Hi Jankowski,
Here some historical facts:
1916: The battle of Juetland between England and Germany was a draw!
But the Chef of the Fleet, Adm Scheer recognized, that Germany whould never have a surface-battle against the Britains again. The Royal Navy blocked the North-Sea to avoid, that food and raw-materials from the neutral USA arrive Germany.
The Chef of Krupp-Enterprises, Mr. von Bohlen and Halbach decide to build a merchant-submarine to fetch Material, like Bauxit, from USA for continuing production of nessesary war-materials. The blockade runner "Deutschland" was born and build.
1917: Adm. Scheer decide to unconditional submarine warfare against England. The USA declared Germany the war. the U-Deutschland was refit to the SM-U511.
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