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
John Calvin Coolidge Sr. John Calvin Coolidge Sr. John Calvin Coolidge Sr. (March 31, 1845 – March 18, 1926) was an American politician and businessman from Vermont, and the father of John Calvin Coolidge Jr., the 30th President of the United States. He administered the presidential oath of office to his son at their family homestead on the early morning of August 3, 1923, following the death of President Warren G. Harding. Born in Plymouth, Vermont, John C. Coolidge was a farmer and store owner, and worked at a variety of other occupations, including banker and insurance broker. In addition, he was a veteran