Flag semaphore on deck of a German torpedo boat; 1940s...

Sailor signals

German "Kriegsmarine" Captain Friedrich Karl Topp inspects sailors aboard the battleship “Tirpitz” (1941)

Inspection when snowing

German submarine (U-boat) U-107 at sea, at the side a life boat with survivors coming close (surviving sailors of a sunken ship?).
U-107 was a Type IXB U-boat of Nazi Germany's Kriegsmarine that operated during World War II. Between January 1941 and August 1944, she sank 39 Allied ships, in addition to damaging another four ships.