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
Grace Coolidge Grace Coolidge Grace Anna Goodhue Coolidge (January 3, 1879 – July 8, 1957) was the wife of the 30th President of the United States, Calvin Coolidge. She was the First Lady of the United States from 1923 to 1929 and the Second Lady of the United States from 1921 to 1923. She graduated from the University of Vermont in 1902 with a bachelor of arts degree in teaching and joined the Clarke Schools for Hearing and Speech in Northampton, Massachusetts to teach deaf children to communicate by lip reading, rather than by signing. She met Calvin Coolidge in 1904, and