For ages I have had a hazy memory of a diver swimming along the wreck of a passenger liner that had sunk long ago and seeing a face at a porthole,this led to the discovery of people living on the sunken ship.I never investigated the possibility that this was an actual film,I just thought I was confusing memories of the Poseidon films or I had imagined it,after all,people living on a sunken ship? Ridiculous ! Turns out I didn't imagine it,after a simple google search I found that it was a made for TV movie from 1981 that featured the likes of Mark Harmon,John Ratzenberger and Christopher Lee no less !
Synopsis from IMDB -
During World War II the passenger liner "Goliath" is sunk by a German submarine. Portions of the ship's hull remain airtight, and some of the passengers and crew survive. Over the decades they build a rigidly regulated society completely isolated from the surface world, until in contemporary times a diving team begins to explore the wreck.
So I managed to gain a copy of the film and give it a watch,and while the film itself is quite ridiculous,I couldn't help enjoy it for its cheesy nostalgia alone,I just can't give it less than 7/10 !