My saucy hot evening on the sloop (5)
I believe the answer is:
yacht
'the sloop' is the definition.
(thesaurus)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for yacht that I've seen before include "Type of boat" , "Sailboat" , "Light sailing vessel" , "Sailing-boat" , "Fast sailing vessel" .)