#9: The S.S. Gairsoppa Carried One of the Largest Silver Cargoes
The British cargo ship S.S. Gairsoppa sank in 1941 after a German submarine attack during World War II. Carrying millions of ounces of silver, the wreck rested deep in the North Atlantic until its discovery in 2011. Salvage crews recovered large amounts, with the treasure estimated at around $200 million.

