USS Iowa, Big guns – 16 inch diameter guns, barrel length: 68 feet. It took at least 77 men to fire the three guns in a turret. The ship has 3 turrets of this kind.
Designated the “World’s Greatest Naval Ship” due to her big guns, heavy armor, fast speed, longevity and modernization, she kept pace with technology for more than 50 years. Currently docked in San Pedro, CA