Coniston Water per hour () in "Blue Bird K4". Between 1956 and 1959 Sir Malcolm's son Donald Campbell set four successive records on the lake in "Bluebird K7", a hydroplane. In 1966 Donald Campbell decided that he needed to exceed 300 miles per hour (483 km/h) in order to retain the record. On 4 January 1967, he achieved a top speed of over 320 miles per hour () in "Bluebird K7" on the return leg of a record-breaking attempt. He then lost control of "Bluebird", which somersaulted and crashed, sinking rapidly. Campbell was killed instantly on impact when decapitated by the K7's
P. H. Welshimer P. H. Welshimer Pearl Howard "P. H." Welshimer (April 6, 1873 – August 16, 1957) was an American Christian minister and author from Canton, Ohio and well-known leader in the Restoration Movement. Pearl Welshimer was born to Samuel and Louisa Jane Wilson Welshimer at Union Center, Union County, Ohio, on April 6, 1873. As a boy he selected for himself the middle name “Howard.” In his adult years he was most often known simply as “P.H.” Welshimer graduated from Ohio Northern University at Ada in 1894. In his final year of school there, university president Henry Lehr pulled Welshimer aside