by John Lucarotti
[Starring] Ray Barrett, Geoffrey Keen, Philip Latham
Guest stars John Lee, Patricia English
Giant submarine tankers have been a dream in the oil industry for years. Now, they are not only possible but necessary - to ship oil out of Alaska under the ice.
Mogul's experiments have gone well. Now Stead, Thornton, and Izard visit their submarine - not in Alaska but in the Caribbean. Even there, though, things can go dangerously wrong - as Stead finds on his first underwater dive.
