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''The African Queen'' is a 1951 romance/adventure film directed by Creator/JohnHuston, based on the 1935 novel by C.S. Forester, and starring Creator/KatharineHepburn and Creator/HumphreyBogart.

Hepburn plays Rose Sayer, a missionary's sister living in German East Africa at the start of UsefulNotes/WorldWarI. Bogart is Charlie Allnut, the hard-drinking man with a riverboat who, among other things, brings the mail from town every few weeks. When Rose's brother dies, he offers to take her to the nearest town to catch a ship to Britain. Being gutsy as she is, Rose instead creates a daring plan to build a makeshift torpedo, sail ''down'' the river (which no one has ever done) and take out the ''Königin Luise'', a ship patrolling the German-controlled lake that is the only thing standing in the way of the British army. This being a film with a man and a woman as its primary stars in the [[TheFifties 1950s]], naturally, [[UptightLovesWild they fall in love]].

Bogart's role won him his only [[UsefulNotes/AcademyAward Oscar]], while Hepburn would add yet another nomination to her impressive collection.

The TroubledProduction film made such an impression on Hepburn she later wrote a book about it, entitled ''The Making of'' The African Queen: ''or How I Went To Africa With Bogie, Bacall and Huston and Almost Lost My Mind''. Screenwriter Peter Viertel also wrote a novel about the shoot that was later adapted by Creator/ClintEastwood as ''White Hunter Black Heart'' starring Eastwood as John Wilson (a Huston {{Expy}}). This film is notable for how damn long it took to come out on DVD despite widespread interest: it only came out in 2010, at least in the US. (An earlier British DVD was taken from a faded print. Later DVD and Blu-Ray releases are fully remastered.)
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!!Tropes Associated With This Film Include:

* AdaptationExpansion: [[spoiler: The end of the novel says that Rose and Charlie will try to find someone to marry them. In the film they actually are married on the deck of the German ship]].
* AdaptationalBadass: In the movie version, Rose and Charlie actually [[spoiler: succeed in sinking the "Louisa"]]. In the novel they don't, the [[spoiler: ship has to be sunk by a couple of more modern British gunboats transported overland piece by piece and then reassembled to be launched in the East African lake]].
* AdaptationalNationality: Charlie is a patriotic working-class Englishman in the original novel. Humphrey Bogart couldn't do the English accent, so the character was made Canadian. His patriotism still applies to UsefulNotes/TheBritishEmpire, which sort of works.
* AdaptationalVillainy: [[spoiler: The Captain of the "Louisa" condemning Charlie and Rose to hang. In the novel he rejects that notion as uncivilized and hands them over to the British under a flag of truce.]]
* BeautyIsNeverTarnished: Subverted for the most part. Rose and Charlie certainly look like two people who have lived in Africa for a while - Charlie especially is very sun-tanned while Rose's complexion is explained by the hats she wears. Her clothes at least look as though she's had them for a while and they do rip after a while. Charlie seems to hang a lampshade on them not looking worse - by Rose being a Determinator who works hard to make an effort.
* BigDamnKiss: Rose and Charlie kiss after surviving being shot at by German sentries.
* CharacterDevelopment:
** Rose learns to let go of her social inhibitions and get down and dirty for the sake of their goal.
** Charlie likewise becomes more optimistic and less lazy.
* CosyCatastrophe: Charlie remarks early on that The African Queen has enough supplies for them to wait out the war on a quiet part of the island. Even when they're going down the river, they're never short of food or opportunities to wash.
* TheDeterminator: Rose really will stop at nothing to make sure they get to their goal.
* DoesThisRemindYouOfAnything: An unbelievable amount of stuff gets slipped under the radar in this movie...
** [After going down the first rapids]:
--> '''Charlie:''' I don't blame you for being scared, Miss, not one little bit. Ain't no person in their right mind ain't scared of white water.
--> '''Rose:''' I never dreamed that any mere physical experience could be so stimulating!
--> '''Charlie:''' How's that, Miss?
--> '''Rose:''' I've only known such excitement a few times before - a few times in my dear brother's sermons when the spirit was really upon him...I must say I'm filled with admiration for your skill, Mr. Allnut. Do you suppose I'll try practice steering a bit that someday I might try? I can hardly wait... Now that I've had a taste of it.
** And the scene of her pumping the bilges, as he shows her how to do it...more...slowly...
* DeusExMachina: When the ''African Queen'' is stuck and lost in a marsh, Rose prays for help. When she and Charlie go to sleep that night, a sudden rain-storm washes them into the lake where they were headed to.
* DryCrusader: Rose really doesn't like people drinking alcohol and demonstrates it by dumping out Charlie's gin.
* GrandeDame: Rose has some of the characteristics of this type, especially early on.
* ImportantHaircut: Charlie shaving off his stubble coincides with him taking the mission seriously from now on.
* KickTheDog: The German army burning down a native village in act one. At least it's implied that the villagers were only [[PetTheDog captured rather than killed]].
* LastRequest: [[spoiler: Charlie and Rose get one before the Germans are about to hang them. Charlie uses it to ask the captain to marry them.]]
* MacGyvering: Charlie manages to repair his damaged boat using a makeshift bellows and anvil, and uses some cannisters, blasting powder and bullets to create some makeshift ramming explosives.
* MarriedAtSea: Well, married at a lake, but it's still the captain who marries them. Leads to one of the most iconic lines of the film.
--> '''Captain''': I now pronounce you husband and wife - proceed with the execution.
* MoodWhiplash: Charlie clowns around making animal noises that send Rosie into fits of laughter. Then they both notice the huge waterfall ahead...
* NonNudeBathing: Rose and Charlie go bathing on opposite sides of the boat, for the sake of decency. Then Rose can't climb back in on her own; there are several {{Fanservice}}-y shots of her stretching her legs out to try, with no visible clothing. Finally she asks for Charlie's help, but insists that he avert his eyes... and when he pulls her up onto the boat, it turns out she was wearing a short shift the entire time, and just has the nudity taboos appropriate to the post-Victorian missionary that she is.
* NotEvenBotheringWithTheAccent:
** Rose is actually ''supposed'' to be a Briton (the sister of ''very'' British Robert Morley). Katharine Hepburn uses her own natural accent - which is actually a Mid-Atlantic one that actors in America were trained in on the stage back in the day (essentially the American equivalent to the British RP). It however sounds decently English to American ears.
** As noted above, Humphrey Bogart couldn't do the cockney accent that Charlie was written with. So he becomes a Canadian instead.
* OppositesAttract: Charlie is a slobby Canadian engineer, while Rose is a prim and proper missionary. They hit it off almost immediately.
* ThePollyanna: Rose is this merged with StiffUpperLip. Katharine Hepburn was told by John Huston to play her like Eleanor Roosevelt, with her "society smile" at all times. She called this the best direction she ever received.
* PluckyGirl: Rose is a little more refined than most examples, but her spirit and determination to sink the U-boat definitely puts her in there.
* TheQuest: To sink the Louisa via a homemade torpedo.
* ShirtlessScene: Charlie gets one when he has to pull [[FanDisservice leeches off himself]].
* SkewedPriorities: Subverted. Rose is initially horrified at Charlie coming into her sleeping quarters and orders him out. Then she realises how hard it's raining and tells him he can come back in.
* SlipknotPonytail: Rose's hair finally comes out of its updo in the third act.
* SpiritedYoungLady: As with many Katharine Hepburn characters, Rose is very spirited and determined.
* UptightLovesWild: Rose in this case is the uptight that loves Charlie's wild.
* VeryLooselyBasedOnATrueStory: It was based on the real-life sinking of a German gunboat in UsefulNotes/WorldWarI that required hauling a boat through the wilderness. No, it was not done by a beautiful movie star and a plucky mechanic. It was done by the Royal Navy. In turn, Creator/ClintEastwood made a thinly veiled depiction of this film's production in ''White Hunter Black Heart''.
* WartimeWedding: [[spoiler: Rose and Charlie's wedding on the deck of the German ship]].
* WasntThatFun: Rose ''liked'' going through rapids!

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