 C.S. Forester (qv) had written two different final scenes for his  book, one of which was published in England and the other in  America. In the more widely published American version, "Rose Sayer"  and "Charlie Allnut" are turned over to British officers, who then  blow up the Louisa . Another final scenes were, the African Queen  hits the Louisa and destroys it, after which Rose and Charlie walk  down the beach to inform the British Army that their way is now  clear. In a modern interview, Peter Viertel (qv) stated that since  he and John Huston (I) (qv) wanted Rose and Charlie to be together  at the final scene, they anticipated possible censorship problems by  inventing a way for the couple to be married on the German ship.