SS President Coolidge Newport News, Virginia built the two ships, completing "President Hoover" in 1930. The keel for "President Coolidge" was laid 22 April 1930 and the ship was delivered 1 October 1931. They were the largest merchant ships built in the United States up to that time. Each ship had turbo-electric transmission, with a pair of steam turbo generators generating current that powered propulsion motors on the propeller shafts. Westinghouse built the turbo generators and propulsion motors for "President Coolidge" but General Electric built the turbo generators and propulsion motors for "President Hoover". In the "President Coolidge" twelve Babcock & Wilcox superheater
Presidency of Calvin Coolidge by Southern Democrats. Coolidge did not emphasize the appointment of African-Americans to federal positions, and he did not appoint any prominent blacks during his tenure as president. On June 2, 1924, Coolidge signed the Indian Citizenship Act, which granted U.S. citizenship to all American Indians, while permitting them to retain tribal land and cultural rights. By that time, two-thirds of Native Americans were already citizens, having gained citizenship through marriage, military service, or the land allotments that had earlier taken place. The act was unclear on whether the federal government or the tribal leaders retained tribal sovereignty. Coolidge also appointed