Author of remembrances Ганс Якоб Гебелер in the Second world war-time served as the motor mechanic of the second class on the u-boat of U - 505. With the German care and exactness of Гебелер did records about the device of submarine boat, about the service, about life of crew in a limit space of submarine, about implementation of combat missions and domestic problems that had to be decided to the seamen. Vividly, brightly and in detail an author describes hikes in Атлантике and in the Caribbean sea, tells about the battle comrades and gives an estimation to the commanders, with bitter taste marking that sometimes a crew had to contest with four enemies: by a sea, englishmen, damages of technique and own officers. During ten years Ганс Гебелер worked on the memoirs and completed them by means of journalist, professor Бейнбриджского university of John Ванцо.A book is provided with maps showing way passed by the submarine of U - 505.