Occupy harbour (9)
I believe the answer is:
entertain
I believe this is a double definition.
'occupy' is the first definition.
(thesaurus)
'harbour' is the second definition.
(synonyms)
(Other definitions for entertain that I've seen before include "Amuse, divert" , "Please < flirt with" , "Amuse; host" , "consider" , "Wine and dine" .)