U型潜艇是第一次世界大战时德国人开发的一种常规潜艇。这种类型的潜艇以其卓越的水下机动性和作战能力在海战中占尽了风头,在战争中发挥了巨大作用。正是因为德国在第一次世界大战期间使用潜艇在战争中获得了巨大成功,因而使得德国海军对潜艇作战难以忘怀。第一次世界大战之后,《凡尔赛条约》规定战后德国不能拥有潜艇,但希特勒上台后立即决定大力发展 The U-submarine was a conventional submarine developed by Germans during the First World War. This type of submarine, with its excellent underwater mobility and operational capabilities, took the limelight in naval battles and played a huge role in the war. It was because of the tremendous success that Germany used submarines during the First World War in the war that the German Navy was unforgettable in its submarine operations. After the First World War, the Treaty of Versailles stipulated that Germany could not own a submarine after the war, but Hitler decided to vigorously develop immediately after taking office