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?

The film focuses on the original USS Montana, a Navy armored cruiser commissioned in 1908 and decommissioned in 1921, and the ...

Welcome back to the FLUCTUS channel to witness how the United States Navy resupplies its submarines that are out in the ocean for months-long missions. Fluctus is a website and YouTube channel ...