I was a village chief in a primitive society

"Wow!......"

The boat has been parked on the river, very smooth and without any bumps.

Yuying was still very nervous and kept following Su Bai closely, not daring to leave immediately.

Even though she was in the cabin now, Fox-Eared Girl was still worried about whether the ship would sink.

In addition, are you also worried about whether there will be attacks by wild animals? All in all, there are all kinds of worries

"Don't be afraid, I'm here."Su Bai grabbed the other person's hand tightly.

Just now, he just let the fox-eared girl hold the corner of his clothes, and now he wants to give the other person more peace of mind.

She was very timid originally, but now she is very scared on the river. normal

"Yes, witch."Yu Ying felt a lot more relieved in an instant.

The pink fox tail that was originally hanging down gradually became normal and no longer looked timid.

"Wu, it looks so beautiful inside. It’s the first time I’ve seen this kind of decoration. Yanhua sighed.

Niujiao Niang was particularly excited and kept running around in the cabin, observing the surrounding environment.

"If you like it, you can take this boat next time you go to Haiyu Tribe."Su Bai said gently.

"Wu, can I go out with this ship to test the time?"Yanhua kept blinking her red eyes.

Niujiao Niang looked very hopeful, as if her eyes were shining with anticipation.

"Hahaha....."Su Bai smiled heartily, feeling that the other person's eyes were shining, and continued:"You like"

"Yes, I will arrange my own affairs and follow the boat out. Yanhua said seriously.

Although she can follow him out, she still has to do the work that needs to be done.

"very good."Su Bai said gently.

Sha Lan looked at the tables and chairs and sighed:"Witch, these tables and chairs look small, but they are long and can seat many people."

"Yes, so that the ship can carry a lot of people."Su Bai nodded.

This is the characteristic of this ship. It is mainly used to carry people. If you want to carry goods, you need to make a special ship to carry goods.

Making a ship to carry goods is simpler than making a ship to carry people waiting for me. There are many, and since it has been successful once, it is not difficult to make it again.

"It turns out to be like this, it’s really amazing. Sha Lan couldn't help but sigh.

"Wu, how can this ship move forward? Just let it float on the river by itself?"Yu Ying said doubtfully.

The fox-eared lady was already relieved a lot, but she still held Su Bai's hand tightly.

"Yes, why didn’t I think of this? Wouldn’t the ship be too slow if it floated by itself?"Yanhua also reacted immediately.

"Although the boat floats on its own, there is also a rudder to control the direction, and most importantly, there are sails."

Su Bai paused and continued:"You must know that once the ship has sails, it will be different and it will move very fast."

This time the ship was launched into the water for a test run, and the sails were not set up. This is why everyone was confused.

"Wu, what is a sail?"Yu Ying's soft voice sounded.

"The sail is a large piece of animal skin standing in the middle of the ship. As long as the wind blows, the sail will form a bowl shape and catch the wind that blows over. Su

Bai looked at the river and continued:"Because the sail is standing in the middle of the boat, and the boat is on the river, there will be no way to borrow force, so the boat will be carried away by the wind.""

Because the boat needs to use the force generated by each side of the sail to move in the windward direction. The positive force on the windward side (thrust) and the negative force on the leeward side (pull) combine to form a resultant force.

Both forces are Acts in the same direction, so some ships need sails

"So that’s it, but what does this sail look like? Yuying asked curiously

"Wu, can you take us to see the sails?"Yanhua said curiously.

She was very interested in listening to it just now. She felt that this ship was really amazing.

"Of course, after we finished reading this, we went out to look at the sails and sailed for a short while."Su Bai nodded.

Although there is no big problem for the boat to stand on the river, I still want to see what it looks like when moving forward.

In this way, we can more intuitively see if there are any other hidden things in this bed. Problems can be found and solved as soon as possible

"Tap tap tap....."

Su Bai and others stayed in the cabin for a long time, checking the seats and storage functions.

As well as the rudder to control the ship, the anchor hanging next to the hull, and some life-saving tools.

These life-saving tools are very simple to make, just pieces of wood, all tied to the side of the hull.

Whenever someone falls into the water, this piece of wood tied with vines will be thrown down

"He asked people to put up the sails and let the ship move forward for a while."Su Bai ordered

"yes."Rong immediately asked the apprentices to do it.

These apprentices had been studying beside him for a long time, and it was not difficult to raise the sail.

After a while of operation, the sail was erected by several people. This large piece of sail was made of It is sewn from animal skin.

If you use linen, it will be damaged too easily. Using animal skin will be stronger and will not crack easily even in a big storm.

"Is this the sail? It’s really a big piece!"Yu Ying raised her head and sighed.

It was the first time for Fox-Eared Girl to see such a thing. The structure of the entire ship felt very magical.

It was like......Just like a horn on the river, this horn also has a large piece of animal skin on it

"The larger the sail, the larger the force-bearing area, so the ship will move faster."Su Bai explained

"It’s really amazing, so big and beautiful. Yanhua also sighed.

Niujiao Niang was completely impressed by this thirty-meter ship. She liked it very much. She liked it very much.

"Wu, you are so smart, we would never have thought of this. Sha Lan said in shock.

The cat-eared girl was so impressed that she was simply a creation of God. How could an ordinary person have thought of this and be so thoughtful?

Every aspect, no matter the size or the details, is exquisite. How much wisdom does it take to achieve this?

"These will take a long, long time to be studied, and our tribe can be said to be ahead of other tribes."Su Bai said with a smile.

The development of ships is naturally a long history. At least it was impossible to appear in the primitive era.

The most common ones are only wooden rafts, which will take thousands of years to mature.

After all , A sailboat is a ship that uses wind power to move forward. It is an ancient water vehicle after boats and rafts. It has a history of more than 5,000 years on the earth.

"......"The girls were all surprised and speechless.........................................

"Second update, please support and customize."