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
M. H. Panhwar M. H. Panhwar Muhammad Hussain Panhwar(Sindhi محمد حسين پنهور ) popularly known as M.H. Panhwar was born on 25 December 1925 in village Ibrahim Panhwar district Dadu Sindh. Professionally he specialized in ground water development, earth moving, agricultural machinery, water logging, salinity control drainage and agriculture. He worked with government of Sindh and West Pakistan as Agriculture Engineer for 12 years.From 1970 onwards till 2007 he ran a consulting company specializing in irrigation, water logging, drainage, agriculture, scientific equipment and horticulture. He had written 10 books on ground water in Sindh and many articles on Thar and Kohistan deserts of