Moore began swimming with the Dunedin Swimming Club as a junior in the 1930s. In 1943, she won the South Island junior girls' diving title, and in 1945 she was runner-up in the nationalintermediate girls' diving championship. Moore won the New Zealand national women's diving championship in 1949, and then competed for New Zealand at the 1950 British Empire Games in Auckland. She finished eighth in the women's 3 m springboard. Subsequently, Moore won the New Zealand women's tower diving championship in 1952 and 1953.