The recording that the passengers hear in the lounge on day 169 is a cover version of "Powerhouse" by Raymond Scott, a song that was frequently heard in various Warner Bros. cartoons.
Instead of the usual list of cast credits at the end, actors are filmed boarding the simulated ship with their individual and character names displayed.
In the TV show Operation Hideout (1957), Jacqueline Scott plays the wife of a sailor who volunteers to take part in an experiment to test the long-term effects of carbon-dioxide on sailors in long undersea missions. She plays a similar role here.