Gray Lady Down is a 1978 American submarine disaster film directed by David Greene and starring Charlton Heston, David Carradine, Stacy Keach, Ned Beatty, Ronny Cox and Rosemary Forsyth, and includes the feature film debut of Michael O'Keefe and Christopher Reeve. It is based on David Lavallee's 1971 novel Event 1000.
Promotional poster for Gray Lady Down
The submarine film is a subgenre of war film in which the majority of the plot revolves around a submarine below the ocean's surface. Films of this subgenre typically focus on a small but determined crew of submariners battling against enemy submarines or submarine-hunter ships, or against other problems ranging from disputes amongst the crew, threats of mutiny, life-threatening mechanical breakdowns, or the daily difficulties of living on a submarine.
The cramped, equipment-filled set of a submarine film (Das Boot, 1981)