HMS Surprise is a fictional ship from the novels of Patrick O'Brian, particularly known for its role in the Aubrey-Maturin series. The ship is a Royal Navy frigate, originally named HMS Surprise after being captured from the French. It is depicted as a fast and agile vessel, capable of engaging in naval battles during the early 19th century. In the stories, HMS Surprise serves under the command of Captain Jack Aubrey, who is a central character in the series. The ship's adventures include various missions, battles, and explorations, showcasing the life of sailors during the Napoleonic Wars. Its detailed portrayal reflects the historical naval practices of the time.