Grey Lady Down

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.