Draws boats (4)
I believe the answer is:
tugs
This clue is a double definition.
'draws' is the first definition.
(tugging is a kind of drawing)
'boats' is the second definition.
(tug is a kind of boat)
(Other definitions for tugs that I've seen before include "Pulls hard" , "Pulls in a jerking manner" , "Yanks" , "Tows" .)