The Supertest Petroleum Company was a Canadian gas company from 1923-1971. From 1951-1961, they were involved in unlimited hydroplane racing, being the only Canadian boat competing against the best from the United States. In this 20 page magazine, photos show the history of the three Miss Supertest boats; and how they came to dominate international boat racing, winning the Harmsworth Trophy in 1959, 1960, and 1961