Commander Michael Rudat of the submarine U 36 of the German Navy (Bundesmarine) with his children Charlotte (L) and Henrieke (R) after coming to its home port of Eckernfoerde, northern Germany from the Joint Warrior military exercise and different joint operations with the Norwegian Navy, 7 June 2019.
After five month and almost 8.800 miles the submarine, powered by hydrogen fuel cell, completed its mission.
Photo: EPA-EFE/DAVID HECKER
