なぜ世界は日本の“静かすぎる”潜水艦を欲しがるのか ―海の忍者の正体

Japanese submarines are said to literally "disappear" in the ocean. Despite not having nuclear reactors and being small in size, why are they called "ninjas of the sea"? The answer lies in one thing: "silence." This book unravels the secrets of the silence hidden within the Soryu-class and Taigei-class submarines, revealing the technologies of Japanese companies by name. As a conventionally powered submarine that doesn't rely on nuclear energy, Japanese submarines are among the world's best. Experts even rate them as "among the strongest in the world." The foundation of their strength lies not in flashy power, but in their ability to "silence sound." From the anechoic tiles covering their entire bodies, to GS Yuasa lithium-ion batteries, and the "ears" that distinguish only the target in the pitch-black ocean—this book systematically unravels the details, from Mitsubishi Heavy Industries, Kawasaki Heavy Industries, and GS Yuasa to the hands of nameless craftsmen, based on publicly available documents. It covers the latest vessel, the Chogei, which entered service in March 2026, making it a timely topic. If you watch until the end, when you hear the name of a submarine on the news, you'll be able to see the "true nature of its silence." ▼ What you'll learn in this video ・Silence: Why does the anechoic tile covering its entire body allow it to "disappear" in the sea? ・The heart: The choice not to carry a nuclear reactor and GS Yuasa's lithium-ion battery (Oryu → Taigei type) ・Eyes and ears: A mechanism that allows it to distinguish only the other party's sounds while remaining silent in the pitch-black sea ・The anecdote of "stealth": How much of the story about it being called a "ninja of the sea" is true? ・The builders: Mitsubishi Heavy Industries, Kawasaki Heavy Industries, and the hands of craftsmen who lay each tile one by one ▼ Table of Contents *Chapters will be inserted after the video is completed based on actual measurements (Control Tower - Production tab "🎬 Chapter Measurement"). Script times are not included because they will shift during editing. 0:00 Opening 02:21 Chapter 1: Silence – Why Does It Disappear at Sea? 04:54 Chapter 2: The Heart – A Quiet Power Source Without a Nuclear Reactor 07:29 Chapter 3: Eyes and Ears – How Does It Find Its Target in the Pitch-Black Sea? 10:10 Chapter 4: The Lost Ship – How Really Is "Stealth" Real? 12:43 Chapter 5: The Builders and "Yamato" – Silence is Born from Human Hands 14:57 Summary: A Quiet Pride That Disappears at Sea ▼ Related Videos ・What is the True Identity of the "Battleship Yamato," the Strongest escort ship built by the combined technology of Japanese companies? → The original "guardian of Japan's seas." The largest series on this channel.    • 日本企業が技術を結集して作る最強の護衛艦「戦艦ヤマト」の正体とは？防衛企業紹介（三菱...   ・The power source of the "Battleship Yamato," realized with the technology of Japanese companies. From Integrated Electric Propulsion (IPS) and Solid-State Batteries to Nuclear Power → A deeper look at "Batteries and Nuclear Reactors." A companion piece to this "Heart" video.    • 日本企業の技術で実現する「戦艦ヤマト」の動力。統合電気推進（IPS）、全個体電池から...   ・Why Can Japan Build the World's Strongest Fighter Aircraft? Four Genes Inherited from the Zero Fighter → From Showa Era Masterpieces to the Reiwa Era. A video showing "Why Japan is Strong" from the air.    • なぜ日本は世界最強の戦闘機を作れるのか？零戦から受け継いだ4つの遺伝子   ▼ Subscribe to our channel here    / @気になる科学   We read all comments on this channel! Our reply rate is over 90%! If you don't believe us, please check the comments section. If you're even slightly moved by the realization of "Japanese submarines were so amazing," please like and subscribe to our channel. ▷ What Japanese technology do you think is the "quietest and coolest"? Let us know in the comments. #JapaneseSubmarines #SoryuClass #TaigeiClass #NinjaOfTheSea #JapaneseTechnology ``` ``` [Music provided by: Pinguino, Hikari Surprise]