Based on an incident that occurred off the coast of Florida in 1973, this film tells the story of four men who find themselves trapped in a mini-submarine in the ocean depths.
Victor Bateman
T.C. Hollister
Sam Wallants
Jack Beech
Grace Wallants
Cmdr. Prestwick (as Warren Kemmerling)
Gordon Gaines
Chris Moffet
Lt. Cmdr. Hanratty
PO1 Stanton
Jeff Turley
Capt. Osborn
Jimmy
Cmdr. Robbins
Dr. Lewison
Howard Wynter
Sailor #1
Sailor #2
Seaman Schrier
Narrator (voice)