The Rolex Submariner is part of Rolex's Oyster Perpetual line. Early sports models included the Rolex Submariner (1953) and the Rolex Sea Dweller (1967). The Rolex Submariner has appeared in a number of James Bond movies. They are available on the Submariner, Sea Dweller, Deepsea, GMT Master II and Daytona models. In 1964, Tudor also began producing an Oyster Prince Submariner specifically for the US Navy. Grumman selected a Navy submariner named Don Kazimir to be captain. Master Seaman Colleen Beattie became the first female submariner in 2003. The two dolphins are an allusion to the Rear Admiral's time as a submariner. The Royal Navy's senior submariner was for many years located at in Hampshire. Ayer's screenplay, "U-571" was based on his experiences as a submariner in the US Navy. Away from his duties as a submariner, he was an early pioneer of naval flight. Owens began his career as a nuclear submariner. The first Submariner was introduced to the public in 1954 at the Basel Watch Fair. Carter is the only U.S. president to have qualified as a submariner. The assigned case reference number of this first Submariner was either 6204 or 6205.