Production of stationary "paraffin" engines began in 1890. Then, in 1898, a year after introducing it to the world, B&W director Ivar Knudsen (1861–1920) negotiated with Rudolf Diesel exclusive Danish manufacturing rights for the diesel engine. A test engine was built that same year. The 1903-1904 year saw delivery of their first diesel engine to the N. Larsen Carriage Factory. 1911-1912 saw the world's first ever ocean-going diesel-powered ship, M/S Selandia, start her maiden voyage from Copenhagen to Bangkok with two B&W four-stroke main engines (furnishing a total of 2,500 hp).