The ship is of early Forerunner design and was discontinued by the Forerunner navy shortly before the flood war. The Acacians found one of these ships on their home planet of Grathos. The ship is obsolete in forerunner standards but is about the equal of Covenant technology. It utilizes a beam weapon similar to Sentinels beam weapon. Due to the age of the technology the weapon does the same amount of damage as the covenants energy projector. This is the only ship used by the Acacian Alliance.
The ship is somewhat reminiscent of a Forerunner Sentinel but on a much larger scale. In the top part is the command bridge, along with it being the center of attention it is the most heavily armored. The main energy weapon is also in this area.
Since the ship design is old, it's armor isn't nearly as strong as the Dreadnought's in High Charity. It can withstand 2 MAC shells before being destroyed, however.
As with all Forerunner combatants, the ship has shields. These are in the same likeness as the ones the Covenant imitated on their own ships. Albeit they are weaker than the Covenant's shields they can recharge faster.
A list of some well known vessels of this class:
- UASS White Destiny
- UASS Looming Guardian
- UASS Acacian Spirit
- UASS Justice's Instrument