Blood Ravens - Chapter Fleet: The Blood Ravens have existed as a fleet-based Chapter since the loss of their original homeworld of Aurelia to the Warp in the 40th Millennium. The basis for this decision is unclear, as their millennia of stalwart service certainly qualifies the Chapter for possession and control of another Imperial world. It may be that the decision was made for reasons lost to their history, which has been preserved for traditional reasons rather than functional ones.To fulfil their duties, the Blood Ravens possess several battle barges, but their great mobile fortress-monastery, the Omnis Arcanum, is the largest vessel of their fleet and serves as their primary gene-seed repository. This vessel also houses the Chapter's sacred Librarium Sanctorum and copies of all the knowledge the Chapter has discovered during its missions across the galaxy.Each of the Chapter's battle barges maintains its own Librarium as well, where all of their active records and new findings are recorded. However, only a subset of the Blood Ravens' complete findings -- particularly information concerning the Warp, archeotech, and the ways of xenos -- are stored in these lesser Librariums. Through the course of their history, companies have often been assigned to extended duty apart from the main portion of the Chapter's fleet.During such missions, these independent Librariums serve as interim storage of knowledge and a valuable resource for reviewing the less-volatile lore that the Chapter maintains. Any time that one of the auxiliary battle barges reestablishes contact with Omnis Arcanum, an exchange of information is undertaken, so any new information is returned to the Librarium Sanctorum, while new data deemed safe for dissemination is provided to the lesser battle barges.One critical limitation of a fleet-based Adeptus Astartes operation is a restriction in the availability of new candidates for initiation. The Blood Ravens overcome this difficulty by recruiting from a number of worlds, with which they have long-established relations, most of which are in the Sub-sector Aurelia of the Korianis Sector. These worlds range from Feral Worlds, colonised by the remnants of ancient Human civilisations, to Hive Worlds, where gangers fight daily with whatever weapons they can scrounge, living off the scrapings of Imperial society.The only trait that these worlds share in common is a higher than normal frequency of psykers amongst their population. While the Blood Ravens Chapter does not exclusively recruit psykers as candidates, those who show psychic talents survive their initiation rates at a much higher frequency than is observed among most other Chapters.The Chapter fleet of the Blood Ravens is known to contain the following starships:Omnis Arcanum (Battle Barge) - The Omnis Arcanum is the flagship of the Blood Ravens fleet and the location of the Chapter's primary Librarium, the Librarium Sanctorum. However, little more is known about this venerable warship, where it travels or even if it really does serve as the home of the Chapter Master of the Blood Ravens.Dauntless (Battle Barge) - A battle barge of the Blood Ravens that served as the flagship of Chapter Master Gabriel Angelos during the Acheron Campaign. During that conflict, the Craftworld Aeldari Farseer Macha urged Angelos to sacrifice the Dauntless to cripple the Bloodthirster known as the "Storm Prince" by ramming it into a frozen fissure on the planet's frigid surface, sacrificing the lives of the Astartes and mortals aboard the great vessel but preventing the Greater Daemon from wreaking havoc across the galaxy in the name of the Blood God Khorne. Angelos did so, and the impact of the great vessel at such a weak point in the planet's tectonic structure caused the benighted world to begin to crack apart. With Acheron fragmented and destroyed, the Storm Prince quickly diminished in size and strength as his access to all the psychic power of the souls slain in the world's vicinity was lost, allowing Angelos, Macha and the Ork Warboss Gorgutz to banish the creature back to the Warp. Though this sacrifice cost many lives, countless more across the galaxy were doubtless saved.Litany of Fury (Battle Barge) - A venerable warship of the Blood Ravens' 3rd Company, the Litany of Fury carries a great many secrets within its hold and is a beacon of light in the darkness of the Eastern Fringe, where the light of the Astronomican wanes. The Sanctorium Arcanum is a secret vault within the battle barge, tended by Librarians of the Chapter initiated into the Secret Orders of Psykana of the Blood Ravens. The Sanctorium Arcanum is an astropathic choir in mimicry of the Astronomican itself, a mobile psychic repeater station intended to boost the light of the Astronomican in the distant reaches of the Eastern Fringe. The Sanctorium Arcanum, like many relics of the Chapter, was created by the Great Father Azariah Vidya and its true origins and function have been lost to the mists of time, yet it is still maintained by the Librarians of the Chapter.Scientia Est Potentia (Battle Barge) - A battle barge that serves as the flagship of the Blood Ravens 5th Company.Armageddon (Strike Cruiser) - Former flagship of the Blood Ravens 5th Company, lost during the battle for the Aurelia Sub-sector in the Third Aurelian Crusade.Glory of Calderis (Strike Cruiser) - Strike cruiser under the command of Captain Atanaxis of the Blood Ravens 7th Company.Rage of Erudition (Strike Cruiser) - Strike cruiser under the command of Sergeant Saulh.Ravenous Spirit (Strike Cruiser) - This strike cruiser was in service to then-Captain Gabriel Angelos during his mission to Cyrene.Retribution (Strike Cruiser) - This strike cruiser was assigned to the remnants of the 5th Company following the loss of the Armageddon.