The Golden Fleece
Published in the collection - novelization of episode 11 of the radio program of the same name as the collection.
Though he has little boating experience, Harry Lime takes the job of captaining a yacht from Spain to Hong Kong because the lovely Nadya asked him to. She is the widow of Hans who was a captain in the Nazi navy. They have been conveying a goodly amount in gold bars to her father, General Wai, which naturally sparks Lime's interest.