Chants may confuse sailor (9)
I believe the answer is:
yachtsman
'sailor' is the definition.
(I know that sailor can be written as yachtsman)
'chants may confuse' is the wordplay.
'confuse' indicates an anagram.
'chants'+'may'='chantsmay'
'chantsmay' is an anagram of 'YACHTSMAN'.
(Other definitions for yachtsman that I've seen before include "Description of Chichester" , "Pleasure sailor" , "crafty person" , "Ainslie, for example" , "sportsperson involved with rigging?" .)