The Cosmo Sloop was a limited-run luxury leisure spacecraft manufactured by Casse Aerospace. Launched in SEY 2604, it was the company's debut ship, personally designed by founder and lead engineer Leonard Casse. Its controls were set up with ease-of-use in mind, so that even newly-minted pilots could fly it without facing a high learning curve. Additionally, the hull featured the open circle signet and curved wings that became a hallmark of Casse's future designs, and later, those of Anvil Aerospace. The Cosmo Sloop was retired the same year it debuted after a period of poor sales partially caused by the then-ongoing Second Tevarin War.