The state of Blue Nile is home to the Roseires Dam, the main source of hydroelectric power in Sudan until the completion of the Merowe Dam in 2010. The following languages are spoken in Blue Nile state according to "Ethnologue". USS South Carolina (CGN-37)  USS "South Carolina" (CGN-37) was the second ship of the of nuclear-powered guided missile cruisers in the United States Navy. USS "South Carolina" and her sister ship, , were equipped with two Mk-13 launchers, fore and aft, for the RIM-24 Tartar surface-to-air missiles, ASROC missiles, and Harpoon missiles. They were equipped with two 5-inch rapid-fire cannons, fore and aft. Unlike the later which had a unique arrangement aft of the superstructure, with a flight deck and a below-decks hangar for two LAMPS helicopters, these two cruisers had only a landing pad aft and basic refuelling equipment. There was also a full suite of anti-submarine warfare equipment. Thus, these ships were designed to face all threats, in the air, on the surface, and underwater. "South Carolina" was sometimes referred to by her crewmembers as "The Socar" or "The Mighty Socar". "South Carolina" was launched on 1 July 1972 and commissioned as DLGN-37 on 25 January 1975. She was redesignated CGN-37 six months later in the Navy's major type realignment of 30 June 1975. "South Carolina" was built at Newport News Shipbuilding Co., Newport News, Virginia. The cruiser's first North Atlantic deployment was to the Battle Group. After "South Carolina" participated in Exercise Solid Shield in the Caribbean and completed her first Mediterranean deployment in February 1977. "South Carolina" in company with her sister ship, , and the aircraft carrier commenced a second Mediterranean deployment in November 1977 and returned to Norfolk, Virginia in July 1978. "South Carolina" deployed again to the Mediterranean in January 1979 with the Battle Group. In 1980, "South Carolina" deployed as part of the first Atlantic battle group to spend an entire deployment in the Indian Ocean. After a cruise to the Virgin Islands in November 1981, she was deployed in January 1982 for a six-month deployment with the carrier . In 1985, "South Carolina" began a new year by conducting preparatory exercises in the Caribbean. It was deployed to the Mediterranean in March and completed the deployment seven months and 46,500 miles later.