underground bunkers via giant hydraulic jacks while fighter aircraft and interceptor missiles are launched to counter threats. WASP personnel acknowledge commands with the phrase "P.W.O.R." – short for "Proceeding With Orders Received". Stingray is piloted by the square-jawed Captain Troy Tempest. He is paired with Southern navigator Lieutenant George Lee Sheridan, nicknamed "Phones" for his secondary role as Stingrays hydrophone operator. Troy and Phones board Stingray from the Marineville stand-by lounge by sitting on twin seats that are then lowered into the submarine via injector tubes. They answer to the "hoverchair"-bound Commander Sam Shore, whose daughter, Lieutenant Atlanta Shore, works in the Marineville control tower and is enamoured of Troy. The series begins with the WASP's discovery that the ocean floor is home to many advanced civilisations. Among these is the undersea city of Titanica, ruled by King Titan. A despot, Titan commands the Aquaphibians, a warrior race who possess a fleet of lethal submersibles called "Mechanical Fish". In the first episode, Stingray is attacked by Titan's forces and Troy and Phones are captured. They are rescued by Titan's slave, Marina, a mute young woman from the undersea city of Pacifica who can breathe underwater. Marina defects to the WASP and becomes a permanent member of the Stingray crew. Troy becomes infatuated with her, making Atlanta jealous. Furious at Marina's betrayal, Titan swears revenge on "terraneans" (land people) in general and Troy and the WASP in particular. However, his attempts to destroy Stingray and Marineville are always thwarted, often due to the incompetence of his henchman Surface Agent X-2-Zero. Titan's spy on land, X-2-Zero operates from the Pacific island of Lemoy, where he lives in an outwardly dilapidated house whose interior conceals vast banks of sophisticated surveillance and tracking equipment. Some episodes revolve around encounters with other races living under the sea or within the Earth (some friendly and others hostile), or investigation of natural phenomena. The final episode is a clip show in which Troy is named "Aquanaut of the Year" and past missions are recounted in flashback. Episodes Episodes are listed in the order of original broadcast in the ATV London region. {{Episode table |overall= |title= |director= |writer= |airdate= |prodcode= |airdateR= |prodcodeR= |episodes= {{Episode list |EpisodeNumber=39 |Title=Aquanaut of the Year |DirectedBy=Alan Pattillo |WrittenBy=Gerry and Sylvia Anderson |OriginalAirDate= |ProdCode=39 |ShortSummary=Named "Aquanaut of the Year", Troy sits before a live TV audience as a selection of his adventures are recalled