The Nazi starship was a type of space vehicle employed in an alternate timeline by the Nazis of Earth. This starship was a representative of the Erdenreich government's primary military force in space, the Raumwaffe. The rise of Nazi spaceflight was directly attributable to the United States of America's 20th century failure to declare war against the German nation-state due to the influence of isolationist activism, led by the likes of Edith Keeler.
These starships were instrumental in allowing the Nazis to spread across many sectors of the Alpha and Beta Quadrants. (Last Unicorn RPG module: All Our Yesterdays: The Time Travel Sourcebook; TOS episode: "The City on the Edge of Forever")