Stan Sayres and Elmer Leninschmidt, piloting Slo-mo-shun IV, July 7, 1952, to a new Worlds Water Speed Record, at Seattle Washington.

Slo-mo-shun IV, at speed on Lake Washington, July 7, 1952.
The last propeller driven water-craft to hold the absolute Water Speed Record.

World Water Speed Records

Donald Campbell with the Bluebird K7, circa 1958

Jet-Speed Boat Records