SCA owns the Suez Canal and all areas, buildings and equipment pertaining thereto. It issues the Rules of Navigation, specifies the tolls for the use of the canal and collects them. The tolls are expressed in
XDR and collected in
USD,
GBP,
EUR and other currencies. In 2008, the toll revenue was 5.381 billion USD for the passage of 21,415 vessels, resulting in an average toll of 251, 314.5 USD per vessel. SCA is responsible for the operation and maintenance of the Suez Canal, for the safety of the traffic and for all other matters relating thereto. According to the nationalisation act, SCA is bound by the 1888
Convention of Constantinople, which grants the right of free access and use of the canal at equal conditions to all ships, commercial ships and ships of war, in times of peace or of war, even to ships of belligerent parties. SCA is responsible for the computerized traffic management supported by radar, for the 14
pilot stations and their pilots. Since 1996, SCA operates the
Maritime Training and Simulation Center for its pilots. SCA operates some 60 ships and boats, such as
tugs,
dredgers,
cranes, and smaller boats. Its facilities include 114 ferry connections with 36 ferry boats; the
Ahmed Hamdi road tunnel; the Nile Shipyard; the roads alongside the canal; a silk production in a farm at Serabium using treated sanitary waste water for irrigation; water plants in the canal cities; 12,000 housing units; a hospital in Ismailia and emergency hospitals at both ends of the canal; and four schools and various sports and recreational centers. == Revenues ==