Vagrant — fishing boat (7)
I believe the answer is:
drifter
This clue is a double definition.
'vagrant' is the first definition.
(I know that vagrant can be written as drifter)
'fishing boat' is the second definition.
(I know that drifter is a type of fishing boat)
(Other definitions for drifter that I've seen before include "tramp, perhaps" , "one unsettled" , "Fishing boat; wanderer" , "Bum" , "Fishing boat; hobo" .)