The Gais-class is a new class of battle-cruisers, which has been intruduced to service only recently. These ships were developed shortly before the conflcit with the UNSC started and only a single prototype was build until the Battle of Rust. Afterwards the Federation invested trillions to build more of these ships, giving the until then outdated Federation fleet a new and mighty battleship. In difference to older designs, the Gaia-class can not transport troops and has only small docking bays.