Sailor's shanty with almost camp rendition (9)
I believe the answer is:
yachtsman
'sailor's' is the definition.
(yachtsman is a kind of sailor)
'shanty with almost camp rendition' is the wordplay.
'with' says to put letters next to each other.
'almost' means to remove the last letter (most of the word but not all of it).
'rendition' indicates anagramming the letters.
'camp' with its final letter taken off is 'cam'.
'shanty'+'cam'='shantycam'
'shantycam' anagrammed gives 'YACHTSMAN'.
(Other definitions for yachtsman that I've seen before include "Ainslie, for example" , "Male sailor" , "I may go round the world" , "(Recreational) sailor" , "Description of Chichester" .)