At the same time the Japanese army progressed to many islands on the Pacific Ocean and developed into a battle between Japan and the United States. To overcome this situation and change the game situation, the United States desperately will develop a strategy. In order to win over the entire Pacific Ocean, we decide to make sure the air-conditioner is secure. In the anti-ship gun principle to date, it was important to grasp the control of the sea first, but as a lesson of Pearl Harbor attack, it was demonstrated that aircraft bombing from the sky can
effectively neutralize the standard as a lesson of Pearl Harbor attack. If we can realize an aircraft with a long cruising distance, we will overwhelm our existing battleships overwhelmingly in terms of cost. Such analysis will steer a large-scale deployment of aircraft carrier and shipboard aircraft.
On the other hand, the Japanese army employee got intoxicated by the success of Pearl Harbor attack, perhaps he did not realize the factor of success. We did not realize that the battle dropped quickly by deploying the flight over the enemy line and bombing the air force, that is, the next generation battle technique by aircraft will be mainstream in the future. So it was not a problem not to destroy the US military aircraft carrier at all.
Therefore, we will construct the ultra-huge battleships such as Musashi and Yamato by mobilizing the national strength by using the know-how of anti-ship giant principle. These were the design philosophy of consolidating defense with a strong armor, attacking the enemy battleship by shooting the cannon with a large amount of ammunition inside. By contrast, we did not use much budget to operate aircraft, which was a factor in Pearl Harbor success. Also, it was not considered important to target US military aircraft carriers.
Then a massive aircraft made by Grumman will concentrate on pinpoint bombing to Musashi. Naturally if one torpedo is to be tolerable if armor of Musashi can withstand, if you eat dozens of fliers, the rivets of armor will come off and flood through the gap. Since it was designed to withstand cannons from long distances, excessive attacks from close range was unexpected. Musashi who developed to the highest confidentiality by overworking the national power was sunk, unable to fully demonstrate its ability. Even if you use the Musashi artillery, the target is far afield aircraft carrier so it is impossible. In the worst case, ammunition that was strictly protected inside is ignited and a large explosion from the inside occurs in the water.
Yamato sinks in the same way and the national strength left is only a few.
As a result of fighting with an ambiguous spiritual theory "I will never sink, I will not lose", I lost to the US thinking in a realistic, theoretical way. It is not simply a physical factor.
Well, even in the Star Wars world the empire that supports Death Star fought against the rebellion with an ambiguous spiritual theory. Vader is wary of it. It is claiming that things made by humans are not perfect invincible after all. After all, it is a strong man who destroyed the trade union's command tower from inside when he was a child (EP 1).