A British windsurfer has broken the world speed record for the SECOND time - reaching 54mph. <br /><br />Zara Davis, 51, flew down a 500-metre canal to claim back her record with an amazing speed of 46.49 knots - faster than most speed boats. <br /><br />She spent six weeks in a remote area of Luderitz, Namibia in Western Africa, waiting for the perfect wind conditions.
