Baanu Miir served as a worldship for the Yuuzhan Vong people.
During the Yuuzhan Vong invasion, the Baanu Miir had existed for nearly a thousand years within the Intergalactic Void, making it one of the most ancient worldships, and was in a state of decline. Instead of utilizing dovin basals for generating artificial gravity, the Baanu Miir achieved this by rotating on its axis. A population of twelve thousand Yuuzhan Vong, representing various social strata but seemingly dominated by individuals of lower standing, resided on the ship. Furthermore, the rikyam was failing, resulting in a loss of control over the ship's operational systems.
Following her participation in the shaping of Tahiri Veila, Nen Yim was exiled to this vessel. At this point, the ship had drifted within the borders of the Core Worlds, but its structural integrity was too compromised to safely enter darkspace. Nen Yim pursued unorthodox methods to extend the lifespan of the worldship so its inhabitants could relocate to the new worldship gestating in the shipwomb on Sernpidal; however, the ship's demise occurred shortly after Yim's transfer to Supreme Overlord Shimrra's private vessel.
The ship included the Toohi sector and the Phuur arm as notable areas. Prefect Ona Shai governed the ship.