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Aboard the German cruiser Karlsruhe, 1930. Karlsruhe was a light cruiser, the second member of the Königsberg class, and was operated between 1929 and April 1940, including service in World War II. She was operated by two German navies, the Reichsmarine and the Kriegsmarine. “In May 1930, she departed on her first overseas training cruise, to Africa and South America.” [Could this be of a tour of the ship, and not on a cruise?]