Miss Supertest III was a
Canadian-designed and built hydroplane that won the 1959 Detroit
Memorial Regatta and the 1959, 1960 and 1961 Harmsworth Cup
races -- the only four races it ever entered. It was the only
three-time Harmsworth Cup winner and the first non-U.S. winner
in 39 years.
Racing out of Sarnia, Ontario, Miss Supertest III was owned by
J. Gordon Thompson, owner of Supertest Petroleum (later acquired
by BP). The team was managed by his son, Jim Thompson, and the
boat piloted by Bob Hayward. Miss Supertest III was inducted
into Canada's Sports Hall of Fame.
Its predecessor, Miss Supertest II was briefly the fastest
propeller-driven motorboat in the world, setting a water speed
record of 296.96 km/h (184.494 mph) on November 1, 1957, at
Picton, Ontario with Art Asbury at the wheel. It broke a record
that had stood for five years, but a new record was set only a
few weeks later.
The first Miss Supertest was originally known as Miss Canada IV
and competed in hydroplane races from 1949 to the mid-1950s.
The Miss Supertest boats were retired following the death of Bob
Hayward. He was killed while racing Miss Supertest II about a
month after winning the 1961 Harmsworth Cup with Miss Supertest
Canada Post issued a commemorative stamp in 2011 honouring the
hydroplane racingboat Miss Supertest III, her driver Bob Hayward
and businessman Jim Thompson, who designed and built her.