Transmigrated as the Crown Prince

Japanese technicians continued to improve the torpedoes, but the navy was not satisfied with the top speed of the torpedoes and hoped to improve them.

At that time, Italy developed a torpedo with a speed of up to 50 knots. After hearing the news, Japan immediately purchased 10 of them and conducted a launch experiment. They found that the secret of the torpedo's high-speed underwater operation is that there is an air cavity in the front of the torpedo head, which reduces the resistance in the water. (Italy doesn’t just make some weird weapons. Seriously, it has a lot of results to learn from).

Based on this, the technicians modified the torpedo's pure round thunder head and added a sharp cap, allowing the torpedo to reach a speed of 50 knots. Theoretically, it can even reach 60 knots!

In addition, Japan could not produce pure oxygen oxygen concentrators at that time, so it specially imported oxygen concentrators from Germany. They were copied by Mitsubishi Arsenal in Nagasaki and mass-produced to equip the navy's cruisers and destroyers. Cruisers use pure oxygen to extract from gases, destroyers use pure oxygen to extract from liquids. Although the latter's oxygen concentrator is smaller, the purity of the oxygen produced is pretty good. After a series of improvements and preparations, the Naval Torpedo School conducted a test launch on the heavy cruiser "Chomi" in 1935. All indicators satisfied the military. On November 28, 1935, the Type 93 oxygen torpedo was officially equipped with the Japanese Navy.

Before World War II, the Type 93 oxygen torpedo could be regarded as the pinnacle of the development of torpedo technology in the world. Its various indicators far exceeded similar weapons in other countries in the world.

Japanese technical experts at the time claimed that the Type 93 torpedo was 20 years ahead of the West.

Due to the successful implementation of pure oxygen combustion, the power of the torpedo has been greatly increased, and the range and speed have been greatly improved. When sailing at a maximum speed of 50 knots, the range reached 22,000 meters. When sailing at a low speed of 36 knots, the range reached 20,000 meters. The jaw-dropping 40,000 meters!

This distance even exceeded the main gun range of the major battleships of various countries at that time. Moreover, the use of pure oxygen also makes the torpedo's trajectory very small, very concealed, and difficult to detect. Since the main engine is started by air, there is still an obvious track within the first 300 to 400 meters of launch, but this distance is completely negligible compared with the ultra-long range of the Type 93 torpedo.

In addition to the advantages of long range, fast speed and small track, the power of the Type 93 torpedo is also unprecedented. Its explosive charge has increased from 295 kg of the Type 89 torpedo and 400 kg of the Type 90 torpedo to 490 kg, which greatly exceeds that of other countries. Based on the torpedo charge used in the warship's underwater protection design, it is difficult to imagine any ship being able to withstand the explosion impact of nearly half a ton of explosives. All these advantages made the Type 93 torpedo immediately become the "unique weapon" of the Japanese navy once it was equipped. It was classified as top secret and strictly kept secret. The relevant personnel were not even allowed to reveal the word "oxygen", but used "second "Air" or "Special Air" instead, seeking to maintain complete confidentiality.

The advantage of a time traveler is the various knowledge of later generations. Many of the results that others have worked hard for more than ten years to come up with are just a few words to Yannick.

For example, the oxygen ratio of oxygen torpedoes. In order to find the most correct ratio, the Japanese research department experienced countless accidents and failures and lost countless technical personnel. Yannick pointed it out in one sentence. The torpedo has also been improved and installed with its own "sound homing system".

It stands to reason that the internal space of the torpedo will be very tight after loading so many things. However, the German technical department replaced the high explosives in the original torpedo warhead with air-fuel explosives.

In this way, when the torpedo hits the target, the residual high-pressure oxygen in the propeller is ejected to form an air-fuel explosive powder-oxygen gas ball, which is then ignited and exploded. 60 kilograms of air-fuel explosive is equivalent to 500 kilograms of TNT. Its power can easily destroy large ships. If it is exploded in sea water, it will form air fuel explosive powder-pure oxygen "bubbles" in sea water. The explosion power of air fuel explosives in oxygen is much more powerful than the explosion in air. After detonation, The high-pressure water-borne impact pressure can break the side armor and cause the target to quickly flood and capsize.

As the submarine captain Jojim gave the launch order, a torpedo plunged into the seawater and rushed towards the transport formation 15 kilometers away at a speed of fifty knots (about 93 kilometers per hour).

Five minutes later, the "sound induction mechanism" of the torpedo, which had traveled more than 7,000 meters, was activated. It was discovered that its route was somewhat deviated, and the torpedo's pendulum control system began to adjust its direction and aim at the transport formation.

In the original time and space, when the German army put in acoustic torpedoes, it initially caused considerable panic in the Allies, because this kind of torpedoes would attack large-tonnage ships like eyes, and when a small boat sailed next to a larger target, , the torpedo will throw off the small boat and pounce on the noisier ship.

However, after discovering the characteristics of this acoustic torpedo, Allied weapons experts quickly thought of various countermeasures. The general idea was: "Create greater noise where our own warships are not in order to disrupt audio and visual." After the noise makers they created were released, they induced the acoustic mines to pass through one noise maker after another until they left the target area, finally changing the situation where the Allies were passively beaten. At the same time, the Allies stepped up their use of radar and sonar to search for and attack German submarines on the seabed.

This is also the reason why Yanik strictly prohibits the large-scale use of acoustic torpedoes by submarine forces. After all, once such torpedoes are used on a large scale, the enemy will easily discover its characteristics, and it will not be considered a secret weapon.

At the thirteenth minute, the torpedo had already penetrated the transport ship formation, but its good stealth easily evaded the destroyers patrolling the outside.

Although surrounded by various engine noises, the torpedo's "sound induction mechanism" has already targeted a large transport ship ahead.

This transport ship has a tonnage of at least 20,000 tons. It is fully loaded with special steel that Britain urgently needs, as well as many rare metals. The waterline of the ship was already very deep. Although the engine was running at full power, the speed was only a pitiful less than seven knots.

The torpedo hit the transport ship head-on.

"Boom!" An earth-shattering explosion sounded, raising a column of water rising into the sky.

Because it was fully loaded with metal, the ship had very little extra buoyancy left. Suffering this sudden heavy blow, the cargo ship was torn into two pieces and sank at an alarming speed.

What was even more unlucky was that another transport ship was sailing almost right behind the transport ship. Because it was following too close, it had no way to avoid it. The bow of the ship suddenly hit the transport ship that had begun to sink. The stern of the ship.

Boo! With a dull impact, the stern of the transport ship in front pierced the bow of the transport ship behind, and with the force of the sinking, a long gash was opened.

It seems thrilling, but this is not a serious injury that breaks the muscles and bones. Maybe with some repairs, we can continue to move forward. But before the sailors on the ship had time to take action, with the loud sound of the whistle, another transport ship behind the transport ship rushed over. As a result, the three ships collided, and the unlucky ship in the middle was completely lost. Necessity of rescue.