The Battle of Castobel
Eagle of Vengeance
Currently situated along the Orpheus Salient it is positioned on the outer rim of what is still under imperial control. More precisely it positioned less than 2 Astronomical units away form Castobel and the Adeptus Ministorum have proclaimed it as a sign from the Emperor, that the faithful of Castobel are delivered from the predations of Hive Fleet Dagon. The Deathwatch, however have their suspicions about the hulk, and are sending in a strike team to examine and catalogue the appearence of the mysterious space ship.
It is known as the capital battle ship for the Amber Serpents, a lost chapter from the Dark Founding, that went missing in the 37th millenia.