Over the course of the 11th and particularly the 12th centuries, Genoa became the dominant naval force in the Western Mediterranean, as its erstwhile rivals Pisa and Amalfi declined in importance.
11. ja eriti 12. sajandi jooksul muutus Genova domineerivaks merejõuks Vahemere lääneosas, kui tema kunagised rivaalid Pisa ja Amalfi tähtsust kaotasid.