On Film 4 tonight was a film made in 1961 called: 'Voyage to the Bottom of the Sea.' I was 14 when I first saw it at the local fleapit, and at the time thought it was the bees knees.
Tonight however I couldn't help but laugh, especially at one line near the end as the submarine was about to save the world. The admiral (Walter Pidgeon) is calling the 'power room' after many explosions and burned out controls:
"Power room, power room, what happened to the reactors ?"
"Dunno sir, they just quit."
You just don't get engineers like that anymore ...
That film eventually spun off a TV series as I remember it, and the glass nosed submarine went on to save the world many times over.