In 1602, during the "Long War", he led a successful operation which resulted in a large number of Ottoman prisoners and the liberation of Christian captives. Following this action, he was appointed admiral of the fleet in 1603 by Ferdinando I de' Medici, Grand Duke of Tuscany. For the coming decade, the Tuscan fleet (under Inghirami) engaged Ottoman shipping and Berber pirates in the Mediterranean, with several successes – including the taking in 1607 of Bona (Annaba) in modern-day Algeria. As admiral, Inghirami also liaised with the Catholic allies of the Grand Duchy in the Mediterranean (including representatives of the fleets of France and later Spain), and also with the Medici family's North African allies. (Including emir Fakhr-al-Din II, whom Inghirmani carried to Messina during the emir's exile from Lebanon).