The successful launch of the Giant Bird No. 2 transport aircraft gave the Allies more confidence to achieve victory in the next battle and defeat the little devils and Germany and Italy as soon as possible.

For the Eighth Route Army, it means that there is more income, and the current Eighth Route Army is really not bad for money, which is much richer than the army.

Under such circumstances, Duan Peng's proposal to design and build the first submarine of the Eighth Route Army was also approved.

The submarine is a silent killer underwater, and it is capable of sinking large warships, so it will be a very big deterrent to the little devil navy in the future.

The submarine designed by Duan Peng this time must be the most advanced in the world, even more advanced than the German U-boat.

Duan Peng remembered that in his previous life, the Chinese Navy's submarine technology was learned from the Soviet Union, and the Soviet Union learned it from the German U-boat.

However, the back waves of the Yangtze River push the front waves, so the R-class submarines designed by the Soviet Union on the basis of U-boats, as well as the Type 033 submarines copied by China later, are superior to the German U-boats during World War II.

In the history of the development of the Chinese Navy, in 1950, because it wanted to resist the United States and aid Korea, it put forward a request to order Soviet R-class submarines.

In April of the following year, the Navy sent more than 200 officers and men to the Lushun Submarine Detachment of the Soviet Pacific Fleet to learn submarine technology, and the first submarine base was built the following year.

In 1954, the Soviet Union delivered to the Chinese Navy two old C-class submarines, which were the main submarines of the Soviet Union during World War II, which began to be built in 1934, with a displacement of 1,100 tons, a speed of 19 knots, a diving time of 72 hours, and in addition to torpedo tubes, there were 100 mm deck guns and 45 mm secondary guns.

Of course, the C-class submarine was also learned from Germany, the German IA type submarine, with a displacement of 1,120 tons, a speed of 18 knots, an underwater speed of 7 knots, a cruising range of 13,000 nautical miles on the water, a diving depth of 200 meters, and 22 torpedoes.

In the fifties, after China received information on the R-class submarines from the Soviet Union, it began to build such submarines in 1955, and in a few years it built 21 submarines.

And now, the submarine designed by Duan Peng is at the same technical level as the 033 submarine, and it is not too advanced, so there is no problem at all in building it.

Compared with the submarines of this period, the difference between them and the submarines after the war is very large, because the submarines of this period actually look like a ship, not a boat.

The same is true for the installation of naval guns on the deck, the same is true for Duan Peng's design, the submarine adopts a streamlined hull, but the structure is different, because the German U-21 submarine uses a double-hull, while Duan Peng intends to use a single-hull.

The reason for the use of double-hull is actually because the steel used in submarines at this time is not strong enough, and the double-hull can only be used to achieve the design strength.

But Duan Peng can now build high-strength submarine steel, which is 300 megapascal steel, so it is enough to use a single-hull design.

This not only saves a lot of steel, but also reduces the dead weight of the submarine, increases the internal space, and makes the crew have better combat and living space.

In terms of power, the submarine designed by Duan Peng uses two 1,500-horsepower diesel engines to generate electricity to drive two 1,500-horsepower electric motors, or two 100-horsepower cruise motors and two sets of propellers, so that the sailing speed is much faster than that of the 21-type submarine, because the power is stronger, the hull is lighter, and the displacement is smaller, so the maximum underwater speed can reach 21 knots, and the underwater endurance time can reach 100 hours, which is equivalent to four days, one day more than the 21 submarine.

The interior of the Type 21 submarine is very narrow, and now the Eighth Route Military Submarine designed by Duan Peng naturally has a lot of space, and there are bathing facilities and refrigerators in the boat.

During the operation, if it is an underwater submersible, then this submarine can sail 800 nautical miles at a speed of eight knots, which is more than twice as much as the Type 21 submarine, and it only needs to float to the depth of the snorkel to recharge once every four hours on the way.

This means that in the future, the submarines of the Eighth Route Army can sail freely underwater in the East China Sea, and even visit the military docks of the little devils.

The torpedo tubes designed by Duan Peng are also more advanced, with a fast loading system, which can launch continuous attacks, and can launch twenty-four torpedoes in thirty minutes.

Advanced sonar systems are certainly indispensable, after all, with this thing can we find targets and attack targets.

Today's project establishment meeting was also very lively, and Li Yunlong and they were also here.

The military leader said happily: "Comrades, today our navy is finally going to start building its own submarines, it can be said that this is a major breakthrough, we have to develop from the surface of the water to the underwater, submarines are very effective, can resist the weapons and equipment of the enemy's large ship formations, it can launch attacks in hiding, just like we fight guerrilla warfare, fight and run underwater, so that the enemy is unable to guard against it." Therefore, we must vigorously develop submarines, which is the focus of naval construction for a period of time in the future, in addition to building submarines, we must also train submariners, just like training our fighter pilots, and get attention! ”

The applause was very warm, and the leader's speech was inspiring.

When Duan Peng introduced the design plan, this time everyone saw the design of the submarine, which was indeed very beautiful, with a 60-meter-long hull, a width of six meters, a draft of 4.6 meters, a surface displacement of 1,100 tons, and an underwater displacement of 1,250 tons.

It can carry twenty-four torpedoes, which is indeed quite powerful, and if four torpedoes can hit the target, it is possible that the 10,000-ton giant ship will also be sunk.

Those 10,000-ton giant ships are not very afraid of bombing by planes, but afraid of torpedo attacks.

It can not only pose a threat to surface ships, but also attack enemy submarines, compared to it is more silent, and the underwater endurance is much higher than the most advanced submarine in the world, so everyone thinks it is very good.

When the navy is equipped with such advanced submarines, then it will be able to fight the navy of the little devils.

The first submarine designed by Duan Peng received strong support from the leaders and everyone, and then the designers will complete the detailed design and start building this kind of submarine.

The task is also very urgent, and the Navy does not yet have submarines, so it is necessary to equip a few first.