Carrier

Were you looking for Flood Carrier Form? A carrier is a general starship classification, with warships of different sub-classifications within the UNSC and Covenant fleets. Such a vessel is formally defined as "a large warship carrying fighters equipped with flight decks for takeoffs and landings". There are multiple classes of carrier within this general designation.

Role
Typically the size of cruisers or larger, the general combat role of a carrier in combat is analogous to a seaborne aircraft carrier; to deploy starfighters, such as Seraphs or Longswords. Aside their fighter complements, carriers also possess weapons themselves, to protect themselves in combat when their fighters are unable to defend them. In planetary occupation missions, carriers are mobile deployers of ground forces to subjugate an enemy planet, launching dropships and top-cover fighters.

The navies of the UNSC and the Covenant have different classifications of carriers. For example, the Covenant sport, assault carriers, and supercarriers. Assault carriers are on the scale of five kilometers long while supercarriers can have a length of 27 kilometers, giving a scale of the keel length of carrier-type warships. In the Covenant, carriers typically serve as the flagship of a fleet, while in the UNSC, the role is more commonly filled by cruisers.

UNSC carriers

 * UNSC supercarrier
 * Phoenix-class colony ship
 * UNSC carrier