It is stated that from 1924 up to the 1950s the institute was responsible for predicting tides for two-thirds of the world. After several changes of name and status the institute (having amalgamated with the Liverpool Observatory in 1929) is now the Proudman Oceanographic Laboratory (see external links below). Proudman used to say that his partnership with Doodson was so successful, because he liked to do the algebra while Doodson preferred the arithmetic, an understatement of their work which nevertheless indicated their complementary interests. In addition to his work in developing the departments of applied mathematics and oceanography, Proudman took a full part in University administration and acted as Pro-Vice-Chancellor during the war years 1940–46. Quoting the maxim that "the quickest way to get a lot of things done is to do one thing at a time" he was able to go straight to the heart of a problem, whether scientific or administrative, with an intuition which matched his intellectual ability. Personal life Proudman married Rubina Ormrod in 1916 and there were two sons and a daughter of their marriage (James, Nancy and Ian). After his first wife died in 1958, Proudman married Beryl Gould in 1961, who survived him. Proudman died on 26 June 1975. Awards Proudman was a well-known figure in international scientific circles and acted as Secretary of the International Association of Physical Oceanography (now the International Association for the Physical Sciences of the Oceans) for a number of years before becoming its president in 1951–54. His foreign distinctions included membership of the Norwegian Academy of Science and Letters, and the Alexander Agassiz Medal of the U.S. National Academy of Sciences. The Adams prize of the University of Cambridge was awarded to Proudman in 1923 for an essay on tides, which proved to be a remarkable seed-bed of ideas from which there developed a series of papers, many of them jointly with Doodson, of theoretical and practical importance. He was awarded the CBE in the 1952 Birthday Honours. After his retirement the University of Liverpool conferred on him the honorary LLD degree. He was a fellow of the Royal Society (elected 1925) which awarded him the Hughes Medal in 1957 and he served on many scientific and government committees. (Adapted from the Times obituary 3 July 1975 and the Biographical Memoirs of the Royal Society.) An amplification mechanism of meteotsunamis dilucidated by Proudman in 1929 is now