SS President Coolidge
The SS President Coolidge was long considered one of the greatest, most extravagant ocean liners to have ever been constructed. In 1941, the ship was used to carry soldiers to Europe. She was sunk after hitting two mines in 1942.
The Umbria has been called the greatest shipwreck in the entire world by those who love diving. The entire ship is basically still intact after years. The cruise ship was used during World War 2 to carry explosives, and 360,000 bombs are still aboard the sunken boat.