Mrs. Shelton's Journey (1975)

A Soviet motor ship chartered by an English tourist firm sets off from London on a round-the-world voyage. A competing firm prepares a provocation on the ship. Mrs. Shelton, having learned that her husband is cheating on her, goes on this cruise to survive the tragedy alone. But on the way she awaits a lot of adventures, as a result of which determined and resourceful Mrs. finds new happiness and new love...