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SUBSCRIBE: https://www.youtube.com/c/ngcpl?sub_c... The history of underwater battles during World War II. We will learn about the strategies and actions of the largest ships. The program will also reconstruct the most important battles. Broadcast dates and reruns can be found at https://www.natgeotv.com/pl If you prefer to watch episodes online, visit ncplusgo.pl or player.pl. Join us on Facebook: / ngcpl Watch Nat Geo Wild Instagram: / natgeowildpolska E01