Edmund Kalfus was a leading American tethered hydro racer with several World records to his name during the 30s, 40s and 50s. He is also credited with the first ever 100mph run with a tethered hydro at Passippany, New Jersey. This was not achieved in the UK for another twenty plus years. Kalfus built his own engines and boats that were loosely based on the British Little Star multistep design, but as can be seen, they were very bulbous and top heavy with a third line attached to the motor so that the boats ran with a significant cant.  Ed was probably unique in the hydro world for flying to meetings in his own aeroplane. This boat is from the late 1940s holding the 30cc record at 80.36mph. Details and photo thanks to Peter Hill

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