While the sky was not completely dark, Class 9 hurried up and started work.

The various planks are marked and divided by them, and their use is distinguished by their respective materials.

Which is the hull of the ship, which is resistant to the wind and waves.

Which ones are inside the ship, and they are responsible for distinguishing, they have planned them one by one.

The whole looks organized.

This is also thanks to their previous preparations, during which they probably learned about the various textures of wood, plus the help of Wang Yu and their previous group of historical research groups.

Everything is going well.

Before the night came, all the wood species were completely distinguished.

Tough timber such as cedar is used on the hull deck, and as long as the outer layer is of high quality, ordinary wind and waves cannot cause damage.

As for a series of softer but tougher woods, such as red wood, they plan to use them all for cabin construction, because the light texture can better coordinate the overall weight of the boat, and the ability to bear heavy loads is also good, just enough to be used to bear weight.

After separating the woods, Class 9 immediately felt that the previous feeling had returned.

As long as everyone has a clear understanding of the whole, plan well in advance.

The construction of this hull is much simpler than the keel~

Speaking of which, isn't the hull of the ship completely encircling the ship along the keel?

As long as the force is calculated properly, these problems are not sprinkled water?!

Before leaving the warehouse, this thought uncontrollably surfaced in the heart of Class Nine.

According to their 'meticulous' calculations and estimates.

As long as everyone is still working at this rate, if nothing else, they will be able to completely surround the entire ship in a week.

After that, spend another week adding some of the necessary 'little buildings' around the ship, and they'll be done!

Doesn't that mean that in about half a month, they will be able to sail their own boat and come on a voyage that they can say and go?!

With this thought, Class 9 was not only excited, but also a little more excited.

Along the way, they are twitting about their own prospects.

Once at sea, how are we going to play, where are we going?

I can listen to Ren Yan a little tired.

But it's okay, according to Ren Yan's understanding of them now.

Shipbuilding, without accidents, is impossible.

After all, even if you have a full set of processes and various details in your head, you can't guarantee that you can do it in such a short time.

With just these little cubs in Class 9, it's even more impossible.

Even if they have a plan, so what?

In the face of reality, plans also need to be revised from time to time.

Moreover, they are still the first time, not to mention.

Sure enough, when it was close to noon the next day, the people of Class 9, who were still in high spirits, could no longer laugh.

Most of them stared at the seemingly well-built hull and fell into deep contemplation, and their brows couldn't help but squeeze together.

An expression that secretly drank a urine test sample.

The hull in front of them, although they knew that it was strong and tough, could never cause the slightest damage to it by ordinary shocks....

But...

This thing is leaking after all!

"Do you have any serious illness, why do you have to use mortise and tenon joints for the hull?!"

"And, even if you use mortise and tenon joints, why do you have to choose mortise and tenon joints like keels? I wonder how big a gap there is in the middle of the keel mortise and tenon?! ”

Wang Bo, who has been in charge of business docking recently, rubbed his forehead and looked at Li Qi and others, who were mainly responsible for construction.

Li Qi scratched his neck and said with some shame:

"You can't blame us, isn't this according to the ancient way of shipbuilding, mortise and tenon is the most common."

"And it's firm, the keel is perfect, okay..."

"So, you subconsciously ignore the gap?" Wang Bo looked at Li Qi and the others in disbelief.

Li Qi's faces turned red.

Wang Bo sighed and continued: "Moreover, I don't know if I said it or not, why do I always feel that it is unreliable to use mortise and tenon joints to make the hull?" ”

"Even if you don't use the keel-like crevice mortise and tenon, then it will have a gap after all, even if the back is painted, then it can really be waterproof all the time?"

"What paint is of such good quality that it doesn't dissipate at all in the sea for a long time?"

"You're not mistaken..."

"Is there such a possibility that the shipbuilding hull of the Ming Dynasty was not a mortise and tenon structure at all?"

As soon as these words came out, everyone in charge of actual shipbuilding was stunned.

There seems to be some truth to this?

Immediately, they looked at Wang Yu and the others.

This group of people started in shipbuilding, and their main work was the reproduction of shipbuilding technology.

Seeing this, Wang Yu pinched his chin, his brows furrowed slowly, and then shook his head:

"Impossible, absolutely impossible."

"In any historical document, the construction of ships involved mortise and tenon joints, I am sure of that."

"Even if the history books only mention the keel, even if it is speculated according to the keel, the hull should be related to the mortise and tenon joint."

"Otherwise, there is no need to leave a special mortise and tenon connection point around the keel and its ribs."

"This is something that we have analyzed with great difficulty, and there will be no mistake."

As he spoke, Wang Yu clicked on the connection between the hull and the keel, which was indeed connected by mortise and tenon joints of different shapes.

And, beyond that, they really couldn't have thought of a more efficient way to connect.

Nail?

Even if there was such a thing in the Ming Dynasty, what kind of nails would it have to be to completely connect the hull and keel closely...

Therefore, there is nothing wrong with mortise and tenon joints.

So, the problem is back to square one.

This thing is leaking after all...

They don't really sail a ship that is sure to leak, so what's the difference between this thing and rushing to reincarnate, but fortunately, after this thing was made, it was directly called [Hades]?

For a while, everyone in Class 9 fell into silence.

Knowing this, they realized that they had been optimistic after all.

They can do it in a month, and it's going well.

......

At the same time, in the live broadcast room, most netizens also fell into thinking.

If this is left to them, will they be able to solve it?

The wooden boat doesn't seem difficult, but it doesn't seem to be easy to get anywhere...

"To be reasonable, is it possible to stagger the planks and connect them directly with nails, as long as the nails are long enough and the force is dispersed enough, it shouldn't be a big problem.

Aren't all the medieval ships like this in those movies? ”

Soon, some netizens put forward their opinions, and then they were denied by others the next moment.

"You also said, it's a movie, or the Middle Ages."

"A medieval ship, even if it is fifty meters larger, is about the same, and the range is small, and if it is handled properly, it may be able to withstand wind and waves."

"But the ninth class is now building a giant ship of one hundred and fifty meters, and after the comparison is enlarged, any small problem will become a big problem, just like the keel they built before."

"Do you really think the nails work?"

"Moreover, what they want to build is a Daming treasure ship after all, and the power of Daming on the sea back then was called the world's first, and the craftsmanship must be different."

"So, mortise and tenon is probably the final way out..."

"But that thing must be leaking, and even if the middle of the hull is glued, it will definitely fall off in the violent shaking."

"Damn, this is not what people should do, the first step was finally successful, why is this second step so difficult?"

"It's not difficult, Teacher Ren will take the students to do it?"

"No, my head hurts when I think about it, I can't find the information at all at a certain point, and there is no other way for this thing than to flip the book."

"Why is there suddenly a loss of sympathy for Class 9?

Who would have such difficulties as children of the same age? ”

"It's the same, the same senior high school student, who can be so happy as them?"

"Energy is conserved, don't deceive me..."

Soon, in the live broadcast room, netizens gradually deflected the topic.

In the broadcast room, the judges couldn't give any evaluation in the face of the ninth class at this time.

In this matter, they are not professional and right, so they can only watch the live broadcasts of other players and say a few words.

He Bing, who was on the side, was a little melancholy.

Now that the ratings of Class 9 are high, how many words can you say?!

It's hard for me to keep going like this!

And the director team is also difficult.

At this point, they were already wondering if they were going to urgently find a shipbuilder to act as a judge.

Otherwise, how should the topic of Class 9 be opened in the future?

Or, luckily, find a captain?

In case the ninth shift really goes to sea after the ninth shift, the captain can also use it, right?

Gradually, this idea of the director team became heavier and heavier.

......

And at this time the ninth class.

After a long period of solo thinking and brainstorming.

Anyway, they decided to enlist the help of their own cheap teacher.

Although it seems to be very vegetable.

But it's better than stumbling around like a headless fly.

Just now, they have thought of many ways.

What gluing, module assembly, filling of gaps, all kinds of brain holes have been thought of by them.

But after a series of simulations, they all abandoned it.

Even if they don't use mortise and tenon joints, those gaps will still exist, which is a congenital defect in the material and has little to do with the way it is made.

Make them quite bald.

They couldn't figure out how the ancients managed to be waterproof for a long time when the hull was full of gaps and the keel had to be connected to the hull.

This is simply black technology.

As for this question, Ren Yan just glanced at his group of 'stupid students' very casually.

Speak slowly in a very ordinary tone:

"Since you can't do it with one layer, you can't make it into two?"

"Two floors?!"

Everyone in Class 9 was stunned, and instantly felt even more confused.

Double-layered hull, can this thing really be achieved?

How heavy does this weigh?!

And, most critically...

Are two layers really waterproof?

Aren't there still the gaps that should exist?

In the next moment, the facial features of everyone in Class Nine were crowded together again.

They felt that their teacher was using a rather teasing tone, and said to them very well:

"Teasing you~~"

Made, I want him to know what Piff's Wrath is!

Class 9 secretly thought in his heart...