Epic Underwater Warfare: Sonar vs. Submarine!

A helicopter flies towards the camera in what appears to be inclement weather. A depth charge is shown descending into the ocean. A depth charge is shown underwater. An underwater explosion is shown, creating a large splash on the ocean's surface. The rear of a submarine is shown underwater in a dark environment. The top of a submarine is shown from an underwater perspective, angled upwards. A sonar device is shown descending into the water. An animated diagram shows a helicopter using sonar to locate a submarine underwater. A helicopter is shown releasing a torpedo. A missile rises above the ocean surface, tethered with cables. An underwater view of a submarine-like object propelling through the water.