The MS St. Louis was a German ocean liner most notable for a single voyage in 1939, in which her captain, Gustav Schröder, tried to find homes for 908 Jewish refugees from Germany, after they were denied entry to Cuba, the United States and Canada, until finally accepted in various European countries, which were later engulfed in World War II. Historians have estimated that, after their return to Europe, approximately a quarter of the ship's passengers died in concentration camps.