Atlantic waters, the crew of Dallas analyzes tapes of Red October′s acoustic signature and realizes that it is the sound of a new propulsion system. Meanwhile, CIA analyst Jack Ryan finds out that the submarine's new construction variations house its stealth drive. Later putting information about Ramius's letter together with the subsequent launch of the entire Northern Fleet, Ryan deduces Ramius's plans to defect. The U.S. military reluctantly agrees to assist, while planning for contingencies in case the Soviet fleet has intentions other than those inferred. After it is revealed that Ramius has informed Moscow of his plan for him and his officers to defect, Ryan becomes responsible for shepherding Ramius and his submarine away from the pursuing Soviet fleet and meets with Royal Navy acquaintance Admiral John White, commanding a task force from the aircraft carrier . After Ramius fakes a reactor accident, the U.S. Navy evacuates Red Octobers crew using a DSRV rescue submarine. Ramius and his officers stay behind, claiming that they plan to scuttle the submarine to prevent it getting into the hands of the Americans. In order to convince the Soviets that Red October has in fact been destroyed, a decommissioned U.S. ballistic missile submarine, , is blown up underwater as a deception. A depth gauge taken from the main instrument panel of Red October is made to appear as if it had been salvaged from Ethan Allen′s wreckage. Meanwhile, Ryan, Mancuso, some of Dallas crew, and Owen Williams board Red October and meet Ramius face-to-face. The deception succeeds in convincing Soviet observers that Red October has been lost and the Soviet forces withdraw, but Tupolev stays behind. Unbeknownst to anyone, Igor Loginov, a cook on Red October who is actually an undercover GRU intelligence officer, has remained aboard after the other crewmen evacuated. He attempts to destroy Red October by manually launching one of the submarine's missiles in its silo. Loginov is discovered and fatally shoots Captain Lieutenant Kamarov and seriously wounds Ramius and Williams. Ryan tries to reason with the GRU agent, who refuses to listen and is eventually killed in a firefight in the submarine's missile compartment. Later, V.K. Konovalov happens upon what is initially believed to be an submarine, being escorted by two other submarines. Based on its acoustical signature, Tupolev realizes that it is in fact Red October, and proceeds to engage it. The two U.S. submarines escorting Red October