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There are three main heavy-tonnage carrier classes: the DDS-class carrier, the CAS-class assault carrier, and the CSO-class supercarrier. The Covenant sometimes referred to these classes as "supercarriers" to distinguish them from lighter carrier vessels that filled support roles.
There is also another model of Covenant supercarrier, which has a length of 32,490 meters (106,593 ft). Very large and powerful warships rarely documented by the UNSC, like other models of supercarrier they are often used as flagships for Covenant fleets, and may be used by Prophets as their personal command ships. One, the Sublime Transcendence, led the Combined Fleet of Righteous Purpose, while another commanded the Second Fleet of Homogeneous Clarity.
There is also an unidentified model of light carrier. Measuring 1,455 meters (4,790 ft) in length, it boasts 13 launch bays that contain a total of 300 Seraph fighters, 200 Banshees, and 34 dropships, and is crewed by more than 4,000 Covenant troops. It is armed with multiple plasma torpedo silos and pulse laser turrets. As it is less common and more powerful than a Covenant cruiser, it is most likely designed to act as a command ship and provide fighter support during engagements.
Covenant forces have long made use of various carrier classes within their fleets.[Note 1]
For a number of years leading up to the Human-Covenant War, several Covenant carriers were served as support ships and some along with "supercarriers" were assigned in the Second Fleet of Homogeneous Clarity of the defense fleet of High Charity. On July 17, 2552, a carrier, escorted by a pair of Covenant frigates and a destroyer, attempted to seize control of the human colony world Sigma Octanus IV. When the destroyer and the two frigates were destroyed by Captain Jacob Keyes, the carrier retreated until reinforcements arrived. However, the carrier did succeed in deploying 34 dropships to the surface of the planet to initiate an invasion.
During the Battle of Installation 05 and the Great Schism, the light carrier Lawgiver assisted Incorruptible during the battle against the Jiralhanae and the Flood. A carrier would also go on assist Covenant forces in the Onyx Conflict later that month.
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