More than a year after the newly re-designated SDF-1 Macross restoration project commenced, construction began on a second super dimension fortress in November 2003. Designated simply SDF-2, this second Macross Class vessel of Earth origin was designed with an almost identical hull configuration to the SDF-1 currently being rebuilt, but the vessel was notably larger. SDF-2 was significantly altered into that of a massive colonization ship, Megaroad-01.