In the Shaobo Lake Naval Army's village, Han Duan looked at the two brand new golden-winged ships, and a hint of excitement surged into his heart.

After spending such a great price, today, I finally saw the effect.

With the Golden-winged Ship, even if he encounters the navy of the court, he can still have the power to fight.

"The new ship's captain is fifteen zhang and four zhang wide. In addition to the oars, slurry and boatmen equipped on the ship, it can also carry 500 soldiers." Master Zhao, the manager of the shipyard, accompanied Han on the large ship and introduced him as he walked.

The ship has three floors, up to six feet high. The soldiers are placed on the bottom two floors, and the uppermost floor is a lookout and a command platform. There are thirty-six long oars on both sides, which can be pushed by paddles during combat, which can maintain extremely high flexibility.

There are two rowing oars at the stern of the boat, which are for multiple oars to roam together to control the direction of travel. There are three crossbows on both sides of the deck. There are female walls on the battle shed, and there are mergings on the female walls for crossbowmen to shoot archery.

There are five feet high on the front, back and left and right of the deck. On the top of the poles, a square stone weighing hundreds of kilograms is fixed.

"How deep is this boat draught?" Han Duan looked around and thought it was good in other places. The only thing he was worried about was the draught problem.

Boats with shallow drafts have poor resistance to wind and waves. On the contrary, boats with deep drafts and low center of gravity are more stable and less likely to overturn.

"About nine feet."

One foot in the Southern Dynasty was about twenty-six centimeters, and nine feet was about two meters and three meters. Such a draft depth had exceeded that of other ships of the same size.

Master Zhao explained: "Originally, the draught was only eight feet long, but the two ships filled with earth and rocks under the wooden boards of the horizontal cabin to keep the ship stable, so the draught was slightly deeper."

"This method is good." Han Duan nodded and praised.

Unexpectedly, in this era, shipbuilders already knew the function of ballast.

Then he asked, "Master Zhao, how many ships can be launched in the yard before March?"

Master Zhao said: "There are now 1,500 craftsmen in the yard, and the number of large and small ships has increased to eight. If you are rushing to work, you can build ten more golden-winged ships, other small ships such as Mengchong, fighting ships, snatch ships, and whistle ships before March, and you can build forty or fifty ships."

"There are twelve golden-winged ships, which is enough in a short time." Han Duan whispered, then turned to Master Zhao and said, "There are five golden-winged ships behind that don't need to install sticks and crossbows. I want to install cannons."

The most frightening thing about the Golden-winged ship is the four slapped sticks. The enemy ships were shattered with one blow. The smaller ships didn't even dare to get close to them, but Han Duan actually wanted to cancel all the slapped sticks.

Master Zhao thought he had heard it wrong at first, and after asking again, he asked in confusion:

"Master Lang, the bed crossbow is not very useful in water battles, and it is no big deal if it is not installed. But if you are uneasy to pat the pole, what will this ship use to fight against the enemy ship?"

"Without the stick, I have more powerful artillery." Han Duan smiled and said, "Just leave the position free, you will know then."

"Arson?" Master Zhao frowned. After thinking for a long time, he couldn't figure out what this thing was, but Han Duan said in person, so he could only follow the instructions.

In fact, at this time, his artillery did not even have a single sign of the eight characters.

Han Duan never thought of casting a steel cannon far beyond the technological level of this era. All he wanted to cast was a copper cannon, and he only needed a smoothbore cannon in front.

China has a long history of bronze casting, and casting bronze cannons is not technically difficult, but the problem that Han Duan is currently facing is: there is not so much copper material.

In the past, the copper material mined from Shanyin copper smelting was basically cast into copper coins, and less than 2,000 kilograms were transported to Guangling. If you want to cast a siege cannon of more than 1,000 kilograms, such a little copper material could barely be cast into two doors.

Moreover, copper is money nowadays, and using copper to cast cannons is really expensive.

According to the current copper price, a pound of copper costs more than one hundred yuan. A copper cannon worth more than one hundred thousand yuan alone costs more than one hundred thousand yuan. Even if there are so much copper, he is reluctant to take it out to cast the cannon.

So after thinking about it, he decided to cast iron cannons directly. Theoretically, there should be no problem with the molten steel frying from Yeshan iron and metal to be used for casting cannons, but whether it can be used must be tested.

Of course, you have to make models and models before casting cannons.

The master and Han Jing and Han Huer who specialize in making wooden models in the craftsman workshop were called, and it took several days to make a one-to-one cannon model.

After having the model, the subsequent processes such as cast iron cannons, quenching, tempering and tempering were all carried out in Yeshan. After Han Duan explained all the precautions to Han Jing and Han Huer, he rushed the two of them to Yeshan.

After explaining the matter of gunpowder and artillery, Han Duan still has no time to do it. The newly formed spies and anti-spionage institutions are all newcomers, and they don’t know anything. They have to ask him to guide them one by one. Of course, the intention is also obvious - this force is controlled by him and no one else can be involved.

There are many affairs at the end of the year, and the person in charge of various departments rushed back to Guangling one by one. Han Duan had to inquire about the account review, year-end summary, and next year's planning, etc. Although it was a little more complicated, it was very necessary.

In this busy life, time soon arrived at the first year of Taijian.

This New Year in Guangling City is more lively than in previous years. There are no refugees and homeless people in the county, and adults and children are full of joy.

For the common people today, they are already very satisfied if they can have food, food, clothing, and a house that shelters from the wind and rain. They still have some money to buy New Year's goods in their arms.

Only Han Jin, the old man of the Han family, seems to have little joy.

Without the ancestral hall and without clan members, the top priority of the New Year's ancestor worship cannot be held. In Han Jin's words, this is "great unfilial". It would be nice to not cry loudly.

But Han Duan no longer cares about listening to his father's nagging.

After the first day of the year, he was busy inspecting everywhere.

He walked through the navy, the boat yard and the places where the various troops were stationed. After the eighth day of the lunar month, Han Duan went to Yeshan.

Han Jing and Han Hu'er have been to Yeshan for about 20 days. I don't know if they have created a model of casting cannons. He is still waiting for the cannons to be cast and installed on the Golden-winged ship, and will be used when attacking Huaiyin after March.

After a daytime voyage, Han Duan and his party finally arrived in Yeshan in the evening.

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After only more than a month, more than half of the ten-mile-long city wall in Yeshan has been built. At this speed, it can be completed in less than three months.

On the spacious ferry, when Han Duan saw Han Jing and Han Hu'er, he didn't care about saying hello to Niu Xin and others, and waved to them anxiously and asked, "Has the cannon model been created?"
Chapter completed!