Hi my name is Peter I live in Centurion South Africa. About three years ago I build a 13 ft x5 ft 9in riveted aluminium airboat, Rotax 503 motor and 59 in x 34 in wood propeller.Over the time I made a lot of improvements by early 2010 it was good for 39 mph. on deep water. Now I am going to start on the next one, 13 ft x 7 ft and 18 to 35 hp motor, with scimitar type propeller for lower sound ? I hope.
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