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Paul König, naval officer and captain of North German Lloyd, describes the voyage of the first merchant submarine U 155 ( Deutschland ). In 1916, the submarine managed to circumscribe the British naval blockade and to return from the United States without harm.
"The mysterious voyage of the merchant submarine Deutschland has now kept the attention of the old and new world under strain quite long enough. The wildest rumors regarding our trip and our fate have cropped up in innumerable papers, not to mention the magnificent flights of fiction made by the English. I therefore have the greater pleasure in giving a longer, more detailed description of our legendary voyage and our adventures."
Reprint of the original edition from 1916.

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