PSX ONE coating restores ‘Battleship of Presidents,’ now an interactive naval museum. The USS Iowa protected America for nearly 50 years. Now PSX® ONE coating, an advanced marine coating introduced last year by PPG Industries, is protecting the ship. Known as the “World’s Greatest Naval Ship” and the “Big Stick,” the 887-foot-long, 45,000-ton USS Iowa was first deployed in 1943. It is also called the “Battleship of Presidents” because it hosted more visits by U.S. presidents than any ship of its kind, including its historic escort of Franklin D.