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
Coolidge Homestead House in 1924 have been restored and a video of contemporary newsreel film added. It is located west and north of Vermont Route 100A in Plymouth Notch, and open daily from 9:30 A.M. to 5:00 P.M, late May to mid-October. Four generations of the family, including the President, are buried in nearby Plymouth Notch Cemetery. The Calvin Coolidge State Park, a developed part of the Coolidge State Forest, is also close by. Coolidge Homestead The Coolidge Homestead, also known as Calvin Coolidge Homestead District or President Calvin Coolidge State Historical Site, was the childhood home of the 30th President of