Dreadnaught-Four, often abbreviated as D-Four, represented the fourth heavy cruiser in the six-ship Dreadnaught-class heavy cruiser deployed for the Outbound Flight initiative.
Originating directly from the production line of Rendili StarDrive, it was integrated into the project in 27 BBY. Throughout the Outbound Flight's mission, Commander [Omano] oversaw the Dreadnaught-Four, while Master Justyn Ma'Ning headed its associated Jedi forces.