Zhao Bing naturally knew that there were ships that could travel against the wind. In modern times, whether it was nuclear power or ships powered by fuel and steam engines, it could be done, but in this era, and he could not have built them at the moment. Nowadays, ships that were driven by manpower and wind power are no wonder Zheng Yong and the others looked disbelief.

Of course, Zhao Bing did not say nonsense. There have been sailing ships that are powered by wind but can truly sail against the wind. That is, in the 19th century, in order to meet the needs of naval warfare, especially maritime trade, the fast sailing ship, which came into being in the history of navigation, can reach about 17 knots and has a load of about 10,000 tons.

In order to confirm his statement, Zhao Bing asked Wang De to take a ship model from his studio and put it in front of them. But apart from thinking that the ship looked strange, they could not see any mystery, nor could they explain the truth. He could only give the two people a popular science and tell the wonderful things of flying boats.

The ship has small freeboards and fewer superstructures, which not only improve the stability of the ship, but also fully play the role of the sail. The ship sails almost against the water surface, and the aspect ratio is generally greater than 6 to 1. Its underwater shape is designed to be the minimum drag value to increase the speed, but it also maintains a certain lateral drag profile, resulting in a particularly beautiful waterline. Its first waterline surface is even concave, and the long and sharp curved scissor-shaped head column is in a trend suitable for racing. It can slash waves at sea to reduce wave drag, and thus gained the reputation of "flying scissors".

In order to obtain high performance, the fly-shear boat has also made many innovative designs. The fly-shear boat's head column also extends the length of the hull. If a slash extends along the first column, you can hang more spinnakers in the head, which is conducive to expanding the capacity of the sail; the hollow bow makes the boat easy to lift the head in the wave, and improves its heading stability in the wave. The rear body gradually becomes tilted and has a very coordinated transition to the narrow round tail, harmoniously blending with the beautiful bow type.

This type of fly-slide ship is more obvious because the sail area is large. Generally, three to four masts are fully equipped with sail equipment. They are often high masts, which are 3/4 of the length of the ship. There are also moon sails and support sails hanging on the top mast sails. Sometimes there are outward sail trusses on both sides of the ship, called wing sail bars, which can hang wing sails, which make the lateral extension area of ​​the sail larger and even exceed the width of the hull.

The slim and long shape of the slim ship, with sharp and protruding front end, and the rear body gradually becomes tilted with a slanted water line, which transitions to a narrow round tail in a coordinated manner, harmoniously blending with the graceful bow type. The height of the mast is more than ten feet, and the area of ​​the sail reaches thousands of square meters. These allow the slim ship to obtain a higher speed and achieve the performance of driving against the wind by adjusting the sails.

"Your Majesty, this mast is so high, and it is four masts, covered with sails, so the speed must be very fast!" Zheng Yong looked at the model more than three feet long and pointed.

"Of course, there is always a trip of 300 miles a day!" Zhao Bing touched his chin and said. In fact, this is still conservative. Because he has not created a physical object yet, he thinks that he should not speak too much, so as not to be bragging.

In fact, according to Zhao Bing's knowledge, after the emergence of the flying shears, the sailing speed competition of such clutch ships was very frequent. The more famous one was the tea transportation competition from China to Britain in 1866. In addition to winning, this competition also had the purpose of seizing the season. The fast sailing ship "Antelope" and "Taping" left the Fuzhou Pier in China at the same time, and took 99 days to sail 25,600 kilometers to reach the destination in England. The "Taping" won the victory only by reaching twenty minutes early, with an average daily sail of 250 kilometers, which is about 500 miles now!

"Your Majesty, how much cargo can this ship carry?" Shangguan Xi was more concerned about the load capacity and asked with anticipation on his face.

"If it is done according to the standards, the length of the ship is more than 20 feet long and full load should be able to load 18,000 stones!" Zhao Bing roughly estimated that he was a model made by the most famous American fly-slipper "Short Shirt" that year. It was designed by Donald McKay, the most famous figure in the history of the development of American fly-slippers. He was a ship designer and manufacturer in Boston. He has successively developed more than 30 high-performance fly-slippers with a load capacity of 1,000 tons.

"Your Majesty, this ship can actually carry so much cargo. Isn't it a single ship that can support the load capacity of our three large sea ships at present? It doesn't look big!" There are only a few of the Wanshi Sea Ship in the Song Dynasty, and they are all used for military purposes. The cargo ship 5,000 stones is already a large ship, but Shangguan Xi saw that the length of the ship was not large, so he still didn't believe it.

"Master Shangguan, don't just look at the length of the ship. Look at where the waterline of the ship is. If it is built more than two meters deep, how much cargo can be loaded!" Before the little emperor could answer, Zheng Yong pulled him and pointed to the bottom of the ship and said.

"Oh, so that's it, I don't understand!" Shangguan Xi said with a wry smile.

"This kind of ship is specialized in roaming all over the world, so it requires a large bottom cabin to carry as much supplies as possible. Therefore, this ship has a deep draft, which is different from the structure of the lucky ship we use now. The bottom cabin is no less than the two-story pavilion!" Zhao Bing said with a smile. Because the current ships in the Song Dynasty mostly use watertight structures, which in turn affects the cargo capacity, and the hull uses a multi-layer superposition mechanism and an inclined rib plate design to enhance safety, so the way to play in the east and west is different, and it is no wonder that he does not understand.

"Alas, I also claimed to be traveling around the east and the west, but I didn't even understand these." Zheng Yong teased him again, "Because for the stability of the ship and the comfort of navigation in strong winds and waves, the height of the mast is determined by the width and draft of the ship. The mast of this ship is tall, with a narrow hull, and the bottom cabin is naturally much deeper."

"Haha, I am ignorant. I am not as knowledgeable as Master Zheng, and I will give you more advice in the future!" Shangguan Xi and his wife had been wandering on the sea for more than a year, so they naturally had a long time to get along. The mocking words of him were not like a pestle, but instead bowed and smiled.

"I also heard some fur from Your Majesty, how dare I speak out!" With the emperor beside him, Zheng Yong dared to be arrogant. After returning the gift, he turned to the little emperor and asked, "Your Majesty, this boat uses many sails and has never seen them before. Why don't you need a big sail here, but divide it into two pieces?"

"Well... let's say that!" Zhao Bing pondered for a moment, "The sails used by ships nowadays are mostly bamboo, reeds, and are mainly linen cloth, and are used as hard sails. This kind of sail is easy to lift and lower and easy to operate, and only a few sailors can be operated. However, the high-speed performance is poor and the limit speed cannot be increased; while this kind of sail is mostly woven with cotton and linen, which can be called soft sails. It has a large area of ​​wind consuming and can sail at extremely high speeds. The disadvantage is that soft sails are troublesome to operate, and a large number of skilled sailors are required, which are more difficult to face the sea conditions with faster wind direction changes!"

"Oh, so that's what he said!" Zheng Yong nodded, but at this time he heard Shangguan Xi's laughter. He knew that he was laughing at him, so he turned his face and rolled his eyes.

"Because when collecting soft sails, sailmen have to climb up the mast, pull the canvas on the sail truss and pull up the sails bit by bit, cooperate and tie them to the sail truss in layers. This method of collecting sails with horizontal sails is very manpower, and many sailors need to cooperate with each other." After clarifying the advantages and disadvantages of the two sails, Zhao Bing continued to preach. He was very willing to impart his knowledge to the people around him. After all, his identities are different, and it is impossible to do everything by himself. Only when they understand can they impart it to more people.

"There are many sail ropes that you mentioned, mainly because there is an additional layer of top sail at the top of the main mast, and the second sail is divided into two upper and lower halves." Zhao Bing said in a relaxed voice, "The second sail is divided into two upper and lower layouts, and you can use manpower to collect sails through the sail ropes on the deck, saving a lot of manpower. In addition, the four-sided sail on the second floor is the sail that provides the main thrust on the sailboat. It is divided into two upper and lower halves. The lower half is opened and the upper half is wrapped, and it can also flexibly adapt to the increase and decrease of wind force, which is convenient and applicable!"

"So that's it!" Shangguan Xi nodded beside him.

"You understand after hearing what Your Majesty said. I think you have understood it a long time ago!" Zheng Yong retorted.

"Zheng Dutong misunderstood. I understand what I said, not because I understand the principle of sailing as what Your Majesty said. Instead, the main consumption of cargo ships transporting goods is the salary of sailors. Of course, the smaller the number of sailors, the better. The most physically consuming heavy work of sailors is to harvest sails. Your Majesty changes this way, which greatly saves manpower and reduces costs, and naturally generates more profits." Shangguan Xi said with a smile.

"You are such a profiteer. You can figure out all this to the money!" Zheng Yong was so angry that he pointed his nose with his fingers.

"I am a businessman, of course I have to speak business in business..." Shangguan Xi avoided his fingers and said authentically.

"Oh!" Seeing the two people laughing and making fun, Zhao Bing sighed. In fact, what Shangguan Xi said was exactly the same. The first person to make the suggestion was the American cargo ship owner, and it was also for the sake of labor costs. The warship happened to be not short of manpower, so the warship had always maintained the ancient four-layer layout and no changes were made. Now it seems that the saying of interest-driven innovation is so reasonable.

"Since your Majesty had known that the ship could pass through the sea all year round, why didn't it be built earlier? In this way, we can travel to and from Western countries several times in a year and earn more money!" The two of them made a few words, and saw the emperor smile bitterly, and quickly put away their disrespect. Shangguan Xi asked.

"There are reasons for this. First, this ship has a deep draft and is suitable for cruising in the ocean, but not for sailing near the sea; second, when in Qiongzhou, the mission of our navy was mainly to fight, resisting the enemy north of the strait, and there was no time to send merchant ships to travel around the world; third, the wood used on this ship all requires good wood, and Qiongzhou is narrow and there is not so much good wood for us to use, and good wood is expensive, which is also difficult for our dynasty to bear. Therefore, it was not necessary and there was no need to continue, so it was dragged down." Zhao Bing said, but in fact, he knew that the main reason was the lack of money.

"At present, our dynasty vigorously develops maritime trade and trades with various countries. After finding the place of incense and medicine, we will make huge profits. We are worried that we cannot afford to build such a fast ship. The young man thinks that Your Majesty should implement it as soon as possible!" Shangguan Xi said.

"Well, you are right. But if Zhou Xiang was here, it would not be as easy as you said. You should know that a ship cannot be built as long as you have money. Even if there is a ship, it will have to be decomposed and redesigned layer by layer, and after being caused, it will have to be put into use after trial sailing. In addition, this kind of crane operation is very different from the current sea ships, and it still requires training sailors. This will take time, and it will take two years to get faster." Zhao Bing nodded and said with a smile.

"Oh, it will take two years!" Shangguan Xi said disappointedly after hearing this.

"However, you can put it into preparation." Zhao Bing said, "You didn't find that there are many good woods suitable for shipbuilding in Nanyang, and the prices are low. The goods that merchant ships returning from the West can be trafficked are limited, and many ships are empty ships back to the port. You can carry wood back to China for shipbuilding, which has solved a lot of problems."

"Yes, yes, the wood in Nanyang is of excellent quality, and the quantity is extremely large, and the price is cheap. It's so stupid that I didn't expect this. If I carry some back this time, wouldn't I make a big profit?" Shangguan Xi regretted it and said in great pain.

"You can also brag, claiming to be a genius in the world. You are not sure what is the difference between you and Your Majesty. Your Majesty's ability to make money is difficult for you." Zheng Yong and the other two may have been used to fighting in the lonely journey, so they did not forget to take the opportunity to sarcastically.

"Don't joke, how dare I compare with Your Majesty? Who in the court and the country did not know that Your Majesty was still in the old age and invented the method of drying salt and sold the salt to the Mongolian Yuan at a high price, which allowed the Chaozhou Dynasty to overcome the financial crisis and accumulate strength to recover Jiangnan. It is hard for all the eternal merchants, Fan Li and Guan Zhong to be called "a few days old!" Shangguan Xi bowed repeatedly and praised him with a grudge.

"Your Majesty, if the Clippers are built, remember to equip them to the Imperial Navy first. Then we can conquer the world and destroy the Mongol Yuan." Zheng Yong's purpose of attacking him was just to bring the Clippers under his command. He knew very well what a warship could sail against the wind and at a very fast speed would mean in battle.

"Hiss, this is probably disappointing you. This ship is not suitable for use as a warship!" Zhao Bing smacked the lower teeth and said helplessly.

"Your Majesty, why not?" Zheng Yong asked anxiously after hearing this.

"Look, in order to increase the speed of this kind of ship, the hull is designed with a long hull and the mast is tall. The recoil force generated by artillery fire is very likely to cause the hull to tilt, so it cannot be used as a warship. If it is just a troop transport, it can be used!" Zhao Bing pointed to the warship and said.

"This... Your Majesty, we can carry crossbows, so there will be no recoil. And Your Majesty is so talented that you can also redesign a ship!" Zheng Yong thought for a moment, but still said unwillingly...
Chapter completed!