The Ark

The Ark is the name of the massive, semi-mobile Ramilies-class Starfort that functions as the mobile fortress-monastery of the Omni Legion Space Marine Chapter. This massive edifice bristles with weaponry, and The Ark itself is heavily armed as befits its role and is fully capable of fighting off a fleet of attackers if need be.

Background
"The Ark", is a massive ship capable of housing the entire Chapter, their allies and fleet of additional ships should the moment arise. Commonly known as a Ramilies-class Starfort the Mechanicus of Roitheta hold a large presence on the ship as part of the agreement between the Omni Legion and Roitheta, all technology recovered by the Chapter is to be overlooked by both Explorator Zubayr and the Chapter's Lord Warden before it’s taken to Roitheta to ensure it’s condition and any additional research performed before it’s turned over.

The inside of this massive space fortress would appear to be an endless maze to those who have never traversed it's halls before, it takes several years of service before one becomes familiar with the paths. Companions of the Chapter are given their own comfortable beds in several living areas, those who serve an Omni Legion battle brother directly will share a living space with him. The closer one gets to the core of the ship the more dangers they could face unless accompanied by higher ranked Astartes. The inner sanctum of the Chapter's Reclusiam/Armorium are filled with those of the Chapter's 'Mechanists' (TechMarines), 'Wardens' (Chaplains) and Tech-Priests of the Mechanicus.

Typically The Ark will hold its position within the Roi Sub-Sector should it’s support be needed to defend their home. There have been reports of The Ark aiding in the support of Imperial fleets outside of their home sub-sector but such events cannot be listed here. As a mighty ship it is the command vessel of the Omni Legion's fleet, under the command of the Chapter Master.

Should the entire Chapter be dispatched to multiple campaigns they will leave the ship to their Companions with the Adeptus Mechanicus to watch over while protected by a small legion of Skitarii who’s weapons would reduce any intruders to vapor. While the Chapter may own the Starfort it is ultimately the Mechanicus of Roitheta that allow them to reside within their realm. It should be known that despite being seen as just a Fortress Monastery it is still a force to be reckoned with, even the infamous IInd Formation of the Omni Legion who's known to be experts at void warfare have from time to time called upon the aid of The Ark.

The Ark's Vault
Deep within the Ark is the Chapter’s personal storage of all relics, technology and other valuables. Appropriately named the Vault. Deep within it the faint glow of Skitarii eyes can be seen once you enter, awaiting to slay any intruders who make it passed the defense or those who wander too far from their guides. The Wardens are the guardians of this place, no one allowed to enter the vault without their permission. No one besides the Mechanicus or Chapter Council. Most relics of the Chapter are kept here while the Captains of the Chapter guard relics unique to their Formations. It’s believed that many of these relics are taken from Renegade Chapters.

Should any intruders reach the door they'd need to pass the squad of large Battle-Automata that stand at the entry. Wielding massive blades larger than even the Chapter's largest Astarte with a powerful Mauler pattern Bolt Cannon attached to their left shoulder. A shield attached to their left forearm capable of extended in size to properly protect the machine and any allies standing behind it. Instructed to guard the entrance to the Vault and kill any who are deemed a threat to the once Reclusiam and anyone inside.

Marines of the Chapter enter the Vault with a Mechanist escort once they achieve the rank of Sergeant, granted a helm from the very Vault itself.

The remains of their Dreadnoughts are kept here should they be damaged beyond repair, resting alongside those who still rest for the day where they're called to battle. It is not known how many heroes of the Imperium of man rest within these walls, what is known is that those who still simply rest for the next battle are the brightest stars of the Chapter. Ready to charge into battle once they're called upon.