UNSC Leviathan
From Halopedia, the Halo wiki
The UNSC Leviathan is a United Nations Space Command Marathon-class Cruiser-Carrier commanded by Admiral Micheal Stanforth. It has seen many engagements including the battle of Sigma Octanus IV, and was present during the Fall of Reach.
The Leviathan was one of the some 20 Marathon-class cruisers, sporting several MAC guns.
