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
Calvin Coolidge held their convention the next month in New York City. The convention soon deadlocked, and after 103 ballots, the delegates finally agreed on a compromise candidate, John W. Davis, with Charles W. Bryan nominated for vice president. The Democrats' hopes were buoyed when Robert M. La Follette Sr., a Republican senator from Wisconsin, split from the GOP to form a new Progressive Party. Many believed that the split in the Republican party, like the one in 1912, would allow a Democrat to win the presidency. After the conventions and the death of his younger son Calvin, Coolidge became withdrawn; he