Lothar-Günther Buchheim was a German author and painter. He is best known for his novel Das Boot (1973), which became an international bestseller and was adapted in 1981 as an Oscar-nominated film. Buchheim was born in Weimar, in the Grand Duchy of Saxe-Weimar-Eisenach (present-day Thuringia), the second son of artist Charlotte Buchheim. She was unmarried, and he was raised by his mother and her parents. They lived in Weimar until 1924, then Rochlitz until 1932, and finally Chemnitz. He began contributing to newspapers in his teens and put on an exhibition of his drawings in 1933, aged just 15. He travelled to the Baltic Sea with his brother, and canoed along the Danube to the Black Sea. He spent time in Italy after taking his Abitur in 1937, where he wrote his first book, Tage und Nächte steigen aus dem Strom. Eine Donaufahrt. ("Days and nights rise from the river. A travel on the Danube."), published in 1941. He studied art in Dresden and Munich in 1939, and volunteered for the Kriegsmarine in 1940.