Chapter 1457: 1457 - - 39-42 Lectures on Ships

Jin's lecture on ships continues.

"There are two types of water resistance applied to a ship: , , and . < as the force expended by the ship to create waves, and < as the stickiness of the water."

Jin's knowledge is shallow and full of holes because he got it from model magazines when he was building a model ship, but no one else in this world can explain it so systematically.

"<> is the resistance of the low-pressure area behind the ship that tries to pull the ship back."

"......?"

I can't go into any more detail than that, as Jin also has a vague recollection of it. Fortunately, however, all of the < listening were practitioners.

"When you move your hand in the water, if you spread your palm out in the direction of movement, the resistance will be greater, and if you twist it 90 degrees, the resistance will be less, right?"

They were convinced by these explanations.

"Yes, I think I understand."

With no time to waste, Jin continues his explanation.

"The stability of the ship is ......."

"The shape of the bottom of the ship is ......."

"The structure of the hull can be found at ......."

All of these were taken from model magazines, but both Marcia and Prince Ernest were listening intently. And Hannah, Elsa, Licia, and Rodrigo.

"Well, your talk is quite informative, Jin-dono.

"Onii-chan's explanations are easy to understand.

"I haven't heard your explanation in a long time, but I understand a lot about the ship."

"I hope that's the case. ......"

Jin looked at Prince Ernest, who was writing down what he had heard on a piece of leather paper.

"Jin, then you must be very careful when you build a large ship."

"That's what I think."

In this respect, Jin, Elsa, and Rodrigo had experience in building the in the Shoro Empire.

"The bigger it gets, the greater the forces on the various parts of the hull. This is good, right?"

"Yes. The effect of the waves.

"The shape of the bottom is also important."

In this way, Jin explained all the basics of boats that he could think of.

After an hour and a half of explanation, he took us to Marcia's workshop to show us the actual ship.

"See how smooth the surface is?

"Oh, that's right. <

Ordinary wooden boats are made of water-resistant, rot-resistant wood, without any surface treatment or preservative treatment, but not here.

"Wood gets moldy and rots when it's wet and exposed to air," he said.

"Oh, really?

"That's right. If it had been submerged in water for a long time, it wouldn't rot.

The fact that a sunken shipwreck retains its shape is also an indication of this.

"That's why we treat them so they don't absorb water, and we paint them so they repel water," he says.

"That's why they have to be treated so they don't absorb water, and painted so they repel water, especially if they're big."

We don't want large vessels that can't be easily built new to rot.

"I won't go into the details of how to do that ...... because it's a bit of a Marcia contraption."

But Ernesto laughed and nodded.

"Yes!　Of course. Everyone has their own way of doing things."

"Catamarans and trimarans work well for smaller vessels, but for larger ones, the strength of the joints becomes a problem.

"Oh, because the force exerted on each part of the hull by the waves is different, isn't it?

"That's right."

It seems that Prince Ernest had understood the content of my earlier lecture.

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Princess Rieschen seemed to have lost her patience and was chatting with Licia.

Hannah, however, looks serious so as not to miss any of Jin's explanations. Princess Rieschen looks a little sad.

* * * * * * * * * * * *

The last step is to be taken on a boat.

The first one is Cygnus, the former winner.

The boat can just barely fit three people if it's packed.

"Wow, it feels so good!

The Shiratori (Cygnus) runs around the bay with the sea breeze on its face.

"Your Highness, please remember how it sways, how it moves, how it accelerates..."

Marcia said to Prince Ernest while running Cygnus at about 80% speed.

The winning boat, number 6, is still there. He did not give her a name.

"No, I know it's different somehow!"

The three-hulled boat is a little shorter than the catamaran, which makes the boat more maneuverable.

Also, the longer distance from each < makes the period of swaying longer.

"And the acceleration seems to be good too."

"Yes, that's the effect of this ......<."

"I see. But it would be bad if algae or seaweed got entangled in it.

Marcia is a little surprised when Prince Ernesto points out the weak points of the screw in a short time.

"...... Yes. So we have to be careful where we run.

"If it's a small ship, we can remove it manually if it gets tangled up, but I'm not sure about a large ship. ......"

Prince Ernest was thinking about such a thing.

* * * * * *

"Jin, Marcia, Elsa, Hannah, Licia, thank you. Thank you, Reiko, Edgar, Arrow, for all your help.

At 11:00 a.m., the two high lords bid farewell to Jin and the others.

"Don't worry, I'll have Elias take you home."

Princess Rieschen says with a smile. She then says a few more words to Hannah.

"Good luck, Hannah. We will meet again.

"Take care, sister Ries!"

In front of Marcia's workshop, the carriage and guards arranged by the Marquis of Firenziano are all there.

"<>, I will now escort the two of you to the capital city of Borgia."

Jin thought that he would take <>, but when he listened carefully, he heard that an airship would come to pick them up at the guest house.

"Well then, I'll leave you to it."

Jin, see you later!

Thank you, Jin!

The Marquis and their Royal Highnesses waved their hands out of the carriage window, and Jin responded.

Then the carriage started to move slowly and left before those who saw it off.

"He's gone, isn't he?"

"Hmm..."

"I'm kind of sad."

Yeah. ......

Yes. ......

The time spent in the company of friends will one day come to an end.

Marcia, Elsa, Jin, Hannah, and Licia expressed their loneliness in their own words.

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