Parsons Marine Steam Turbine Company company. In 1944, Parsons was one of 19 companies which formed the 'Parsons and Marine Engineering Turbine Research and Development Association', usually known as Pametrada. The last ship to use a Parsons propulsion system was launched in 1964. The company was absorbed into C. A. Parsons and Company and survives in the Heaton area of Newcastle as part of Siemens, a German industrial conglomerate. Parsons Marine Steam Turbine Company Parsons Marine Steam Turbine Company was a British engineering company based in Wallsend, North East England, on the River Tyne. The company was founded by Charles Algernon Parsons in 1897 with
Pennsylvania-class steamship Pennsylvania-class steamship The "Pennsylvania" class steamships—"Pennsylvania", "Ohio", "Indiana" and "Illinois"—were a class of four cargo-passenger liners built by the Philadelphian shipbuilder William Cramp & Sons in 1872–73. Intended for the newly established American Line, the four ships were at the time the largest iron ships yet built in the United States, and were launched with considerable fanfare. Upon entering service in 1874, they also became the first American-built steamships to challenge British dominance of the transatlantic trade since the American Civil War. Although soon outclassed by newer and larger vessels, all four of the "Pennsylvania" class steamships were to enjoy