The African Queen

The African Queen is a 1951 adventure film adapted from the 1935 novel of the same name by C. S. Forester. The film was directed by John Huston and produced by Sam Spiegel and John Woolf. The screenplay was adapted by James Agee, John Huston, John Collier and Peter Viertel. 

Samuel Sayer (Robert Morley) and his sister Rose (Katharine Hepburn) are British Methodist missionaries in the village of Kungdu in German East Africa at the beginning of World War I in August/September 1914. Their mail and supplies are delivered by a small tramp steamer named the African Queen, helmed by the rough-and-ready Canadian boat captain Charlie Allnut (Humphrey Bogart), whose coarse behavior they tolerate in a rather stiff manner.

When Charlie warns them that war has broken out between Germany and Britain, the Sayers choose to stay on, only to witness the Germans burn down the mission village and herd the villagers away. When Samuel protests, he is beaten by a German soldier. After the Germans leave, Samuel becomes delirious with fever and soon dies. Charlie returns shortly afterward. He helps Rose bury her brother, and they set off in the African Queen.

Charlie mentions to Rose that the Germans have a gunboat, the Königin Luise (German for “Queen Louisa”), which patrols a large lake downriver, effectively blocking any British attacks. Rose comes up with a plan to convert the African Queen into atorpedo boat and sink the Königin Luise. Charlie points out that navigating the Ulanga River to get to the lake would be suicidal: to reach the lake they would have to pass a German fort and negotiate several dangerous rapids. But Rose is insistent and eventually persuades him to go along with the plan.