Chapter 70 Progress of Catamarans

“I have welded many ships, bloated cargo ships, long Panamax ships, and huge Capesize ships, but I have never welded this type of ship.” Cong Ju said to Qin Tao while walking.

“Below it are two compensated hulls, with a high-raised main hull in the middle, and a special V-shaped structure underneath the hull.” Cong Ju said.

"This is called a high-speed wave-piercing body. This unique structure we designed can, on the one hand, reduce the resistance of the water and greatly increase the speed of the ship. On the other hand, it is to improve the wave-resistant performance of the hull. By increasing the frequency of swaying To reduce the lateral rolling of the hull." Qin Tao said: "The welding of the two pieces is the difficult part."

"Yes." Cong Ju said: "My body is relatively thin, so it would be most convenient for me to get in and do the welding. However, Master Zhao refused. He insisted on doing it by himself and asked me to guide him. It was too narrow inside. He could only take off his outer coat and go in wearing single clothes. He couldn't wear protective gear, so he took a piece of UV-blocking glass and went in to weld it. Every time he came out, his whole body was black."

Cong Ju was very moved. She was deeply moved by the dedication and dedication of the workers here.

“Uncle Zhao, why are you still working so hard at your age?” At this time, the two of them had already walked to the dock. Qin Tao saw Zhao Changshui and immediately criticized him.

"Cong Gong is here to be our master. She gives us guidance. We have to do the real welding. Otherwise, if Cong Gong leaves in the future, we will be blind." Zhao Changshui said: "Besides, Cong Gong is a girl, she can't get in there and suffer, she is our guest."

Cong Ju shook her head helplessly. Of course she knew the care of these old masters.

“By the way, is the welding quality okay?” Qin Tao asked.

"Well, we have checked it carefully." Cong Ju said, picking up something from the side: "If you are worried, you can check it yourself."

If you build a ship for a foreign country, they will definitely send special quality supervisors. However, this catamaran passenger ship is a navy project after all, and a special leather company was set up to sign the agreement in the name of civilians. As a result, the Navy cannot send military representatives to the factory, and the quality is completely controlled by the shipyard itself.

 In the past, in shipbuilding, the quality was supervised by the shipyard itself, so everyone was very comfortable.

Qin Tao looked at the thing. It was a long iron wire. At the end of the iron wire, a small mirror was tied. This small mirror could detect the place where a person's head cannot reach, and then observe the quality of the weld.

 All welding standards are in accordance with what Cong Ju said, without any reduction. If there is a problem, it must be reworked meticulously.

Qin Tao looked at the shaking lens: "The wisdom of the working people is endless."

“Now, all that’s left is the engine and waterjet propeller. Once these equipment are installed in place, we can weld the deck above.” Zhao Changshui said: “Taozi, when will these equipment arrive?”

Shipbuilding is different from car building. A special engine compartment cover can be opened on the car shell, and the engine can be installed at any time. The hull is welded, and the ship's engine is relatively large.

 So, generally during welding, a huge gap needs to be left on the deck to lift the engine. After the engine is installed, the hole can be welded shut. For such a small boat of several hundred tons, the deck is simply not welded until the engine and matching waterjet propeller are installed, and then welded.

If the process is wrong, there will be big trouble. For example, Asan built his own aircraft carrier and launched it several times. In one of them, he cut the top deck and inserted the engine inside. Of course, only Ah San can do this kind of cool operation.

"I'll keep urging, it will probably take a while..." Before Qin Tao could finish his words, a Steyr trailer roared over on the road in the distance.

 After the opening of the country, there is a huge gap in all walks of life, so they are all introducing foreign technology for development.

The same is true for the truck industry. They originally wanted to introduce Mercedes-Benz, but the Germans were very arrogant and imposed very harsh conditions. Therefore, the inspection team had no choice but to divert to the small country of Austria and bring back Steyr trucks.

 This is a heavy-duty truck like the old Huanghe, with advanced technology and low fuel consumption. After its introduction, it immediately became the best heavy-duty truck in the country. After spreading on the land of the motherland, most trucks decades later still use Steyr technology.

This is a full trailer. A large wooden box is pulled on the main vehicle, and a similar box is pulled on the trailer behind. For a full trailer that can be overloaded with hundreds of tons and is known as the train skin on the road, this weight is just drizzle.

 Qin Tao's heart started to beat.

 These two big boxes must be MTU diesel engines!

“Sister Cong Ju, do you know who is the fastest person in the world?”

 “Heike Drexler.”

"What?"

 “West German sprint and long jump champion.”

“Sister Cong Ju, I didn’t expect you to be a sports fan, but it’s not her.”

"Who is that?"

 “Cao Cao.”

"What?"

 “Say Cao Cao, and Cao Cao will be here.” Qin Tao said.

Cong Ju still didn’t laugh. It seemed that she had told a bad joke.

The Steyr truck drove directly towards the slipway. At this time, Cong Ju focused all her thoughts on the two MTU engines.

The world's most famous marine diesel engine, even on cargo ships of hundreds of thousands of tons, this engine is still useful. Although it cannot be used to drive the ship, it can drive a generator set for the ship.

 It’s just that this is the first time this kind of engine is used on a speedboat of several hundred tons.

 When the car stopped, Guo Jiamin jumped out of the passenger seat.

“Chief Guo, you acted too fast, thank you.” Qin Tao said excitedly.

"It happened that a batch of MTU diesel engines arrived. We coordinated with the railway. The railway was very generous and gave you two units from their order." Guo Jiamin said, "This is your first time to install it. For this kind of diesel engine, don’t worry first, read the manual of this diesel engine to avoid installation problems.”

“No, crane, where’s the crane? Get ready to lift the engine! Get in the car, open the box, and we’ll install the engine today!”

 The engine is the largest. If the water jet propeller cannot be in place, there is no need to wait. Once the engine is installed, the deck can be welded.

 The wooden box was opened, revealing a sky-blue engine with eight huge cylinders on each side, which looked very spectacular. Two huge turbochargers stand at the front, like two giant snails.

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 (End of this chapter)