Either vehicles or pedestrians can take a ferry boat to different ports on the Island of Ischia.
They leave from Naples, Sorrento, Amalfi/Positano and Capri, arriving at three different ports in Ischia.
There is snack bar service, seating and restrooms on board. The cruise across the sea to Ischia is about an hour and a half by ferry and one hour by hydrofoil and the view is great!
Check direct with the ferry companies for up to date times and prices.