Poseidon-class light carrier

The Poseidon-class light carrier is a warship in service with the UNSC Navy following the Human-Covenant War.

Design details
The Poseidon-class carrier is sleek, elongated, and somewhat cylindrical in general shape. Its structure comprises two main sections covered with white plating; in the fore section, the plating mostly covers the vessel's dorsal surface. This plating is absent on most of the underside of the ship and in a spar connecting the two main sections. A series of rectangular blue lights are arranged in the sections lacking the white plating. 719 meters in length, the Poseidon is exceeded in both size and tonnage by the Orion, Epoch, and Punic carrier classes. It is armed with point defense guns and presumably at least one Magnetic Accelerator Cannon.

Service history
Several ships of this class were part of Battlegroup Dakota alongside a number of s and s. These ships engaged the Forerunner vessel Mantle's Approach during the Didact's attack on Earth on July 25, 2557.

Ships of the line

 * - The lead ship of the class.
 * - The lead ship of the class.

Behind the scenes

 * Several Poseidon-class light carriers appear in the background of the Halo 4 level Midnight; given their nature they are intended to be seen only from a considerable distance. However, exploiting a glitch allows the player to examine these vessels up close, along with a number of s and s. Because these ships are intended to appear only as scenery, they are rendered as brushes rather than level geometry; as such, the player can fly the Broadsword through them without harm. By the same merit the ships' in-game models are not to scale with their canonical incarnations.
 * The Poseidon-class carrier and Vindication-class battleship were to be featured in Halo 4: The Essential Visual Guide but were cut due to space constraints.

List of appearances

 * Halo 4
 * Halo: Legacy of Onyx