D.P. = Displaced Person.

Question, Why is it so odd that there was a German Destroyer in the middle of the Atlantic?

In fact, there is nothing odd about that. Now what would have been odd to see would have been a German Battleship in the middle of the Atlantic at that stage of the war.

Just because the Battleships basically stopped operations didnt mean the rest of the Kriegsmarine surface navy did. In fact, the German Destroyers were in operation all over the ocean even untill the end or after the ending of hostilities. True, they were mostly employed as evacuation ships--like at Riga, but they also had many other missions.

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Lost are only those, who abandon themselves) Hans-Ulrich Rudel.