Yacht basin (6)
I believe the answer is:
marina
'yacht basin' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for marina that I've seen before include "Dock for yachts and cruisers" , "Place for mooring boats" , "place to moor up?" , "Yachting centre" , "Yacht station" .)