This scarce 5 x 8 inch, 40-page soft cover booklet was written by Lieutenant Commander Max Bartsch who also made the wonderful cut-view picture on the cover. This very interesting item was published 1940 by Wilhelm Lim-pert Publishing House in Berlin. It aimed especially at Hitler Youth boys with the goal to attract them to volunteer in the U-Boat weapon. The book is written like a conversation between two older boys, one tells the other about his fantastic teacher and his lectures about the German U-Boats. The boy repeats everything he has learned to his friend and the more he "lectures" the more excited both of them get! The booklet contains several photos and illustrations and at the end a several pages long list of what to do and what is required in order to get accepted as a volunteer in the Reichskriegsma-rine (RKM or Nazi Navy). It was i.e. preferred that the applicant was a member of the Marine-Hitlerjugend.