This is a thrilling maritime disaster film and another masterpiece by director David Green after directing the popular TV series Root. When a nuclear submarine surfaced after testing, it collided with a large cargo ship at sea, made a big hole in the bow and immediately sank more than 1,000 feet to the bottom of the sea. After receiving the extremely critical news, the United States Coast Rescue Center sent experts to take a small submarine to begin a thrilling undersea rescue. Most of the shots of this film are shot at the bottom of the sea and are as exciting as ordinary disaster films and are ornamental and entertaining.