Directed by David Greene, this fast-paced adventure thriller starring Charleton Heston and Stacy Keach presents a tense, well acted maritime drama involving the crew of a nuclear submarine in peril at sea. The plot unfolds tightly, capturing viewer attention as the risks steadily increase. Apparently filmed in 1977, the film was evidently released in some markets in 1978. A stellar cast and effective direction enhance the well written script, in which strong characterization propels the story forward. This movie reportedly ranks high among adventures at sea action dramas and, although some technology may appear dated today, the film remains popular.