Unidentified UNSC stealth ship

"Impressive. Looks like they were designing a new stealth-class vessel."

- Frederic-104 or Kelly-087 upon seeing the vessel in it's bay.

An unidentified stealth ship was being constructed by the UNSC's Office of Naval Intelligence on the Argent Moon.

Service history
A ship of the class was first constructed in 2557 in the Argent Moon. It was still aboard when the station was lost with all hands.

The remains of the ship became a battle ground when Blue Team boarded the station in 2558. Blue Team had to pass through it in order to reach the station's data center. The ship was destroyed along with the rest of the Argent Moon sometime later.

List of appearances

 * Halo 5: Guardians