 Over 5,000 photographs, mostly taken by Buchheim, survived the war.From his experiences, he wrote a short story, ""Die Eichenlaubfahrt"" ("The Oak-Leaves Patrol") and a 1973 novel which was to become an international best-seller, "Das Boot", followed in 1976 by "U-Boot-Krieg" ("U-Boat War"), a nonfiction chronicle of the voyage.In 1981 Wolfgang Petersen created the critically acclaimed film "Das Boot" based on Buchheim's novel of the same name with several alterations to the plot and characters.