Tyrrhenian Sea Ferry Route Map Ferry routes » Tyrrhenian Sea This map shows ferry routes across the Tyrrhenian Sea, linking mainland Italy with islands such as Sicily and Sardinia. Busy crossings include Naples to Palermo, and Rome to Cagliari, operated by Tirrenia and Grimaldi Lines. Was this map helpful?5 - Yes4 - Mostly3 - Partly2 - Barely1 - NoNo ratings yetAnything you would like to tell us? (optional)WebsiteSendDone About ferryroutes↓