Kursk: Disaster at Sea | 2001
Of all the nuclear-powered Oscar II class submarines in the Russian navy, the Kursk was the pride of the fleet. At over 143 meters long, it weighed more than 20,000 tons, and contained 24 cruise missiles and the Russian nuclear attack codes. The Kursk also contained a new torpedo -- the DST-90, able to travel at 163 feet per second underwater, almost twice the speed of other torpedoes. But this breakthrough weapon had a fatal flaw: a highly volatile hydrogen peroxide engine, ultimately responsible for the Kursk disaster.