Unidentified UNSC frigate class

This unidentified frigate is an escort warship class in service with the UNSC Navy.

Design
About 242.4 meters in length, the ship is fairly narrow on the port-starboard axis. Propulsion is provided by a single fusion drive. Like other frigate classes, it possesses port and starboard "wings" and has a laterally split hull. It bears a passing resemblance to the Strident class; however, the bridge section is sleeker, shorter, and located farther aft. A blister with several viewports is on the dorsal surface near the bow. At least two hangar bays are mounted on either side; on post-war models, these bays are sealed with energy shield doors like those used by the Covenant. A pair of twin-linked point defense guns are mounted on the mid-ventral surface, as are the ship's SOEIV deployment bays.

Service history
At least one of these frigates was used to deploy Orbital Drop Shock Troopers during an unknown battle in October 2552. During the Battle of Earth in July 2557, three ships of this class escorted the as part of Battlegroup Dakota. They engaged the Didact's flagship, Mantle's Approach, though they could not prevent him from activating the Composer and killing millions of residents in New Phoenix, URNA.

Behind the scenes
These ships are intended to appear only in the background during the level Midnight. However, exploiting a glitch allows the player to examine these vessels up close, along with two other theretofore-unseen classes. 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.

List of appearances

 * Halo 4
 * Halo: Initiation