The Jolly Roger is a non-canonical yacht created for the 1982 film Evil Under the Sun. The boat is owned by Sir Horace Blatt, and Poirot visits it when Sir Horace is moored off the coast of the south of France. Sir Horace offers Poirot to travel with him to the Adriatic island where Daphne Castle's hotel is located. Poirot declines the offer, preferring to take the train.
The ship share the name with the hotel, the Jolly Roger Hotel, from the original novel.