Passage: Kriegsmarine Commander of Submarines (Befehlshaber der U-Boote) Karl Dönitz akafunga zano rekurwisa Scapa Flow nechikepe mukati memazuva ekutanga kwehondo. Chinangwa chayo chaizove kaviri: chekutanga, kuti kudzinga Home Fleet kubva kuScapa Flow kwaizodzikisa maBritish North Sea blockade uye kupa Germany rusununguko rukuru rwekurwisa maAtlantic convoys; chechipiri, kurova kwacho kwaizove chiito chekutsiva, kurova panzvimbo imwecheteyo uko maGerman High Seas Fleet akazvipa uye akazvinyudza mushure mekukundwa kweGerman muHondo Yenyika Yekutanga. Dönitz akasarudzwa nemaoko Kapitän Günther Prien, akaronga kurwisa husiku hwa13/14 Gumiguru 1939, apo mafashama aizove mwedzi uye husiku husiku. Dönitz akaonekwa aine musoro wakananga wakananga kubva kuScapa Flow achidzikisira kurwisa mabhureki madiki eU-47 uye akatungamira nzira yekudziviriro yekudzivirira yakakurumidza kuburitswa neSkylight uye
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