Transmigrated as the Crown Prince

"Commander, I have something to report to you." The ward door was quietly pushed open, and General Ernest's adjutant whispered.

Just as General Ernest was about to stand up, President Roosevelt waved feebly. "Just tell me what's going on. There's no need to hide."

The adjutant hesitated for a moment, then walked to the bed and spoke carefully. "The New York Coast Guard just sent news that an oil tanker exploded near New York Harbor."

"What?!" General Ernest stood up suddenly and said anxiously. "Is it a German submarine?!"

The adjutant shook his head. "It's not certain yet. There were a lot of ships coming and going there, but an oil tanker exploded. Well, there was also a passenger ship that was affected by the explosion of the oil tanker and was not spared. Apart from these two ships, there was nothing else."

"Don't worry, it's also a German submarine." Roosevelt coughed violently, and after coughing for a long time, he finally regained his breath and said word by word. "General Ernest, we will retaliate in kind and immediately send our submarine force to fight in Europe."

"..." General Ernest couldn't help but look embarrassed.

If we go forward, the United States is one of the first countries to put submarines into actual combat.

As early as 1776, during the American Revolutionary War, submarines entered the war arena for the first time. With the support of General Washington, David Bushnell, a graduate of Yale University in the United States who was full of patriotic enthusiasm, began to study the method of using submarine boats to attack the British army. In this way, the famous "Turtle" boat in the history of submarine development was born.

The "Turtle" boat looks like a sea turtle, and the air inside the boat can be breathed by the driver for half an hour. There are also two snorkels installed on the upper part of the boat, which are opened when floating up and closed when diving, so as to replenish fresh air. In order to control the floating and sinking of the submarine, there is a ballast water tank inside the boat, and a hand pump controls the water in the water tank. In order to cope with emergencies, a 90-kilogram iron block is installed in the boat. In critical moments, as long as the iron block is thrown away, the submarine can quickly float up. The movement of the "Turtle" boat is controlled by two human-driven propellers in the horizontal and vertical directions. The weapon is an explosive package weighing about 68 kilograms hung outside the hull. It must be hung on the enemy ship during the attack. on the shell. Even from the current perspective, this is also a well-designed underwater weapon.

Unfortunately, the "Turtle" boat attack was unsuccessful. On September 7, 1776, the first submarine attack in history began, conducted by Staff Sergeant Ezra Lee. He drove the "Turtle" boat and successfully dived to the stern of the British battleship "Eagle". The next job was to use a drill to drill holes in the enemy ship to fix the explosive packets. However, the place where he drilled happened to be a metal plate. After half an hour, he still could not drill through the enemy ship, so he had to surface and return.

Although the "Turtle" did not achieve any results, it opened the prelude to actual submarine combat. Since then, human battlefields have also developed from land and water to underwater. The "Turtle" has also won the world's first prize for its design principles that are the same as those of modern submarines. The reputation of the world's "first military submarine" occupies a place in the history of world submarine development.

The first submarine in military history to achieve definite results was also an American submarine, the USS Hanley.

Its appearance is similar to a "dolphin shape". The designed cross-section is oval, with a total length of about 12 meters and a height of 2 meters. It needs to be operated by 8 people at the same time. It uses a hand-cranked transmission device to drive the propeller, thereby realizing the submarine's Power driven.

As for the sinking and floating operation, since it is equipped with a true pressurized water tank, when the valve is opened and water enters the tank, it can sink. When floating, it is necessary to drain water through a manual hand pump to achieve the floating operation.

As for the weapons equipped on submarines, they are quite primitive and cannot be compared with modern precision information weapons. The Hanley submarine adopts the design concept of a rod-type torpedo. A "stick" more than 6 meters long is installed on the head of the submarine. On the other end of the "stick" is a package of more than 40 kilograms of explosives to attack the side of the enemy ship.

During the intense stalemate stage of the American Civil War, military confrontation at sea was also quite intense. At 9 o'clock in the evening on February 17, 1864, the submarine Hanley lurking underwater suddenly launched an attack on the enemy ship "Housatonic" and sank it in one fell swoop, creating world history. But then the Hanley mysteriously disappeared until 2000, when it was salvaged.

After many simulation experiments, experts concluded that the submarine was "sunk" by itself. It turns out that the submarine's long rod containing explosives was still too short. At the time of the explosion, the submarine was only 6 meters away from the explosion point. The violent shock wave severely damaged the crew's internal organs, blood quickly filled the lungs, and the crew died soon...

So far, this submarine has set many records: the first submarine to achieve victory; the first submarine to sink a submarine; the first submarine to sink itself...

Beginning with the "Barracuda" class that entered service in 1921, U.S. submarines officially started the tradition of naming them after aquatic animals: "Nautilus" class, "Narwhal" class, "Dolphin" class, "Sperm Whale" class, "Porpoise" Class, "salmon" class, "big tooth sea bream" class, "flounder" class, "mackerel" class...

However, since World War I, the U.S. Navy's emphasis on submarines has gradually declined. The submarines built are built with the mentality that others have it and I must have it. They are mainly used as scouts for the main fleet, called "fleet submarines." . Of course, in the vast Pacific Ocean, submarines with a displacement of only one or two thousand tons and using fuel-efficient diesel engines when sailing on the surface are indeed very suitable reconnaissance platforms.

By early December 1941, the eve of the Pearl Harbor incident, the U.S. Pacific Fleet had only 6 V-class, 3 P-class, and 12 newer Puffer-class submarines, a total of 21 submarines, of which only 11 could be put into combat immediately; the Philippines The Asian fleet also has only 23 large submarines and 6 S-class small submarines.

Since then, the United States has relied on its extremely strong industrial strength to build a total of 77 Cathark-class submarines, as well as 128 improved Balaobo-class submarines and 29 Tench-class submarines. As a result, the submarines were built too fast, and the U.S. Navy also encountered a happy trouble: it could not think of the names of so many marine creatures! So they had to find some marine biologists and fishermen to help name the submarine.

Not long ago, the U.S. Congress enacted the "Two Oceans Navy Act" to significantly expand the navy and expand its submarine force.

The first of a new generation of Catshark-class (Small Shark-class) submarines has begun to lay down its keel. The North Atlantic fleet is full of old-fashioned submarines. Why travel thousands of kilometers to attack the European coastline?

But facing President Roosevelt's expectant eyes, General Ernest could only bite the bullet and agree. "Yes, I will prepare immediately."

Back at the Navy Department in the Pentagon, General Ernest called in Rear Admiral Lockwood, who was the submarine commander of the North Atlantic Fleet.

Major General Lockwood had always insisted on using submarines as an independent combat force, but now he shook his head when he heard that General Ernest was going to send submarines to fight in Europe. "It's impossible. Our current submarines simply don't have this capability."

General Ernest said with a serious face. "I didn't come to you to hear you say it was too difficult or impossible. There is no difficulty in the world that cannot be overcome. If the Germans can do it, we can do it too. Give you a week to prepare, and the submarine will be ready in a week. set sail."