Magi Craft Meister

Time is back a little, February 1st. The day the 'Granato' went into the water in the Empire of Shouro.

The place is the kingdom of Elias, Potlock.

"Marcia! You've made an amazing discovery!!

Marcia's father, Rodrigo, rushed into the store with tremendous momentum.

"And, Dad? What the hell is wrong with you?

Marcia on the face saying she doesn't know what it is, but Rodrigo takes that hand and pulls it.

"Well, come on! Because you'd be surprised, too!

Trying to drag Marcia as she was, Rodrigo left the store.

"Bacchus, Jeremy, please come back later..."

It was Marcia who could hardly say just that.

"... so, what is it, Dad"

Walking side by side, Marcia asked her father.

"Oh. You know I was doing research on submerged submersible vehicles, right?

A submerged submersible water vehicle is a tentative name for that method whereby the water vehicle as a propulsion method is not put on the water by more than half, as before, but is put all in the water to obtain propulsion.

"Yeah. There's a lot of waste of water wheel drive so far, so you can't get rid of it and use it to drive a big ship, right?

"That's right. And I found a revolutionary way!

"Heh... that's awesome!

Marcia also knows that her father Rodrigo has a genius flash. That's why I was able to design a double-torso ship.

"Here we are."

That was the dock where Rodrigo had recently tried all sorts of ship prototypes. Now there's no one else but the two of us.

There is a prototype ship floating about three metres long. The stern was literally fitted with a submerged water wheel.

"Yeah, I know my dad does a lot on this ship. But from what I've seen, nothing seems to have changed."

It was the beginning of Marcia's previous victory in the golem boat competition when she tried to rotate the boat, the same type of water wheel that was attached to "Swan (Signus)", into the water as it was.

Of course, I could not satisfactorily gain thrust in such a state.

Therefore, Rodrigo changed the shape of the water wheel… the bending method, size, etc. of the fin part, and repeated the experiment.

"Well, watch."

Rodrigo left Marcia at the dock and boarded the prototype ship. And spin the water wheel......

"Oh!?

Marcia opened her eyes. As the water wheel rotated, the prototype ship began to move to the side, not the front.

Precisely because the water wheel moved out sideways, the stern moved sideways as it did, and as a result, the prototype ship began to 'butt shake' as it circled around the bow direction.

"Hey, why?

If it moves forward or backward, I know. But I didn't know it would move sideways... And, Marcia, she caught an eye on the water wheel.

"... bent in a strange breeze?

The fin part of the water wheel was bent to twist.

"Have you noticed?... Nah, I was running around trying everything and it seems there was a rocky reef and I hooked up the water wheel. Then all of a sudden, the stern can swing sideways."

The fins with the eight pieces twisted, and it was like a screw.

"Keep it up and it moves sideways. Then if you bend the water wheel at right angles, you can move it back and forth!

Marcia shouted, realizing its efficacy.

"Exactly"

Rodrigo nodded loudly with a good grin.

Thus, they became involved in the development of the "new submerged water vehicle", or screw.

"Hmm, the number of fins seems to be low"

"Yeah, a lot's hard to balance."

Then a few days later, Marcia and Rodrigo worked on the development of a new 'submerged submersible vehicle'. It is of great help that Arrow, whom Jen improved, was able to use engineering magic, not to mention elementary school.

"Looks like you could use a little bending."

"Mm-hmm. A lot of bending makes water resistant, and if it's small, it's low thrust."

Thus, on February 6th, they finally developed the same object as the Screw.

Quickly, though Marcia and Rodrigo decide to try and attach it to the prototype ship.

"Hmm, will the axis hold a piece? Think about strength and make it a little thicker."

"Dad, the bearings are going to be difficult."

"Um, when I do this here... no!

That will be quite difficult to navigate.

"Oh...... if you had gin here!

Marcia comes out of your mouth.

I can't help it. It's been three days since the prototype screw was completed.

That's all, it's hard to attach to a ship.

At any rate, between the axis and the bearing of the screw, a gap is always necessary to reduce friction, from which water enters the ship.

I mean, it's just like having a hole in the bottom of the boat. I couldn't figure out a way to do something about this place.

I've been worried about that for three days. Even though Jen can do something about it, it is impossible for Marcia to talk about it.

"Marcia, I know how you feel. Maybe he even knows how to do this. But that's why we'll do it alone until we finish the prototype."

Marcia, embarrassed by Rodrigo, blushed and leaned down.

"Yeah... right. I'm sorry, Dad. Speak weak."

And two more days have passed, February 11th.

"This is it!

Finally, the day has come for Rodrigo's obsession to bear fruit.

"Dad, you did it!

That's close to what we call 'outboard aircraft' on modern Earth.

In other words, the screw and the golem drive that rotates it were to be made into one unit and attached to the stern of the ship.

There is no problem with the water resistance of this' outboard machine 'if you taste the material and structure. Reinhardt's "Lorelei" and underwater golems also exist in the golem boat competition.

However, its use was different from that of modern Earth.

In modern Earth, the direction of the ship's travel has been changed by changing the orientation of the outboard aircraft themselves, whereas the outboard aircraft was fixed to the stern and the steering was normally carried out in the cockpit.

It is either an outboard aircraft or a power unit use.

Still, the talents of Rodrigo and Marcia, who rowed this far for a short time and on their own, stand out.

"Your husband (My Lord), Mr. Rodrigo seems to have noticed the principle of the screw."

On the island of Penglai, this is the date on which the marker installation began in various parts of Ars.

"What?

"Coincidentally, I hooked the fins of the water wheel into a rock and bent them, and I realized that would generate lateral thrust or something"

"Ha, I see. Certainly."

On Earth, Jen thinks that it was the beginning of cutting off part of the spiral pump…

"They want to join the family..."

"If it were those two, you'd be well qualified."

"Right. Is the time... after 6pm? Potlock won't be at 3: 30."

So Jen decided to head to Potlock just now.

"Elsa, I'm bringing the two of you in, so please keep your voice to the other members. Just someone who can come."

"Mmm. Copy that."

"Reiko, let's go"

Thus, Jen and Reiko flew to Potlock at the transfer gate (Warp Gate).