They won't have soap 900 years in the future, you don't need one - Sonic-Showers use hyper-vibronic waves to dislodge dirt from you, your clothes etc so you never even have to remove your cloathes to stay clean and you won't need to use laundry either. Washing machines are a thing of the past too. Sonic-showers are built into the wall panels as a matter of course, even in places like cities. It's a public service... They don't have them on most of Hurston because they be cheap-ass.
Drake ships don't have Hyper-Vibronics Sonic-Showers in the wall panels either, because cheap ass. They have a bucket, which doubles up as the toilet facilities.