Otto Hahn in an obituary: Hahn's death did not stop his public acclamation. Proposals were made at different times, first in 1971 by American chemists, that the newly synthesized element no. 105 should be named hahnium in Hahn's honor; in 1997 the IUPAC (International Union of Pure and Applied Chemistry) named it dubnium, after the Russian research center in Dubna (see element naming controversy). Although element 108 was given the name hassium (after Hesse) by its officially recognized German discoverers in 1992, a 1994 IUPAC committee recommended that it be named hahnium (Hn), in spite of the long-standing convention to give the
Otto Hahn (ship) Hahn, the German chemist and Nobel prize winner, who discovered the nuclear fission of uranium in 1938. The first captain of the "Otto Hahn" was Heinrich Lehmann-Willenbrock, a German U-boat ace of World War II. In 1968, the ship's 38-megawatt nuclear reactor was taken critical and sea trials began. In October of that year, NS "Otto Hahn" was certified for commercial freight transport and research. Configured to carry passengers and ore, "Otto Hahn" made her first port call in Safi, Morocco, loading a cargo of phosphate ores, in 1970. In 1972, after four years of operation, her reactor was refuelled.