Block Island’s year-round ferry service, operating three large, car-carrying vessels (for details on Interstate’s Hi-Speed ferries, see right). The ferries arrive in downtown Old Harbor after a 55-minute passage across Block Island Sound. Vehicle reservations should be made in advance. Passenger tickets may be purchased online or at the ticket window on the day of departure. Allow yourself enough time to park, purchase tickets and get on board. There are numerous daily departures during the summer season. Schedule and rates are subject to change. Fuel surcharge may apply.