The jet liner Arcadia disappears at sea. Her final radio transmission – in which the crew reported seeing an old galleon – reaches World Security Patrol Headquarters, who relay it to the World Aquanaut Security Patrol in Marineville with orders to investigate. Captain Troy Tempest, Phones and Marina set off in Stingray accompanied by Commander Shore. Stingray arrives at the Arcadias last known position and encounters the galleon, which does not respond to Troy's hails. Shore and Phones board the ship and find its upper decks deserted. However, they fail to notice a platform built into the floor of one of the cabins and are lowered into a watertight section in the vessel's depths. There, they are held at gunpoint by an undersea pirate called Idotee, who reveals that he has converted the galleon into a submarine and that he used its cannons to sink the Arcadia. Idotee now intends to kill the Stingray crew for their crimes against the undersea races. Idotee instructs Shore to radio Troy and tell him to come aboard, but Shore disobeys and orders Troy to attack the galleon. Troy is unwilling to do either and submerges Stingray to evade the furious Idotee's cannon fire. Submerging the galleon, Idotee threatens to kill Shore and Phones unless Troy surrenders. Forced to obey, Troy puts on his diving equipment and exits Stingray. He enters the galleon via an airlock and is greeted by Idotee, who never intended to let Shore and Phones live and has tied them to chairs in front of a double-barrelled harpoon that is about to fire spears at them. Idotee says that he has a slower death in mind for Troy but is unaware that the captain has activated a WASP emergency plan: only one of Troy's two diving cylinders contains air and the other, which the captain has opened, is releasing laughing gas into the room. The gas sends Idotee, Shore and Phones into hysterics and they eventually pass out; Troy, who took a pill to counteract the effects, remains in control and kicks the harpoon aside just before it fires the spears, saving Shore and Phones. The Stingray crew take Idotee into custody and return to Marineville. Shore decides not to punish Troy for his insubordination, instead thanking him for his bravery in the line of duty.
Production
The galleon scale model was built by the AP Films special effects department under the supervision of effects director Derek Meddings, while the puppet-size decks were designed by art directorBob Bell. Both the galleon model and the deck sets were re-used in the episode "Set Sail for Adventure", where they appear as Admiral Denver's ship. Although Idotee is named in the script, the character does not identify himself in dialogue, instead telling Shore and Phones that his name "is of no consequence". The episode's incidental music was recorded on 25 October 1963 at Pye Studios with a 30-member band. Music for "The Golden Sea" was recorded in the same session.
Reception
Writing for the fanzine Andersonic, Vincent Law compares "The Ghost Ship" to the episodes "A Nut for Marineville", "Pink Ice" and "Invisible Enemy" for the way the characters react to the threat posed by Idotee. He notes that in the latter two episodes "the bottom line 'blast them before they blast us'" while the first two "riff on pretty much the same theme, the stock response to the unknown usually being to shoot first." Law also praises the flute music that accompanies the first appearance of the galleon, describing the piece as "unforgettable" and arguing that it "perfectly encapsulates the whole series."
