Tour the Belly of a Naval Wonder

Inside a National Treasure: SS United States

USS United States
USS United States
USS United States
USS United States
USS United States
USS United States
USS United States
USS United States
USS United States
USS United States
USS United States
USS United States
USS United States
USS United States
USS United States
This is what visitors today see when they first step aboard the ship, berthed in Philadelphia. An automatic watertight door -- one of many on board -- is visible to the right. Despite the peeling paint, rust and occasional pools of rainwater, engineers say the ship is in remarkable shape. (John Griffin/ABC News)
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