Let you teach, you play games with the worst class?

As for the mortise and tenon that will be needed later.

The production team also came up with a new method, since the mortise and tenon of the keel cannot be used.

They simply started thinking directly with the way of thinking that Ren Yan had just taught.

Every mortise and tenon joint is joined with a small specially treated pin as much as possible, so that it can play a force-dissipating role while being precise connected.

They call it 'muscle'.

This kind of tendons will be spread throughout the inner and outer layers of the entire hull, and the force dissipation effect of one may not be seen, but if there are more of them, the effect will not be much worse than that of the keel.

This is a special structure that they racked their brains and finally came up with.

It looks like an ordinary ancient ship on the outside, but inside it is something different.

After some prototype tests, Class Nine believed that it would not be a big problem for the entire hull to bear a weight of [-] kilograms.

Xu Kai even recorded this structure completely in the shipbuilding sub-drawings,

With the deduction and calculation of the whole Class Nine, it is a realistic simulation. Although there is still no plank on the hull of the ship, the progress is officially on the right track.

In the following time, they were all busy with the problem of the hull.

Although from time to time, new problems will be born.

But they turned their minds around completely, did not encounter any real difficulties, and were still proceeding in an orderly manner.

And in order to really pass the quality test, they have to conduct a test every time they complete the splicing of a piece of wood.

The most done is the waterproof test.

For this reason, they also specially made a large bucket of sea water.

Only when the newly installed wooden planks can withstand 21 splashes of sea water without any water leakage, will they consider this piece qualified.

And will be assigned a unique mark.

Of course, this kind of test is only under construction. After the first floor is built, they will conduct an overall test.

But then they will be in the sea, and they are full of anticipation.

I am also very fortunate that the warehouse rented by Mr. Ren has a seawater shipbuilding area on one side, otherwise it would be a problem to let a half-built ship go into the sea.

Days, in such a situation with a clear goal, two days have passed.

Two days later, the bottom warehouse with a height of about one meter on the first floor was completely taken care of by Class Nine.

It has been glued and painted, and the measures of waterproofing, moistureproofing and insectproofing have been fully implemented.

On the side of the shipbuilding area close to the sea, Class Nine laid out a large number of rolling logs, propped up their half-built ship from high to low, and pushed the ship that gave them their expectations forward with a sound of concerted efforts. nautical mile.

When the waves splashed, everyone felt a strong sense of accomplishment.

After about a month, the boat built by their Class Nine finally went to sea.

Although it can only be regarded as an embryo now, it can be called a ship after all.

Apart from this sense of accomplishment, the rest of Class Nine is just worrying.

Worried about whether the ship can really float on the ocean as they expected.

The rope used to secure the boat has been tied to a corner of the warehouse.

Amidst the tension and prayers of Class Nine, time passed by every minute.

Even netizens and judges have some different emotions in their hearts.

They want the ship to float steadily.

Even though some of them objected to Ren Yan's plan to 'go to sea' before, this is still the case now.

But at this moment, they really hope that the ship will succeed from the bottom of their hearts.

These days, they have witnessed the efforts of Class Nine, and they don't want this effort to be wasted.

Even this kind of effort will bring hidden dangers to the future. '

But they still hope, and they feel in their hearts that the efforts of these children in recent days are 'worthy' of such success.

As for going to sea, it is different from the current emotion.

In the parent group, the parents who had been spanking and chatting for a long time also fell silent.

A large number of 'digital' users flooded into the live broadcast.

The General Administration of Education and Ding Guoxiang were also watching this scene intently.

Everyone has a little bit of anticipation.

Ren Yan also stared at everything in front of her.

Time passed by every minute and every second, as if everyone was holding their breath.

The whole warehouse seemed unusually quiet.

One point, two points...

Five points, ten points...

There is still no sign of being soaked inside the ship.

It wasn't until 45 minutes later that Class Nine gave out an excited cry.

The whole warehouse immediately became noisy.

Many students hugged the classmate next to them and sucked hard.

Such a long time of hard work was not in vain after all!

45 minutes is the main time frame of their test.

At the same time, this time is also the peeling time they calculated for paint and gum to fail in seawater.

As long as there is still no water seepage after this time, it can show that there is no problem with their ships as a whole!

It seems to be infected by Class Nine.

All kinds of netizens and judges also sent out heartfelt smiles.

In the live broadcast room, various bullet screens of [Ninth Class Niubi] kept flashing.

In the studio, the judges were not stingy in their praise.

However, after boasting, they found that something seemed wrong.

Why is it so long, Ren Yan, a teacher, doesn't mean to be happy for a long time?

Instead, he looked at Class Nine with indescribable sympathy? '

'I guess, what's the situation? '

Everyone was startled, and looked carefully at the 'small half' ship on the screen again.

Immediately afterwards, their smiles stopped, and changed into an extremely tangled look.

Damn, this boat seems to be missing something...

No wonder it looks so awkward...

At this time, Class Nine followed Ren Yan's eyes and seemed to be aware of this problem.

They looked at each other with dejected and speechless expressions, and then looked at Xu Kai in unison.

"Mad, where's the sail!

! ”

Chapter 285 Ren Yan: You actually want me to take the blame? ! 【Seek full order】

Yes...

It wasn't until this moment that Class Nine realized the problem.

The boat they're building now...

no sails!

Although all modern ships are powered by internal combustion, turbocharging and other driving means.

Even if there is no sail, you can sail away immediately.

However, the ancient ships did not rely on sails, but on waves? !

At first, they probably ignored this point because they didn’t have too specific a concept. The whole thing looked like a boat, so they didn’t think about power for the time being.

But now, as soon as they entered the sea, they felt distorted.

A wooden sailboat, but the most critical sail was forgotten, so can their boat be considered a success?

Everyone looked at Xu Kai together, and the direction of throwing the pot was already obvious.

'How can you, the chief designer of a ship, make such a lowly mistake? ! '

'How did you get the blueprints without the sails? ! '

"Although we also made mistakes during the construction, but this pot, you have to bear it~"

Looking at the eyes of his classmates throwing blame, although Xu Kai was quite shameless, he did not panic at all.

I saw him slowly returning to his work area, took out the general design drawing of the ship, and shook it out in front of everyone.

On the picture, a five-story giant sailboat is completely drawn, and all the internal structures are clear at a glance, although many details cannot be experienced.

But there is one thing, everyone can see clearly...

There are sails on the design drawing, and the mast for hanging the sails directly leads to the lowest cabin and stands on the auxiliary keel.

And the number is not small, there are seven giant masts, almost all over the best stress points of the ship.

"Did you see it! Ah?!"

"I have painted a sail!"

"If you want to blame, you have to blame the construction workers. You are usually asked to look at the design drawings, why don't you look at them?"

"This pot, I won't take it back!"

Hearing this, everyone felt reasonable, and silently turned their attention to Li Cheng.

This guy is a member of the construction team, and he is also mainly responsible for the keel project.

'Why are you ignoring an important building so close to the keel? ! '

'What are you eating? ! '

The meaning in the eyes of the students is very clear.

Li Cheng looked around and pointed to himself.

"You don't think I have to take the blame for this, do you?!"

"I can't!"

"Although I am a member of the construction team, my job is to be a cook~"

"I'm usually busy cooking for you, so I don't have time to do everything!"

"It's not what everyone arranges for work, what do I do?"

"If you really want to ask, you have to ask the person who assigned me the job, right, Li Qi?"

After finishing speaking, Li Cheng's gaze turned directly to Li Qi, and everyone in Class Nine immediately stared at him.

Li Qi blinked, with an innocent face:

"He can't blame me for this."

"I did look at the design drawings, but in order to pursue details, I only looked at the sub-drawings of each step, and the sails are not in my control."

"You have to ask the commander-in-chief~"

"Really, Wang Yu?"

As soon as the words fell, Li Qi slapped Wang Yu on the shoulder.

As a university tyrant, this guy knows a little bit about everything. During the construction, he not only took charge of a series of analysis work such as historical data calculation, but also served as the commander-in-chief of the construction incidentally.