Dive into Fortune: 11 Unbelievable (& Profitable) Underwater Discoveries That'll Leave You in Awe

4. The Steam Engine of SS Thistlegorm

SS Thistlegorm: Sunken War Relic Estimated Value: $3.027 million* Year Lost: 1941 Year Found: 1956, Early 1990s Built by Joseph Thompson & Sons for over $3 million in 1940, the SS Thistlegorm was an armed Merchant Navy ship. Before her fateful end, she completed several missions and was recently refurbished in Glasgow.

The SS Thistlegorm: WWII Cargo Vessel The Thistlegorm’s final cargo was crucial for the war in Egypt—radios, Bren guns, ammunition, and armored cars. In 1941, German bombers struck, sinking the ship and claiming nine crew members. Decades later, Jacques Cousteau and other explorers uncovered the wreck, revealing its cargo and its powerful wartime story.