Above all Fioravanzo was responsible for the Navy Department of Special Studies: the actual "study office" of the then Regia Marina. As such Fioravanzo studied most projects of Navy "special operations" and the related deployment of forces. He was the one who, well before the war, devised the first draft of the plan for the forthcoming invasion of Malta, dubbed "Operation C3". The Department of Special Studies was concerned not only in projects, but also in the rewriting of tactical regulations, of operational statistics, of the writing of articles for magazines and newsletters, and of propaganda (via radio also).