The best material for shipbuilding is steel, and the ships of this era were all wooden. In fact, the wisdom of the ancient Chinese people is infinite, although there is no high-temperature steelmaking furnace now, but the steel is still refined, but it cannot be compared with modern steel.

In modern times, iron is made in blast furnaces, that is, iron ore is reduced in a blast furnace and melted into pig iron. The basic production process is to smelt iron ore into pig iron in an iron-making furnace, and then use pig iron as raw material to make steel by different methods, and then cast into steel ingots or continuous casting billets. Blast furnace ironmaking is the reduction of iron ore in a blast furnace and smelting into pig iron. Iron is stored in nature in the form of compounds, especially in the form of iron oxide. Theoretically, any ore containing iron elements or iron compounds can be called iron ore; Blast furnace ironmaking is the reduction of iron ore in a blast furnace and smelting into pig iron. The basic production process is to smelt iron ore into pig iron in an iron-making furnace, and then use pig iron as raw material to make steel by different methods, and then cast into steel ingots or continuous casting billets.

At present, iron-making technology is still mature, and there is no need to start refining from iron ore, but to melt the iron and further purify it, and then make steel. Because the temperature does not meet the requirements, the steel is not very pure, but it can still be used on the hull, and these ships are not all made of steel as the hull, the whole is still wooden, and a layer of steel is wrapped to strengthen the hardness and thickness, and sailing in the sea can also increase the weight of the hull and avoid overturning in crosswinds.

The largest main hull is 268 meters, 28 meters wide and 26 meters high. This auspicious number has also been carefully considered and calculated. The main ship has three floors above and two floors at the bottom.

The two-story bottom of the ship is divided into dozens of watertight compartments by a watertight partition wall, spanning the entire ship. Watertight compartments prevent the ship from sinking if it has an accidental hole. Even if any two or three of the compartments were filled with water, they would still be able to move, and in the trial, up to five compartments would be filled with water to keep the boat afloat.

Half of the first floor was actually under the cabin, and the exposed half of the ship had a gun hole every two meters, and a gun was pressed inside. The gunner could see through the transparent thickened glass holes in the hull.

The main ship uses coal as fuel to produce steam to propel the steam engine to work, and there are 30 double-ended boilers and 6 single-ended boilers on board, and the top speed can reach 60 kilometers per hour, which can be said to be the best and fastest ship in history since ancient times.

The first and second floors are the dormitories and canteens for the crew and soldiers, as well as activity rooms, study rooms, etc., and even a martial arts training ground.

The third floor is a luxury suite, which not only has a large kitchen, a study, a living room, an activity room, but also a game room. The main ship is the special ship for the emperor and queen, and it is naturally the best.

The other ships were a third smaller than the main ship, with only 16 double-ended boilers and two single-ended boilers, but they could still reach a top speed of 50 kilometers per hour.

The main thing is that generators are installed on these ships. The main ship is naturally brightly lit, and the other ships are just lighting. But it's much better than candles and oil lamps, all that is needed is coal.

In the manufacturing process of these 20 ships, many of the raw materials such as steel and coal needed were tributes from other countries and regions. Forced by the deterrence of the Great Sui military parade, the items of the Sui tribute were all according to the list issued by the Great Sui, and no one said that I did not have what was missing, but they were all frightened and breathless: for the things that his region has, the Great Sui Emperor knows more than himself! actually pointed out where you have to dig this thing, where you have to find that thing, so scared that they both trembled, and they didn't dare to put a fart, so they sent it early, and even exceeded the required amount.

San Lang was naturally very satisfied with their acquaintance, and gave back some vegetable seeds, which moved them to death. In fact, San Lang's idea is very simple: you can plant it yourself, and the province will always come to cry poor!

What the? Afraid that they will be full and rebellious? Do they have artillery? Is there explosives?

Saburo said that he was not afraid of their means at all. The eldest lady said, distant friends and close attacks, he is afraid that there is no reason to wipe out these small countries of them, oh no, it is in his hands.

San Lang and Mu Fushu's ideal is: the Great Sui becomes the suzerain, and it is best to include half of Asia, and if it is farther, it is not necessary, and it is difficult to bring the team when there are too many people......

The emperor and his entourage arrived at the dock at the end of the next morning. Yuyang Wharf has been built very tall, not only civil wharf but also special wharf for the imperial court. The shipyard is about two or three miles away from the wharf, one is that it is a large place and sparsely populated, and the other is close to the wharf, and the materials that need to be transported are easy to transport into the shipyard.

The emperor's "special ship" was not the first to be built, there were already three completed ones in front, and the craftsmen were skilled before they began to build this big ship. Liu Gang, who can make automatic boats, has also arrived here, and when he sees these big ships, he dances with his hands, and his obsession has to eat and sleep, and he also puts forward a lot of wonderful ideas, not only in shipbuilding, but also after seeing the electric light, he soon put forward a lot of useful insights into the layout of circuits. R1152