Realities Of War At Sea WWI Realities De La Guerre Sur MerOriginal antique World War One poster The Realities of War at Sea Les Realites de la Guerre Sur Mer depicting images of military ships and submarines with a maritime map of the war Carte Maritime de la Guerre marking the Baltic Sea and Black Sea used by the Central Powers and seas used by the other Allied navy ships, captions on the images showing and describing the: naval tonnage of the Central Powers and Allies Tonnage des Puissances Centrale