Flavio Gioja. From Wikipedia, the free encyclopedia. Jump to: navigation, search. Flavio Gioja or Gioia (fl. 1302) was an Italian mariner and inventor. ...
FlavioGioja or Gioia (fl. 1302) was an Italian mariner and inventor. Allegedly born in Amalfi (his birthplace is sometimes given as Positano or Naples), Gioia was a marine pilot who has been credited with perfecting the sailor's compass by suspending its needle over a fleur-de-lis design, which pointed north.
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