This one-shot comic focusing on pilot Hoban "Wash" Washburne was announced on March 9, 2010 and published on June 2, 2010. While guest starring on Whedon's television series Dollhouse, Patton Oswalt? requested permission to write a Serenity comic. One of several pitches made by Oswalt was accepted by Whedon, and Oswalt began to work on the script, with Whedon's input. Around the same time, illustrator Patric Reynolds? was finishing work on an Abe Sapien one-shot; he was encouraged to apply for the comic, and was accepted by Oswalt and Whedon. Oswalt's enthusiasm for the project and the lack of releases since Better Days led to the decision to use the comic to fill in a gap in the Buffy Season 8 release schedule. Jo Chen, who drew the cover for the Better Days trade paperback, returned for Float Out 's main cover art; the original of which was donated to the charity Can't Stop The Serenity for auction. An alternative cover was created by Frank Stockton. The story was later reprinted in August 2011 as part of the Better Days and Other Stories hardcover collection.
Following Wash's death, three former colleagues pool their resources to purchase a ship (a Firefly-class ship of a different model to Serenity), which they intend to name Jetwash in honor of their friend. At the floating out ceremony, they are initially unable to find the right words to christen the ship with, and instead tell each other stories about their interactions with the pilot. A common theme—that Wash would always look out for his friends—emerges, and the three men decided to use this sentiment to christen the ship. However, the traditional champagne bottle has been taken by Wash's wife, Zoe; she instead offers a bottle of cheap Asian liquor called un-ga-pae, which Wash was highly fond of. The final page reveals that Zoe is pregnant with Wash's daughter.