The Olympus-class battleship is the first Federation capital ship designed to use an onboard Aurora Unit. They are the flagships of the fleets they serve in, usually commanded by an officer of flag rank. Battleships of this class have smaller crews than most ships of a similar size due to the presence of the Aurora Unit. The space saved in crew support is used for more battle systems. The enormous vessels are powered by Fuel Gel, making the scarce commodity of extreme value to the Federation military.