Being organised, foil tall ships (8)
I believe the answer is:
flotilla
'ships' is the definition.
(thesaurus)
'being organised foil tall' is the wordplay.
'being organised' indicates anagramming the letters.
'foil'+'tall'='foiltall'
'foiltall' anagrammed gives 'FLOTILLA'.
(Other definitions for flotilla that I've seen before include "Fleet of small ships" , "set of vessels" , "set of boats" , "number of vessels" , "Fleet of small vessels" .)