Hidden within London's National Maritime Museum is a treasure trove of hundreds of vintage sea flags. We unravel their secret meaning.
원문출처 : http://edition.cnn.com/2016/04/25/sport/gallery/sea-flags-maritime-museum-london/index.html?eref=edition
원문출처 : http://edition.cnn.com/2016/04/25/sport/gallery/sea-flags-maritime-museum-london/index.html?eref=edition