Šepot Výmluvný otisk prstu u 97 Zhoubný nádor vyhnanství námořní míle
German Submarine UC-97 – Military History of the Upper Great Lakes
Das U-Boot in Farbe - The U-97 was a Type VIIC U-boat built of German Kriegsmarine during the Second World War. She was laid down at the Friedrich Krupp Germaniawerft in Kiel