From the Beverello dock of Naples at the Piazza Municipio ferries and hydrofoils can be taken to Sorrento.
The trip lasts about 45 minutes, and is quite comfortable, but it costs almost twice as much as going by train.
They dock at the port of Sorrento, which is about 500 meters from the center. Shuttles are available from the main square. It is also easy to reach the islands of Capri and Ischia from Sorrento, thanks to the streamlined maritime transportation network that has frequent departures by hydrofoil and ferries.