Grand Admiral Doenitz had promised the Fuehrer that the new electro- U-boats would provide a miracle at sea, once more wreaking havoc on the British-American lifelines in the North Atlantic.

• 海军元帅邓尼茨曾经向元首保证，新的用电力发动的潜水艇能在海上创造奇迹，再度给北大西洋上的英美生命线以沉重打击。