Adrift on the water (2,3)
I believe the answer is:
at sea
I believe this clue is a double definition.
'adrift' is the first definition.
(thesaurus)
'on the water' is the second definition.
(Other definitions for at sea that I've seen before include "Confused, uncertain" , "Travelling" , "Lost or confused - on the briny?" , "of no fixed abode" , "cruising?" .)