Sailing photographer John Evans pioneered innovative masthead genre . Climbs 100 meter masts in hundreds of breathtaking photographs . Also took stunning underwater photographs of massive sailing yachts . To this day I always carry a knife with me . '' New book chronicles influential 20 year career , including some close calls .
Sailing photographer John Evans pioneered innovative masthead genre . Climbs 100 meter masts in hundreds of breathtaking photographs . Also took stunning underwater photographs of massive sailing yachts . New book chronicles influential 20 year career , including some close calls .