Yacht clubs located in American islands (9)
I believe the answer is:
catamaran
'yacht' is the definition.
(thesaurus)
'clubs located in american islands' is the wordplay.
'clubs' becomes 'c' (abbreviation used in card games such as bridge).
'located in' becomes 'at' (I am not sure about this - if you are sure you should believe this answer much more).
'american' becomes 'am' (abbreviation in some contexts).
'islands' becomes 'aran' (I have seen 'Irish islands' mean 'aran' so perhaps 'islands' could also mean 'aran').
'c'+'at'+'am'+'aran'='CATAMARAN'
Can you help me to learn more?
(Other definitions for catamaran that I've seen before include "Vessel with twin hulls" , "Boat with two hulls" , "Twin-hulled craft" , "One vessel" , "Sailing vessel" .)