第二次世界大战前,由于英法等国压制德国海军水面舰队规模,纳粹德国不得不转而发展水下力量,以潜艇部队抗衡英法海上力量。二战爆发后,大西洋上的德国狼群曾让所有的英国船员谈虎色变。与之相比,尽管英国潜艇部队也有不俗的表现,但由于英国水面舰队规模太大,实力远超德国海军,使它们在大西洋上几乎无事可作。而在 Before World War II, due to the suppression by Britain, France and other countries of the size of the German naval fleet, Nazi Germany had to turn to develop its underwater forces and submarine forces to counter the maritime power of Britain and France. After World War II broke out, the German wolves on the Atlantic had let all British crew talk of change. In contrast, despite the impressive performance of the British submarine force, the British surface fleet is much larger and far more powerful than the German navy, making them virtually impossible to do on the Atlantic. And at