Adrift (6)
I believe the answer is:
afloat
'adrift' is the definition.
(I know that adrift can be written as afloat)
This is all the clue.
(Other definitions for afloat that I've seen before include "Resting on water" , "Aboard ship" , "At sea - in circulation" , "Bobbing along?" , "With one's head above water" .)