This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
German Submarine U. SM of the german imperial navy original title In sicheren Gewssern Erfrischendes Morgenluftbad nach anstrengender Nachtfahrt In safe water Refreshing bath of air in the morning after exhausting nightcruise aus der kaiserlichen deutschen Marine OriginalBildunterschrift In sicheren Gewssern Erfrischendes Morgenluftbad