The titanium pride of the Soviet submarine fleet, the K-278 Komsomolec, sank off the coast of Norway in April 1989. A fire onboard was the cause of the catastrophe. This one-of-a-kind vessel went ...
What You Need to Know: The Soviet K-278 Komsomolets, a titanium-hulled "Mike-class" submarine, set the record for the deepest dive by a military submarine in 1984, descending over 1,000 meters.