When he arrived in Qiongzhou, Zhao Bing ended his wandering life, everything gradually became stable, and the military and political institutions of the General Administration were basically sound, and there was no need to take care of everything as before. His life naturally had regularities.?                                                                                                                                                                                                                                  �

The original plan was to teach Confucian classics such as Deng Guangjian, and Jiang Qi taught military tactics, and to be strict in the courtesy, the national governance and chaos, and the way of becoming an official. Because Jiang Qi was not there, there were strict in the class. It usually lasted for an hour and ended at the end of Si. When there was no class, there were only two days of the first and second days, which was the day of discussion in the palace. After class, Zhao Bing began to handle official duties, reviewed reports sent by various departments, or summoned officials to ask questions. At noon, work was finished, lunch and lunch break.

If there is no official business to deal with in the afternoon, it can be used as a leisure time. As for what Zhao Bing does, as long as he doesn't leave the house at will. What he loves most is the most fashionable leisure method of modernity - reading, being idle, and doing handicrafts. When the evening drum sounds, it's time to dinner. If you have nothing to do, you should go to bed at the beginning of Xu. There is no one who sleeps at this point in the previous life except the old man and the old lady. Zhao Bing often delays one hour, or even later...

Today, Zhao Bing finished his business early and dived into his studio after lunch. This was specially arranged by him by the lieutenant general as a supervisor based on his own ideas. Not only were there a complete range of tools, but also various materials. All he lacked was modern power tools. However, he was already very satisfied. Not only did he have a room alone, he also became a good place for him to spend his time.

At this moment, two ship models were placed on the wide workbench, with a few patterns painted on parchment next to it. One was a turtle boat that followed him, and the other was a model of multiple paddle boats. This and the drawings were all found by Zhou Xiang. After looking at it for a while, he secretly praised the Song Dynasty as a peak period of the ancient science and technology exhibition. He didn't understand anything else, but from the ship model and drawings, it can be seen that the shipbuilding industry at this time had accumulated rich experience from design to construction and had a scientific work program.

The Song envoy's shipbuilding had used the load load as a design indicator, and then calculated the length, width and other data based on actual needs such as rivers and sailing. First, the ship model was created, and the ship diagram was drawn based on this, and the materials were used, some labor was estimated, and a total cost was calculated, so that the ship owner could allocate money and grain before carrying out construction. If the ship was well built, the court often issued ship samples to other shipyards and ordered to imitate it. This would obviously not be possible if it did not have a very skillful craft level.

Zhao Bing initially thought that it could be transformed according to his ship pattern, but he soon found a new problem. He ignored the difference between the turtle ship and the Song ship, which was that the hull structures of the two were completely different. This reminded him of the academic community in his previous life that had a clear definition of the turtle ship - the master of the ancient Mengchong warship, and he thought this judgment was quite appropriate.

North Korea has admired Chinese civilization since ancient times and has always been an apprentice of China. Of course, it is undeniable that it has certain creativity. The design of the turtle ship is like this. Its shape adopts the Mengchong shape, but its hull is based on the slab boats from North Korea. Like the Japanese Anzhai ship, this kind of ship is a variant of the ancient Chinese warship tower ship, so all three adopt the shape of adding high-rise buildings and upper-floor ships above the hull, as well as the power mode of using the same sails.

It is not wrong for Japan and South Korea to learn Chinese advanced technology. The problem is that both of them learned a half-baked man, which resulted in the warships being only on the surface but not inside. The ship was built very strangely. These large ships had no keels and completely relied on the hull to support the structure. At the same time, there were no watertight cabins and keels. They were keelless warships, which made them disintegrate when they encountered great storms in the distant seas, so they only had the ability to sail near the sea. This is also the reason why ancient Japanese warships were called border slitting ships.

Of course, the master is much more skillful than his apprentices. Shipbuilding craftsmen in the Tang and Song dynasties were able to design and build different types of ships according to the geographical characteristics of different waters and different uses of the ships. At the same time, they were also good at absorbing the advantages of several excellent ship types and combining them to create new ship types. The multi-paddle boats used by Zhao Bing were new ship types using sand boat bottoms, warship covers, and sea boat heads and tails. In fact, they were created by absorbing the advantages of these three ship types.

The multi-pad boat uses the bottom of the sand boat, while the longitudinal structure of the sand boat uses a "flat keel" to strengthen the longitudinal strength. Although this flat keel is relatively weak, the keel passes through the tail and the structural strength is still greater than that of other sailing ships of the same level; its lateral structure adopts the process of watertight compartment, which is a layer of watertight bulkhead composed of the bottom and the ribs on both sides and the beam rings under the deck.

Using watertight compartments greatly enhances the ship's ability to resist sinking, especially to increase the lateral strength of the hull. The previous bulkheads in the middle of the ship were installed before the ribs, and the bulkheads in the middle were installed behind the ribs. This installation method can prevent the bulkhead from moving, so that the sidewalks and bulkheads are closely combined, firmly supporting the two sides, which enhances the lateral strength of the hull, so that the entire ship is integrated vertically and horizontally, with better sink resistance.

In addition, there are many advantages in the structure of the sand boat. Its deck surface is spacious, has a small shape, low freeboard, and uses a large beam arch to enable the deck to quickly discharge waves. There is a "boat" at the stern to facilitate the installation of the elevator and to facilitate the control of the tent; the rudder area is large and can be lifted and lowered. When going out to sea, some rudder blades are lowered below the bottom of the boat, which can increase the effect of the rudder and reduce cross-drift. It can be raised in shallow water to prevent the beach from touching the beach; the bottom plate and the side plate are overlapped by two or three large plates, respectively, forming a fish scale type and connected by nails and tenons, making the whole stronger and more advanced than the North Korean inlay method.

In addition, the sand ship has a flat and wide body, with an approximately elliptical cross-section, and a U-shaped bottom improves overall stability and gives it the characteristics of an artillery fire platform. Due to the enhanced firmness and sinking resistance of the ship, masts and sails can be added. The good seaworthiness of the hull structure makes the transformation feasible. Of course, because of these special structures, the cruise degree of the ship is lower than that of the V-shaped bottom sea, which is not suitable for sailing in the distant sea, but overall it still meets the current needs. After all, there is no perfect thing in the world...

Warships are specially designed and manufactured for combat, and the same is true for turtle ships. Zhao Bing's transformation also requires ensuring that the warships have good seaworthiness, maneuverability and high degree while ensuring that the turtle ship itself has advantages and improvements on this basis can only be considered successful.

The Mongols won the world immediately, and their greatest advantage was to advocate attack and be good at melee combat. The Song army was best at defensive counterattack, first relying on high walls and long spears like forests, dense arrow rains like hedgehogs, and then considering counterattacking against the enemy. In the era when the 6th Army had an absolute advantage, the navy was just an auxiliary armament, and it was inevitably influenced by the combat ideas of the 6th Army.

The original intention of the basic design of the turtle ship is to avoid the battle method of platoon battle that is prevalent in water wars today. It does not engage in face-to-face hand-to-face hand-to-hand combat with the enemy, but to maximize the advantage of long-range firearms, disrupt the enemy's offensive formation, and then use the angle of impact to hit and sink the enemy ship. Zhao Bing wanted to maintain and innovate while maintaining this design idea, so as not to transplant the turtle ship to this era and be unacceptable to the local environment.

In terms of protection, the gangways of multiple paddle boats are manufactured by overlapping. There are fourteen rows of ship boards from keel to the side. One to ten rows are two layers of ship boards are superimposed, and the eleven to thirteen rows are superimposed. The total thickness of the three layers reaches 18 cm, and can also be thickened as needed, up to six layers. Although the turtle ship adopts the explicit construction technology of the Koreans, the total thickness of its gangway boards is only four inches, about twelve centimeters, but even this degree of thickness makes the Japanese muskets completely unable to shoot the turtle ship's hull.

From this we can see that the gangway of the multi-altitude boat is much thicker than the prototype of the turtle ship, but the most primitive muskets are much more powerful than modern crossbows. Even if the multi-altitude boat is no longer reinforced, it is enough to resist the current bows and arrows. Zhao Bing knew that in fact, before the Ming Dynasty, artillery in the 18th and 19th century was difficult to sink enemy ships when bombarding wooden warships, but there was a real-life artillery in the time of the alternation of the Song and Yuan dynasties.

Zhao Bing on the top felt that it should be changed to a dome-type structure, so that vertical force could be increased. After all, large warships are generally equipped with stone throwers. Although the accuracy of the thing is very poor and the bluffing posture is greater than the actual combat significance, it is inevitable that when a blind cat encounters a dead mouse, it is always good to prepare. It is necessary to install armor on the back and install an iron cone to prevent the enemy from jumping. In addition, fire prevention measures are also necessary. Zhao Bing has not yet confirmed the specific method of using it. This needs to be decided after experiments.

The U-shaped bottom of the sand boat with multiple paddles has already made it very navigable. The turtle ship needs to use angle impact to impact the enemy ship in combat, because stability and sink resistance are important. At the same time, as a long-range weapon shooting platform, the ship also requires good stability. The solution of ancient craftsmen was to equip the ship with a "flat basket". When the wind and waves were heavy, the bamboo basket containing stones was placed from the ship and hung it in the water to reduce the swaying of the ship.

However, Zhao Bing knew that there was a simpler and safer way, which was to transform the watertight cabin at the stern of the ship into a living water cabin, which is also called a buoyancy cabin or an anti-swing cabin. It is to open a hole in the appropriate position of the cabin, and as the stern rises or falls, the water in the cabin can flow in or out, thereby reducing the sway of the ship and achieving the purpose of maintaining the balance of the hull.

Reducing the center of gravity of the ship to increase the stability of the ship was also a method known to ancient people, and this is particularly important for turtle ships and must be firmly preserved. Sea ships are warships commonly used by the Yuan army. They can use their tall hull to crush and collide with enemy ships, and can also provide convenience for soldiers to jump on the side. However, they often use V-shaped bottoms, which leads to a high center of gravity and a low center of gravity collision attack, in addition to being sunk, it is also very easy to overturn. This is also a natural conflict between the two ships!

In ancient times, there was no steam engine or fuel engine, let alone nuclear reactors. In addition to borrowing the power of nature, there was only human motive to drive ships. It was necessary to install sails on multiple paddle boats. The rotatable flat trapezoidal inclined sails in the Chinese civilization area could adjust the angle of the sail at any time according to the wind direction; the bamboo pole-dimensional sail was large in weight and quickly lifted and fell. These technologies were very mature and did not require Zhao Bing to consider them much. In this way, sails could be used as power during non-combat or cruise, which could reduce the physical consumption of sails. In combat state, the mast with a bamboo-tethered bamboo structure could be easily put down, the sails were put away, and the sails were converted to oars and oars as power.

No one has seen the prototype ship of the turtle boat, but everyone thinks it is powered by oars, not the commonly used oars in the West. Anyway, Zhao Bing must have chosen oars. oars are installed on the oar eaves on the stern or on the side of the boat, and the movement trajectory is a bit like a fish swinging their tails. Because the oar leaves change the angle of attack but never come out of the water, they can do continuous work. Moreover, the fulcrum of the oar is located at the near-midpoint of the oar, which saves more effort when rowing, so the ancients said that "one oar and three oars". Some people in the West also believe that the wisdom of propellers is related to the use of oars by the Chinese.

There is no need to ask that the crossbow is the best choice for long-range weapons. Its power has been tested in practice. It is no problem to break through the ship's plate, and whether it can be sunk depends on luck. It is no problem to be used to kill people, just to die and to get hurt. Zhao Bingjue's crossbow still has the potential to drive. As long as it is equipped with a suitable "ammunition" and use different shooting methods, it can also exert greater power and effect.

Human-machine cooperation is also a problem that Zhao Bing needs to consider. After all, it takes ten days and half a month to go to sea to reach 6 places. Life and combat are on the boat. It is also necessary to provide a good environment for sailors to ensure their physical and mental health and improve their combat effectiveness. However, in the limited space, it is necessary to store daily necessities, weapons and ammunition, and place more than 20 large and small crossbows and the working space of sailors, leaving it with convenience for life. It is very small to plan a place for sailors to eat, drink, defecate, and sleep in the remaining space. It is very testable to the designer.
Chapter completed!