The XVI was the oldest surviving Ark at the time of the Orbital Wars. It was a unique design in the Ark Royal series in that it was designed to be reused. Whereas previous Ark Crews needed to demolish their Arks in order to reclaim the necessary resources to start a new civilization, the XVI was the first Ark where the propulsion core could be re-used to build a new Ark. Thus, after the new had grown to a substantial size, they would fill up the new Ark with a new group of colonists and the cycle would begin again. Due to unknown political reasons on Z-tel, this was the only Ark of it's kind.
During the Orbital Wars, the XVI was owned by the Union. By that time, it's colonizing function had been phased out and was being used as the space fleet headquarters for the Union. In fact, the official Union name for the ship was the Union Grand Master. The ship did not actually participate in any battles, due to the fact that the Union had declared a nuetral stance in the conflict, but it was used as the information and tracking center during the Wars.
[Ilona Bevan]? was stationed on the XVI during the Wars, and it was from there that she launched the [Union Reform Movement]?. In the years following the Orbital Wars, through [Practical Symbology]?, the numeral XVI became the insignia for the Movement.