Nelson and the Seaview witness the detonation of a new bomb developed by the Chinese. No bigger than a milk carton it creates a blast 70 miles across. An American scientist who had defected to the other side steals it for plans of his own.
Did You Know?
The scenes of the Seaview under the ice are stock footage from the movie "Voyage to the Bottom of the Sea" (1961) See more
When Seaview gets to the test site, The Captain orders the ship to "silent running". Yet, the submarine is still pinging away with its active sonar, which would be turned off in "silent running". See more