It was reportedly detected by an autonomous underwater vehicle which took sonar images of the site and matched them with the dimensions of the lost Japanese warship.
The crew tracked 10 Russian military vessels nearby including this Kilo class submarine, before checking on a U.S. destroyer, the Roosevelt which was also being shadowed by a Russian warship.
Today, we're getting an exclusive look inside the USS Mississippi, one of the most powerful warships on the planet -- with a crew of around 140 people.