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
Delaware River Iron Ship Building and Engine Works being not only America's first turbine-powered vessel, but also of eventually becoming the world's first helicopter carrier. The ship had a top speed of . The 3,750-ton sister ships "Yale" and "Harvard"—built in 1907 for the Metropolitan Steamship Company, which operated them between New York and Boston—had a top speed of and when first entering service were the fastest American-flagged vessels afloat. After the death of John Baker Roach in 1908, the Roach family heirs decided not to continue the business. The shipyard lay idle for some years until being leased in about 1913 by an engineer and former naval