floatable

adj

1. That may be floated.
2. That may be floated upon.

   “The river is floatable on a raft.”

noun

1. (plural-normally)Anything that floats.

   “The sixth minimum control is intended to reduce, if not eliminate, visible floatables and solids using relatively simple measures. Simple devices including baffles, screens, and racks can be used to remove coarse solids and floatables […]”