The USS Orichalcum (NCC-91990) was a refit Oberth-class starship in operation in the 25th century. She was the USS Enterprise-G's "girlfriend", meaning that the ships were partners and often undertook missions together. The Orichalcum was equipped with state-of-the-art weaponry because of her refit. She carried quantum phasers and berillium torpedoes. (Star Trek: G)