The attack on the CNV Sovereign was an assault by Lambent creatures in 17 A.E. Polyps, Lambent Drones, and Drudges boarded the vessel while it was near the shore of Southern Tyrus to support elements of Delta-One during the Mission to Hanover. The battle ended when a Lambent Leviathan attacked the Sovereign and exploded, causing what remained of the vessel to crash on the beaches near Hanover. Most of the crew survived the attack, but were scattered and lost many vital supplies.