The BC-304, also known as the Daedalus-class warship, is a class of deep space carrier built by the Tau'ri, and the most advanced series of vessels in the Tau'ri fleet capable of rivaling even the most powerful alien spaceships in Eur'uui and the Star Destroyers. As of 2009, six Daedalus-class warships have been built. These 304s are the Daedalus, Odyssey, Korolev, Apollo, Sun Tzu, and George Hammond. They were used by the Alliance of Nations
Although referred to as "sister ships" to the BC-303 Prometheus, the 304s differ significantly in their design and technology. While the Prometheus was originally built with reverse-engineered Goa'uld technology and salvaged equipment such as the Transportation rings, the 304s incorporated Asgard technology in their original design. All 304 class ships are equipped with Asgard shields, sensors and transporters, as well as intergalactic hyperdrive technology that allow the ships to carry supplies to Atlantis in the Pegasus galaxy.