Bona Film Group announced Thursday its groundbreaking military action film about China's nuclear submarine fleet will ...

So, one of the things we do is study all those different sounds to help us out. Officer: Conn, sonar, new contact, Sierra 4-1. Alfa-class Soviet submarine. More from How Real Is It?

Many engineers from around the world gather at the Interpol marine facility "Pacific Buoy" on Hachijo-jima, in the sea south of central Tokyo Prefecture coast, to witness the launch of a new ...

However, things change when one the men is in a submarine trapped beneath the ocean and the other, a diver, is sent down on a rescue mission.