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 (given name) Calvin (given name) Calvin is a masculine given name. It has been especially popular among American Protestants, who may be baptized as John Calvin to honor the religious leader, although in the judgement of the Oxford Dictionary of First Names, the modern given name "owes its popularity as much to the New York fashion designer Calvin Klein [b. 1942] as to the theologian". In the United States, the name had a short burst of popularity in the mid-to-late 1920s, due to president Calvin Coolidge (in office 1923–1929) and has remained of limited but more or less constant popularity since (fluctuating