An arrested landing takes place when an aircraft's wheels hit the deck of a carrier and a hook at its rear snatches one of the cables snaking across the surface. It means each successful arrest is actually a safe airplane landing, and in the case of the Nimitz, that happened 350,000 times until now.
The Nimitz (CVN 68) is currently the world's oldest-serving aircraft carrier. It is also the first of its kind to reach so many successful arrested landings. To give you an idea of what that means, consider that if we are to do an average, the ship had 7,291 landings per year of service. That's 607 per month or 20 per day.
The milestone was reached on April 22, as the ship sailed in the waters of the South China Sea. The plane that happened to forever be tied to arrested landing number 350,000 is an F/A-18F Super Hornet deployed with the Strike Fighter Squadron 22 Fighting Redcocks (VFA 22).
As the second-oldest, the Eisenhower is next in line with the largest number of arrested landings, 326,600 at the time the Navy announced Nimitz's achievement a couple of days ago.
As for its other capabilities, the Nimitz is a nuclear carrier (with two reactors) that displaces over 100,000 tons. It can move at speeds of 58 kph (36 mph) and stay at sea for a quarter of a century at a time (provided it's regularly supplied), having virtually no limit on the distance it can cover.
The Nimitz is home to over 6,000 American troops. It is presently deployed in the U.S. 7th Fleet area of operations together with its entire Strike Group, which comprises the Carrier Air Wing (CVW) 17, the Ticonderoga-class USS Bunker Hill, and the Arleigh-Burke class USS Decatur, USS Chung-Hoon (DDG 93) and USS Wayne E. Meyer.