Emberhull is one of the most notable First Ships. While leaving Homeworld, it launched at such speed that the outer hull began to ignite in atmosphere. This served as a visual guide and inspiration for the following First Ships. The soft glow of the hull after launch is the source of the name Emberhull.
It was refitted to be a flagship during the Intelligence Wars. It's older design made it well suited for implementing AI resistant components. After that it was demilitarized and became one of the primary Galactic Trade Fleet ships. Over the generations many of the First Ships were decommissioned entirely but Emberhull persisted. As trade ships got bigger and more efficient it changed roles from a hauler to a diplomatic ship. While most ships in the Galactic Trade Fleet were self governing they would generally follow guidelines set by Emberhull. Likewise, when external governments wanted to interact with the Galactic Trade Fleet as a whole they'd typically go through Emberhull.
The Extinguishing of Emberhull occurred during the Genocide of the Galactic Trade Fleet.