New Nautilus is one of Atlantis' most powerful warships, it's been reactivated after 12,000 years by Nemo's crew after the demise of Nautilus in episodes 21 and 22. New Nautilus' Orpheus engine draws power from aberrations in the gravitational field of two black holes orbiting one around the other. The ship has other weapon systems which were damaged in previous battles, and cannot be repaired. Its true name, Excelion, is also the name of one of the most powerful ships in Gunbuster.)