"전 세계 딱 6개국만 됩니다" 한국이 도전하는 핵추진 잠수함, 잠수함에 원자로 넣는 게 왜 이렇게 어려울까

There is a country that operates dozens of nuclear-powered submarines itself, yet strongly opposed South Korea's plan to build one. Furthermore, the fact that only six nations have been able to open this door over the past 70 years is due to "five locks" that most people are unaware of. We will unravel the science behind nuclear-powered submarines—which you may have only heard the name of on the news—from start to finish: why submarines need to breathe periodically, how nuclear propulsion allows them to survive for months without surfacing even once, and why the figure of "20%" became the key to diplomatic negotiations. Towards the end of the video, examining the double standards of that "opposing country" using science and data will provide a satisfying resolution. Nuclear propulsion and nuclear armament are completely different matters. Along with that difference, follow the five locks one by one. Chapter 00:00 Only 6 Countries in the World — Why Is Korea Challenging for the 7th Place? 01:10 Why Do Diesel Submarines Need to Breathe? 05:40 Hunters That Don't Need to Breathe — The True Nature of Nuclear Propulsion 07:55 Squeezing Power Plants into Buses — The Wall of Miniaturization and Noise 09:40 The Secret of the 20% — Why Fuel Is Diplomacy, Not Technology 13:40 Five Locks — Why Only 6 Countries Have Opened These Doors in 70 Years 15:55 While They Run It Themselves — The Real Reason China Opposes 17:40 From the First Button to the Last — The Homework of Dismantling