He [Chupeta] became the first narco-trafficker to use narco-submarines. Drug Lords: The Takedown s1e7: Cocaine CEO, agent, National Geographic 2023
During the Cold War both the United States and the Soviet Union deployed submarines with ballistic missiles. Spy Ops VIII: Project Azorian
They were looking for an object [sunken sub] three miles below the surface. ibid. man in the know
Russia, August 2000, Kursk: She’s at the cutting-edge of Russia defences: powered by two nuclear reactors, she’s 150-metres long and as high as a six-storey building. More than twice the size of a jumbo jet. Seconds from Disaster s2e16: Russia’s Nuclear Sub Nightmare
A shockwave bursts through the command centre; the crew are slammed to the floor. Toxic smoke pours into the room. An explosion tears through the torpedo room of the giant Russian submarine … Another detonation rips through the front of Kursk … ibid.
The Russian Navy has documented 25 cases of submarine collisions since 1967. ibid.
The chilling truth is that Kursk was on the brink of nuclear disaster. ibid.
The first small explosion … The torpedo is Tube 4 was the first thing to explode ... When certain metals or even rust come into contact with HTP they act as a catalyst: the hydrogen peroxide breaks down into oxygen and steam … ibid.