Florence May Chadwick (born 9 November 1918 in San Diego, California – 15 March 1995) was an American open water swimmer who inducted in the International Marathon Swimming Hall of Fame in 1966 as an Honor Swimmer . She was similarly honored by the International Swimming Hall of Fame in 1970 as an Honor Swimmer . She also made contributions to various youth groups. Chadwick was a typist and swimming coach from California, U.S.A.