Iraqi class 400 submarine, Japanese black technology

Iraqi class 400 submarine, Japanese black technology.

During the Second World War, Germany gave full play to the "wolf tactics" in the depths of the Pacific Ocean. As one of the axis countries, Japan also has strong strength in submarines. Class I 400 submarine is a class I submarine built by the Japanese Navy during World War II. It was the largest submarine during World War II and before the construction of nuclear-powered submarines in the 1960s.

Iraq's 400-class submarine is 122 meters long, 12 meters wide and 7 meters high, with a surface displacement of 3,550 tons, an underwater displacement of 6,560 tons and a maximum range of 60,000 kilometers. The designed maximum speed is 20 knots above water and 7 knots under water, with a range of 33,000 nautical miles/16 knots. The crew of Class I 400 was originally designed as 145, and later increased to 2 13, and it carried 220 people in actual combat. Carry enough fuel to sail around the earth for one and a half weeks. Therefore, before the emergence of nuclear-powered submarines, the Iraqi 400-class submarines can be said to be the "handles" of submarines.

The Iraqi 400-class submarine was conceived by Isoroku Yamamoto, commander-in-chief of the Japanese Joint Fleet. Shortly after the Pearl Harbor incident broke out, Isoroku Yamamoto came up with the idea of transferring the war to the United States, that is, using naval submarine-launched aircraft to launch air strikes against coastal cities in the west and east of the United States. The Iraqi 400-class submarine, known as the "diving aircraft carrier", was born under the crazy plan of the Japanese army.

The hull of the class 400 submarine is very special. Designers adopted a horizontal double-tube pressure shell design, much like a pair of glasses, which was specially designed to ensure the safety of the ammunition depot and huge fuel tank in the submarine. It will also strengthen the stability of the entire submarine and lay a good foundation for carrying reconnaissance planes. Moreover, due to frequent cruises in the Pacific, food and supplies are stuffed into every corner of the submarine, and even the narrow aisles are filled with food boxes.

At the beginning of the design, each Iraqi 400 submarine can carry two planes (later, due to the reduction of the number of submarines, the carrying capacity of the aircraft was changed to three per ship), and the designer also prepared a very spacious hangar for this submarine at the time of design-a hangar with a length of 35 meters and a diameter of 4 meters is enough to accommodate three small attack aircraft, and the Japanese "Blue" water attack aircraft tailored for the Iraqi 400 also adopted the design of foldable main wing.

There are three refueling systems in the hangar, which can use the heat generated by submarine operation to heat the fuel, so that the fighter can take off immediately after refueling, without preheating the engine like other aircraft. In addition, an 85-foot-long ejection zip line extends from the hangar mouth. Usually, the plane is folded and put into the hangar. In the battle, it was dragged to the catapult in turn to spread its wings, refueled and reloaded, and ejected and took off. After completing the task, it landed on the water near the mother ship and was hoisted back to the ship by a foldable crane.

In order to realize Isoroku Yamamoto's crazy plan of raiding the Panama Canal and dropping bombs on Washington, the designers prepared all kinds of powerful weapons for the Iraqi Army 400. One of the most important is the iconic three carrier-based attack aircraft-"Blue" attack aircraft, although the weapon configuration of this fighter is relatively weak compared with conventional fighters.

However, the weapon configuration of 1 "Jiu San" machine guns, 800kg torpedoes or aerial bombs is enough to deal a heavy blow to US surface ships on the premise that the number reaches a certain base. Moreover, this fighter takes only a few minutes in the whole battle preparation stage, and it can attack quickly after locking the target and leave the battlefield immediately after a quick blow.

After the American troops occupied Okinawa, they randomly prepared to attack Japan. The chief of staff of the Japanese navy believes that if the Panama Canal is bombed as planned, it will have little impact on the war. In order to stop the American attack, we must fight it directly. At this time, 15 us navy aircraft carrier assembled at the us military base in ulrich atoll, ready to attack the Japanese. So the Japanese changed their plans to attack the US military base in Ulissi.

But before the attack, Japan announced its surrender. 1On August 22nd, 945, the Allied Forces ordered Japanese submarines to destroy all weapons. Soon, the US Navy captured 24 Japanese submarines, including three Iraqi 400-class submarines, and took them to sasebo Bay for research. Later, because the United States received intelligence, the Soviet Union was sending troops to inspect Japanese submarines. So the U.S. military destroyed most submarines about 35 kilometers southeast of Fukuoka Island.

The remaining three ships, I 400, I 40 1 and I 402, were towed to the United States for further research. Houyi 400 was towed to the offshore of Oahu and sank by itself. Yi 40 1 has not been disposed of offshore Hawaii, and Yi 402 has not been disposed of offshore Wudao.