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.
as Victor Bateman
as T.C. Hollister
as Sam Wallants
as Jack Beech
as Grace Wallants
as Cmdr. Prestwick (as Warren Kemmerling)
as Gordon Gaines
as Chris Moffet
as Lt. Cmdr. Hanratty