Yacht harbour (6)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
marina
'yacht harbour' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for marina that I've seen before include "Yacht station" , "Yachting centre" , "part of harbour?" , "Place for mooring boats" , "Yacht harbour" .)