CSO-class supercarrier

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Best characterised as being the larger cousin of the infamous, the CSO-class supercarrier, sometimes dubbed the Covenant Mothership, is the largest model of capital ships  utilised by the  before, during and after the.

Cauteriser-pattern
Built to the standards of the Medural-pattern assault carrier  by the, the Cauteriser-pattern supercarrier was built over several decades using smuggled Covenant technology to produce a CSO-like ship. It is a more rugged ship, focusing on heavy armor and firepower over mobility. The Cauteriser has much of the same weapons as the Nuvaar, but is significantly weaker.

Endarvon-pattern
Utilised almost exclusively by the First Fleet of Gallant Ingenuity, the Endarvon-pattern supercarrier is the successor of the fleet's previous Nuvaar-pattern in an effort to standardise all heavy capital ships within the Covenant remnant. Like all First Fleet ships these ships have multiple redundent systems in place to prevent electromagnetic attacks from affecting them, albeit disabled for only a few minutes. Among other improvements are improved impulse engine drive systems and improved nanolaminate armor, making them faster and stronger than the Nuvaar-pattern.

Endarvon-pattern supercarriers are also more automated, requiring only a tenth of the crew of a Nuvaar to operate effectively.

Nuvaar-pattern
The Nuvaar-pattern supercarrier is a mutaion of the basic Kerel-pattern assault carrier and is also the most common and oldest variant of supercarrier, introduced in when the  lead ship  of the CSO-class, the  Enduring Tempest , was released from its assembly forge. Nuvaar is believed that the resources alone for each carrier could have been used for at least a dozen assault carriers, making these the most expensive ships in the Covenant Empire.