Rose was made prize captain of two separate ships during the voyage; the Japanese mailship Hitachi Maru, and the coal freighter Igotz Mendi.
Eventually several Danish warships arrived and Rose attempted to pass the vessel off as a civilian German merchant ship.
However, the Danish sailors were not fooled and refused Rose's requests to be towed, despite his best efforts to maintain control of the situation and return to the ship back to Wilhelmshaven as a prize.
that Kaiser Wilhelm II would declare war on Denmark for the Danish government's refusal to turn Rose and his men over to the Reich.
After leaving the navy, became a merchant officer with the Hamburg America Line and served with them until he died.