K-278: The Russian Submarine the U.S. Navy Couldn't Match Sunk with Nukes Aboard

Summary: In the 1980s, the Soviet Union unveiled Komsomolets, a groundbreaking submarine that set new depths for underwater combat capabilities. Despite its advanced design and technological prowess, a tragic fire in 1989 led to its sinking in the Norwegian Sea, taking two-thirds of its crew with it.

-The project, initiated in 1966, aimed to test the limits of deep-diving submarines, resulting in a titanium-hulled vessel capable of reaching depths and speeds unmatched by its contemporaries.