In this way, because of the soul of China, Malin dedicated the guns and cannons that helped the Chinese army to strengthen the Ming Dynasty, but because of the personal prejudice of a high-ranking official, he was put in the warehouse to eat ashes. As for the qualifications of the vassal state and the trade of tribute, it was even more lost.

It is also considered that Marin was unlucky. After all, the tribute trade he wanted was just the director of the Ministry of Rites. As the saying goes, county officials are not as good as current management. Marin happened to hit the gun of the relevant department, so he could only admit that he was unlucky...

If these guns and cannons were sent directly to the naughty child Zhu Houzhao, things might turn around. After all, naughty child Zhu Houzhao is a militant and likes weapons the most.

Unfortunately, after the guns and cannons were sent to the capital, they went directly into the warehouse of the Ministry of Rites and had no chance to take them out. Therefore, the naughty child Zhu Houzhao naturally didn't know.

If Malin knew that these advanced guns and cannons were thrown into the warehouse of the Ministry of Rites for eating as dust, he would definitely be so angry that he would spit out an old blood, and then he would carry a knife and travel thousands of miles to find Mao Cheng to PK...

...

Of course, Marin was not sure what happened in the Ming Dynasty. After all, there was no Internet or telegram to send the news back to Europe in time. Not to mention that he didn't know now, even if Columbus's fleet returned, he wouldn't know. Because Columbus' fleet did not know about the Ming Dynasty after they left Guangzhou... At this moment, Columbus' fleet was heading south on the South China Sea... With a full ship of cargo, Columbus and Contai and others returned, it was considered an explanation, and they were considered a meritorious service...

...

Shortly after Marin came up with the Chinese name of Jack Ma for Felice's second child, a good news suddenly came from Emden Shipyard - the development of the steering wheel was successful...

Hearing this good news, Malin immediately rode his horse and ran towards Emden, and came to the military shipyard north of Emden to visit the newly developed rudder wheel on the spot...

The uppermost part of the steering wheel, which is the hand-pulled part, is similar to the steering wheel in later generations. After all, Marin drew the patterns for those craftsmen.

The lower part is made of a series of bronze gears and copper rods. When steering is needed, the sailor turns the steering wheel, drives the multiple gears below and drives the copper rods, so that it uses the lever principle to thrust the underwater balance rudder... Then, under the action of the balance rudder, the ship completes the steering...

However, this steering wheel system did not meet the requirements of Marin's requirement of "one person to easily complete the rudder rotation". After testing, this steering wheel system requires a sailor with great strength to complete the rotation. Or, two senior sailors are required to complete the rotation of the steering wheel when driving at high speed...

However, no matter what, this new rudder system is much better than the old straight rudder pole. Moreover, the old straight rudder pole can turn the rudder to 5 degrees at most. The new rudder system can turn the rudder to 30 degrees... This greatly improves the speed of the ship's steering and enhances the flexibility of the ship...

Therefore, Marin rewarded every craftsman who participated in the research and rewarded 1,000 gold coins to reward their contributions.

However, Marin also said that the steering wheel system can actually be improved, ultimately allowing the steering wheel to complete the steering operation by one person. If these craftsmen can improve the steering wheel to complete the operation by one person, then Marin promised that each person would also reward each person with a huge bonus of 1,000 gold coins...

...

In addition to the development of the steering wheel system, the old sailors also expressed that they were very skilled in operating the upper edge inclined sail. After all, during this period, old sailors often drove ships with upper edge inclined sails to sea to explore the control method of the upper edge inclined sails. Now, the old sailors have also been almost exploring. For this reason, they also received Marin's reward... Although not as many as those craftsmen, it is enough to surprise the old sailors...

After all, in Europe, the status of sailors is far from comparable to that of craftsmen. Strictly speaking, craftsmen, especially powerful craftsmen, are called masters and respectful. And sailors... except for those captains and first mates, who cares about you, a humble sailor? Everyone knows about Columbus' discovery of America, and maybe some people also know Columbus' adjutant or first mate. But who knows the name of every sailor who discovers America with Columbus?

Therefore, sailors are humble, while craftsmen are noble. For rewards to craftsmen, Marin needs to give each person 1,000 gold coins (actually this is also a heavy reward). For those old sailors, each person can easily pass it with dozens of gold coins, and it will also make those sailors feel grateful...

Seeing that the two convenient R&D and testing were basically completed, Marin decided to ask the craftsmen to combine the two advanced technologies of rudder wheel and upper edge inclined sail into one ship...

In the end, the R&D team modified a schooner with a 250-class armed merchant ship as the mother hull...

However, during the modification process, many problems were also found. Among them, the most important problem is that the upper edge inclined sail cannot be made very high...

Why? Because the quality of canvas materials is average. If they are made too high and too large, after lifting the sail, it is easy for the sail to be unable to withstand huge pressure and tear it apart after a ride.

In addition, if the sail is made too long and too high, when lifting the sail, the spinners on the upper edge will tear the sail surface because they cannot withstand the weight of the upper edge inclined truss and main sail at the bottom...

After all, the canvas of this era are mainly linen, and the force it bears is relatively limited. If it exceeds this tension range, the sail surface will tear and damage...

In this way, after several failures, the shipbuilders finally came to a conclusion that the upper edge inclined sail can only be used for medium-sized ships such as level 250 armed merchant ships. No matter how big the ship is, it cannot be used... because no matter how high the sail is, it is easy to tear apart...

This chapter is not finished yet, please click on the next page to continue reading the exciting contents later! Marlin was speechless immediately... At the same time, he also remembered that the sails in later generations were able to make such large soft sails because they widely used high-quality and resistant materials such as strong nylon or sisal. Now European sails mainly use linen, and the strength is inevitably insufficient.

It would be fine if you put the sails on the truss on the upper side like an old-fashioned sailboat. And like Marin did, if you were towing the upper edge inclined truss and a series of copper rings, it would require a greater ability to withstand tension. Otherwise, if you accidentally, you would tear it apart with a 'sweep'...

Therefore, Marin needs to use higher strength materials to make the upper edge bevel sail...

No way to think about powerful nylon Marin, it is a product of modern petrochemicals. Not to mention that Marin does not understand petrochemicals, even if he knows petrochemicals, he cannot make powerful nylon without large-scale chemical equipment that is resistant to corrosion and high pressure...

However, sisal has the conditions to obtain...

At present, sisal is still companion with cactus in the desert area north of Mexico... As long as Marin sends people to Mexico to search, sisal can be found. After all, sisal has too obvious appearance characteristics, and as long as you see it, you can easily recognize it...

Just find sisal and promote planting. Then, the canvas made of sisal fibers that are high-strength, high-strength, and very resistant to seawater corrosion should be made higher and longer... Once the sail is taller, its area will naturally be larger, and the ability to use wind will naturally be stronger...

In addition, sisal is also an excellent material for making sea boat cables. Even in later generations, most of the cables tied with anchors are made of sisal fibers... It is conceivable that the cables that can be tied to a large ship of 1,000 tons or 10,000 tons in later generations have such strong tensile resistance... Canvas made of this fiber must have a tensile resistance far exceeding canvas made of linen...

...

But before obtaining sisal, Marin could only use a relatively short upper edge inclined sail. This short upper edge inclined sail can only drive a small wooden boat of about 200 tons. Even larger ones, like a 500-ton warship, is somewhat difficult to drive...

Of course, it’s not that I can’t carry it at all, but that even if I can drive it, the speed will definitely not be fast...

If a small boat with a capacity of about 200 tons can barely play the role of a sail, so that the boat can only reach a certain speed...

...

However, for now, Marin used this armed merchant ship with a displacement of 250 tons and equipped it with an upper edge inclined sail. With the new steering wheel system, a new type of bridle schooner has been created. This kind of ship not only has strong wind grabbing ability, but also has a convenient steering. It is very flexible on the sea...
Chapter completed!