 In 846 the Duchy of Naples, in alliance with maritime powers of Gaeta, Amalfi and Sorrento, defeated a Saracen fleet near Licosa.Before the battle, the alliance had already recaptured Ponza which had fallen into the possession of the Saracens earlier that year.Three years later, the same coalition of maritime cities, supported by the Papal States, defeated another Arabic fleet near the recently refortified Ostia.