Boats that use hydrofoil technology are also simply termed hydrofoils. They quickly replaced most hydrofoil and hovercraft services as well as many monohull ferries. Hydrofoil catamarans are also called foilcats. Trolleybuses, trams, ferries and hydrofoil services have operated in the past. From Naples, the ferry takes 80 minutes, and the hydrofoil 40 minutes. They had rides in the Forlanini hydrofoil boat over Lake Maggiore. This sailing hydrofoil stands as the most unusual of Hobie Cat's boats. Another use of foils is to provide lift, turning the boat into a hydrofoil. There is a traditional boat as well as several "fast cat" hydrofoil boats. This led him and Bell to the development of practical hydrofoil watercraft. Boeing launched its first passenger-carrying waterjet-propelled hydrofoil Boeing 929, in April 1974. Boeing launched its first passenger-carrying waterjet-propelled hydrofoil in April 1974. Its elongated paddle-like limbs functioned as a hydrofoil for maneuvering the animal. Soviet-built Voskhods are one of the most successful passenger hydrofoil designs. Similar, related sports are wakeboarding, kneeboarding, discing, tubing, and sit-down hydrofoil.