The largest destroyer ever built for the U.S. Navy headed out to sea for the first time Monday, departing from shipbuilder Bath Iron Works and carefully navigating the winding Kennebec River before reaching the open ocean where the ship will undergo sea trials.
Consider this, the Zumwalt class Destroyer is the largest surface ship the US navy has. This is way more than a destroyer and this borders on being classed as a Battleship or a Heavy cruiser. With the Railgun coming online soon, this thing would intimidate anything floating today.
In my opinion, this would eclipse anything that is afloat on earth today and even what Russia and China has now, would make them look like small boats.