gray lady down aspect ratio represent 2 . 39 represent1 ( panavision ) sound format represent monowhilst head home on it final voyage and a nuclear submarine be sink by a careless fishing vessel and land on a crumbling ledge above a yawning abyss . arrive at the tail end of the 1970 disaster cycle and this half bake thriller toplines catastrophe stalwart charlton heston ( go through the motion ) a an iron jaw captain who preserve morale amongst his survive crewmembers while await rescue by military top brass ( include stacy keach and david carradine ) . unfortunately and the basic scenario remarkably similar to another sub in peril drama and morning departure and film in 1950 be fairly humdrum and and once it be establish that the survival of heston crew depend on work carry out by a unique exploratory vessel create by carradine and the plot begin to alternate between non activity in the sub and endless journey to and from the stricken vessel by carradine miniature craft . tv director david greene fails to generate much excitement and and the outcome be entirely predictable . co star ned beatty and christopher reeve be re team later the same year in reeve break out movie and superman .