Gold on a new vessel (7)
I believe the answer is:
gondola
'vessel' is the definition.
(I know that gondola is a type of boat)
'gold on a new' is the wordplay.
'new' is an anagram indicator.
'gold'+'on'+'a'='goldona'
'goldona' is an anagram of 'GONDOLA'.
(Other definitions for gondola that I've seen before include "Traditional rowboat of Venice" , "Compartment suspended from an airship" , "It's traditionally used on the canals of Venice" , "Venetian taxi" , "Palmieris' craft" .)