers. The Imperial-class Star DestroyerHarbinger was tentatively attached to the fleet at one point. It also possessed at least twelve Arquitens-class command cruisers, at least nine Gozanti-class cruisers, and at least four Dreadnought-class heavy cruisers. Additionally, at least two Interdictor-class Star Destroyers—Konstantine’s Interdictor-class Star Destroyer and the Constrainer—were utilized.[10] During the fleet’s operations on the Lothal, at least five ICM-092792 construction modules were placed in the planet‘s orbit.
The Seventh Fleet had a range of organizations and groups under its umbrella. The Chimaera‘s analysis group was the tactical analysis group aboard the Chimaera. At the time of the Lothal campaign, they were considered completely trustworthy by the Grand Admiral, and were to assist in analyzing gralloc movements and cargo shipments and related data. Despite this, Imperial Military Department of Advanced Weapons Research Assistant Director Colonel Brierly Ronan denied that the analysis group could see the sensitive information as it related to Project Stardust. Also under the Seventh Fleet, was the Defender program, a TIE line initiative instigated by Grand Admiral Thrawn and under his auspices.
Due to Thrawn’s relationship with Emperor Palpatine, the Grand Admiral was assigned a contingent of death troopers. The Seventh Fleet utilized ground units, with Major Carvia commanding the Chimaera‘s stormtrooper forces. The Seventh Fleet also maintained an armored division that was deployed in the Battle of Atollon.