CNN 's MainSail host Shirley Robertson is a double Olympic gold medalist . Robertson has never climbed a big mast before this . On this month 's MainSail programme , Shirley reaches the top of the tallest aluminium mast in the world - aboard the 56 meter Perini Navi vessel , Salute . Comment:
CNN 's MainSail host Shirley Robertson is a double Olympic gold medalist . Robertson has never climbed a big mast before this . Comment: