1942年4月,希特勒的U型潜艇把战火蔓延到了美国。由于无法破译德军的无线电密码,盟军舰艇遭到重创,美国通往欧洲的供给通道受阻。因此为了截取德军潜艇的密码机,美国海军采取了一次冒险行动。 茫茫的北大西洋上,德军U-571潜艇偷袭盟军舰艇得手,可是一艘英军巡洋舰突然出现在U-571的前方,并向其发起猛烈炮击。全艇人员立刻各就各位,紧急下潜,紧张的气氛笼罩在整个潜艇里,海洋深处,不时传来震耳欲聋的爆炸声,U-571潜在水下一 April 1942, Hitler’s U-shaped submarine to the war spread to the United States. The Allied warship was hit hard by the inability to decipher the German radio code, blocking the U.S. access to Europe. Therefore, in order to intercept the German submarine’s password machine, the U.S. Navy took an adventure. On the vast North Atlantic Ocean, the German U-571 submarine succeeded in stealing allied ships, but a British cruiser suddenly appeared in front of U-571 and launched a violent shelling on it. U-571 potential underwater immediately, the entire boat crew immediately, emergency dive, tension enveloped the entire submarine, the depths of the ocean, from time to time heard the deafening sound of explosions