Passage: Kriegsmarine Commander of Submarines (Befehlshaber der U-Boote) Karl Dönitz chepụtara atụmatụ ịwakpo Scapa Flow site n'ụgbọ mmiri n'ime ụbọchị ole na ole nke agha ahụ. Ebumnuche ya ga-abụ okpukpu abụọ: nke mbụ, na ịkwaga Home Fleet site na Scapa Flow ga-eme ka mgbochi nke British North Sea belata ma nye Germany nnwere onwe ka ukwuu ịwakpo ndị njem ụgbọ mmiri nke Atlantic; nke abụọ, ihe ọkụkụ ahụ ga-abụ ihe nnọchianya nke ịbọ ọbọ, na-akụ n'otu ebe ndị German High Seas Fleet nyefere ma kpochapụ onwe ya mgbe mmeri nke Germany na Agha Worldwa Mbụ. Dönitz họọrọ Kapten Günther Prien maka ọrụ ahụ, na-eme atụmatụ maka mwakpo maka abalị nke 13/14 Ọktoba 1939, mgbe ebili mmiri ga-abụ ọnwa na abalị.
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