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 .
Sailing photographer Kos Evans pioneers innovative masthead genre . Climbs 10 meter masts in pursuit of breathtaking photographs . Also took stunning underwater shots of massive racing yachts . New book chronicles influential 30 year career , including some close calls .