Captain Nemo and the Underwater City offers Fraser a position at Templemer. This alienates Joab, who helps Fraser and the Baths steal Nautilus II, on condition they leave without bloodshed, and allow the crew to return with the submarine intact. They manage to take the submarine and are followed by Nemo in his submarine. Nemo explains there is fault with the Nautilus II's engines that means the sub could explode. The chase is brief. Unable to match the speed of the escaping submarine, Nemo has Nautilus I sheer away, to try 'going under the reef.' Confused by their pursuers apparently giving up, Fraser asks the Nautilus
Soviet submarine S-178 Soviet submarine S-178 С-178 (S-178) was a Project 613B (NATO: ) diesel submarine of the Soviet Navy. On 21 October 1981, "S-178", under the command of Captain Third Rank V.A. Marango, was transiting on the surface at , returning to base after two days of sound trials. The sea state was 2 (less than one-metre waves) and night time visibility was unlimited. The starboard diesel was under repair, so the propulsion plant was aligned port diesel, starboard electric motor. For convenience, the diesel mechanics and electricians had opened the watertight doors between compartments. In addition, the cooks had opened other