Chapter 52: shipbuilding!

　　 black oil is Yan Changwu’s masterpiece, it is a black oil with a strong odor, called creosote, the product of coal dry distillation.

　　 Coal dry distillation is one of the important processes of coal chemical industry. Refers to the process in which coal is heated and decomposed in isolation of air to produce coke (or semi-coke), coal tar, crude benzene, coal gas and other products.

There is a coal mine in Tainan, and Yan Changwu has the knowledge of coal retort. He needs coke to make iron. The coal tar obtained by coal retort contains a lot of creosote oil, which can be used as a preservative. Then the coal tar is added in a gelatinous state. It is made of pine resin to increase the viscosity and mixed with hair. It can be applied to the interface of the hull, while the ship board is directly coated with coal tar and resin as an anti-biological coating, which can resist the erosion of ship maggots.

　　 The bottom wood of the new ship is directly immersed in black oil, so that the wood can eat enough oil, and it can last a long time after being launched into the water.

　　 Yan Changwu looked at the work of the workers and expressed satisfaction!

　　 He asked Yan Shisan, the manager of the Yan House, "have all the benefits for the Spring Festival sent down?"

　　 Yan Shisan said respectfully: "It has been verified, and it is correct. The hired workers thank the Lord Overseer for his gift!"

In the world, there is a small institution in Yan's house called the "supervision room", which is acted as the supervisor and family member of the Yan's house. It specializes in checking the situation of the payment. For example, the army pays and the government distributes food. All the rewards and foods issued by the government and Yan , There are also things that the people sell to the government. They are specifically responsible for verifying them. If they are not right, they will settle accounts with the parties.

　　 The current mechanism is not bad, and the people in the supervision room are not able to handle it well, because if it fails, as their "house servants", Yan Changwu can kill them!

　　 Besides, we are pirates. The pirate’s favorite way is to invite people to the Dragon Palace as a guest. If you dare to deceive labor and capital, it is natural to blame labor and capital.

In the Ming Dynasty, it was really not a matter to punish disobedient servants. The government didn’t care when the master wounded or beat the disabled servants. Even if the servants were killed, as long as the power was big enough, the government would have the most meaning. In the far southeast mansion, who Yan Changwu wants to punish, who calls the sky should not, and the earth is not working.

　　 But the servants don’t need to worry or be afraid. Yan Changwu has a clear distinction between rewards and punishments. There must be reasons for rewards and punishments. He is not moody, but he pays attention to evidence.

Domestic servants are well paid and there are channels for improvement. As long as they work in the mansion for a long time, Yan Changwu will select the best and send them to the administrative center, join the army, do business, manage the manor and factory, etc., and they will get advanced training. Accompanying training to adapt to the new position is written in the family rules!

　　 Everyone is rushing, everyone doesn't want to do bad things.

　　...

　　 There are two docks in the dock area. In addition to Beigang No. 3, there are also two small ships squeezed into another dock for maintenance.

The navy with a dry dock can conduct regular inspections and repairs through the hull below the waterline. As far as the long-term planning of a fleet is concerned, it is very important to arrange dry dock repairs to repair ships, and the ships are well built, plus Regular maintenance can be used safely for 50 years or more (not always immersed in water and sometimes sealed for more than ten years before entering the water again), poorly built and poorly maintained ships will collapse within a few years, especially by ships The ship eroded by maggots disintegrated in three months.

　　 In terms of docks, Yan Changwu has actually become the world's second best, even the recognized maritime powers of the Netherlands and France can't match him! (The British built the dry dock in 1495, and the French did not open the first dry dock until the 18th century. Sweden was in 1724, Denmark was in 1739, and the United States was in 1833.)

　　 Then there is no dry dock for the maintenance of ships of various countries, such as the wealthy Dutch, even sending the ship with the cargo to the owner, or towing it directly ashore for maintenance, which is troublesome.

　　...

　　 After arriving at the dock in Beigang, Yan Changwu went straight to the Kaohsiung Shipyard without stopping!

The exact thing is that the carriage does not stop, and he also rides horses, but in the ruled area, horse-drawn carriages are used to come and go everywhere. Western-style four-wheeled carriages (the kind that can steer freely) are adopted. At this time, shock-proof springs are already available. , It’s very comfortable on the carriage, and it’s great to have a rest while running a horse!

　　 Kaohsiung Shipyard is the most important shipbuilding base of the Southeast Military Mansion. The shipyard is magnificent and magnificent. At the same time, the construction of three Class VI warships is almost complete!

　　 On the dock outside the shipyard, the three new warships have completed launching, outfitting, and sea trials. They have been delivered to use and are parked near the shipyard's dock.

　　 Tier 6 warship: It is an agile three-masted sailing warship with a deck of artillery, 18 artillery pieces, and 4 rear artillery pieces on the upper deck, with a displacement of 450 tons. There are about 180 members and the cost is 25,000 taels of silver.

　　 This is also the first batch of warships produced by the Southeast Prefecture, a total of twelve ships.

It is specially used for cruising battles. There is no cargo compartment, so it is very fast. In fact, its origin is a Fogate clipper. It is slender and streamlined. It has excellent sailing ability and flexibility, and can get rid of it. The pursuit of pirate ships and enemy navy.

　　 Fogate’s clippers are equipped with artillery and become a five-tier sail cruiser and a three-masted warship. They are mainly used for attacking maritime merchant ships and ocean-going cruises, and the main ship serves as the front-liner.

　　 The smaller Clippers are the Tier 6 warships of the Kaohsiung Shipyard!

　　It is not easy to build sail warships. Except for the warships that are under construction, there are many inland warehouses in the slipway. Iron products, masts, sails, artillery, and reserves are all prepared in the warehouses, ready to be used.

　　 Shipyard was first selected. Beigang was the initial landing site, but there was not much room for maneuvering, and it was close to Penghu and faced the mainland. Therefore, the shipyard was located in Kaohsiung Town, which has the largest deep-water port.

　　 Kaohsiung Port is located in Kaohsiung Bay at the south entrance of the Taiwan Strait. Kaohsiung Bay is a long and narrow bay with a length of 12 kilometers and a width of 1-1.5 kilometers. The entrance is only 100 meters wide. The shape resembles a pocket. The inner harbor of the bay is wide and deep, with calm waves and a natural harbor.

　　 There is a port, the slipway and warehouse are built, and the ship is ready to be built.

The design of shipbuilding must finally take into account the shipbuilding material-wood. After all, the carrying of heavy artillery (usually pressing the hull) and firing (recoil force will eventually be offset by the hull) will affect the wooden ship itself. The elastic structure in the present generates strong pressure, UU reading www.uukanshu. Com is eroded by wind and waves, and attacked by ship maggots. For warships, it is also required to have a strong shell to withstand artillery fire, and it is very particular about all aspects of wood.

Oak is the best wood for shipbuilding. Most Western sailing warships use oak to build their hulls. Dry oak is durable, has strong resistance to blows, and has less wood chips. Although shamrocks sometimes use thick slabs under the waterline of elm, Or, Cuban mahogany and Indian teak are also used to build warships, but oak is always the most important shipbuilding material.

Ancient Chinese shipbuilding mainly used camphor wood (a large amount in Hainan, Taiwan and other places) wood, such as nanmu, the hardest wood is not used in shipbuilding. The first thing it requires is corrosion resistance. As the saying goes: sun exposure for thousands of years Pine, blisters ten thousand years of camphor.

　　 Shipbuilding wood must have good toughness, high tensile strength, too brittle to be unusable, and low shrinkage rate. It cannot be said that the volume changes too much after soaking in water and before soaking in water (everyone understands the reason).

As for why you can’t use wood that is too hard, such as ironwood, which is known to be invulnerable, let’s take this example for the time being. When we process it, we just cut the wood and make the wood sawer crying wet. The five saw belts take turns while sawing. Grinding, a tree hurt him for a day, and it couldn't be sawed. The tree hardly got any nails in it, and it cracked when the nails were hard nailed in, or the nails were bent and broken, and nothing could be done.

　　 Therefore, good wood may not be able to build ships. Use good wood that is thick and straight, and only needs to meet the above conditions, and the hardness is moderate.

However, Yan Changwu’s new warship did not use camphor wood. He did not have the supply of oak, and he could not get teak for the time being. After being proficient in shipbuilding, the red-haired Banbarents worked tirelessly to find cedar. Tough and corrosion-resistant fir in the mountains of northern Fujian!