Submarines aren't the only vessels in the ocean that combat submarines. Many surface ships also counter them, but they use anti-submarine rockets.

Submarines are hard to find. They exploit ocean depth, acoustic complexity, and thermal layers to maintain low observability and high survivability. Diesel-electric submarines are especially quiet at ...

Add Yahoo as a preferred source to see more of our stories on Google. Naval vessel firing missile - Historical/Getty Images Because of the specialized nature of submarines, a distinct military ...