Harmony Huskinson writing for National Geographic:
In February 1941, the S.S. Gairsoppa, a 412-foot steel-hulled British cargo ship with stockpiles of tea, iron, and silver, was weathering a storm when it was struck by a Nazi torpedo. The ship sank within 20 minutes; only one person survived.
At the time, the silver that ended up on the seafloor was insured at $1.3 million. Today it’s worth about $75 million.