Unidentified UNSC warship
From Halopedia, the Halo wiki
Three days following the ambush on the UNSC Infinity at Oth Lodon in Artesia-702 system, at least one vessel of this class of ship was used as part of a UNSC task force deployed to repair Infinity and monitor the Covenant space station at Oth Lodon recently captured by the UNSC from the New Colonial Alliance and Covenant mercenaries led by Captain Daniel Clayton and Vata 'Gajat.
The image of this ship featured in Halo: Escalation was originally a fan design, whom one such model was created by Benjamin Layne as a fan model for the canon Valiant-class super-heavy cruiser, whom a canon design for the Valiant-class would debut in Halo: Fleet Battles several years later.
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