Yes this is from Renatos final F1-V8 race 1985. He left the F1-V8 series for Offshore racing 1986.
Bertil Wik in the #12 Hodges/Evinrude V8, next boat is #2 Arthur Mostert in his Velden racing/Johnson V8 and Renato in his #18 Molinari/Dole/Evinrude V8.
Not sure about the Nordica boat. Barrie Woods or Kicco Vidoli is my best guess. This is from Idroscalo, Milano.
Thanks Oliver Keuth for a very good picture.