Great warships

Chapter 84
The power of 6800 horsepower is transmitted to the reducer, and then reaches the water jet propeller through two output shafts.The turbulent river sprayed from behind, and the catamaran began to accelerate.

On the berth, countless people looked around, watching the catamaran passenger ship continue to speed up.

"My dear, it's even faster than the anti-smuggling speedboat we built last time!"

"Of course, how powerful is the anti-smuggling* speedboat, and how powerful is this catamaran?"

"Look, it's starting to turn! The hull is not tilted!"

If it is an old single-hull boat, it will definitely roll when turning at high speed on the sea. If it is too strong, it will capsize. However, due to the wide hull of the catamaran, there is no obvious tilt of the hull at all. .

"Yeah, it's really safe!"

Amidst the discussion among the crowd, Qin Tao drove the catamaran and continued to run wildly, and the data on the speedometer kept beating.

Thirty, forty, forty-five!

The front suddenly became clear, and the catamaran passenger ship driven by Qin Tao had left the river and arrived at the mouth of the sea.

The water surface here is more open, and it is more convenient to test.

The pieces of the two catamarans are stuck underwater, the structure in the center of the pieces is exposed, and four streams of water are ejected from the tail, which looks very spectacular.

46, 47, 48!

Qin Tao's heartbeat is also gradually accelerating. He has promised that this catamaran can run to fifty knots. Moreover, this is also related to the subsequent construction of missile boats, and there must be no problems.

Accelerate, continue to accelerate!

Forty-nine, fifty!

When he saw this value, Qin Tao's heart was finally relieved, and he had reached the design speed!
Can you continue to speed up?

There should be potential.

The two engines roared inside the two panels. Because there was no sound insulation, the noise could be clearly transmitted to the upper floor. However, to Qin Tao's ears, it sounded like a beautiful piece of music.

"Brother, why do you use knots as the unit of speed?" A voice came from behind.

Of course Nie Shiyu was going to be with Qin Tao, so when she saw Qin Tao running up to test, Nie Shiyu also followed.

A ship of this level can be operated by one person as long as the power system does not fail.After Qin Tao came up, Nie Shiyu came up, and Cong Ju was very curious and followed. Now, the three of them are standing on the cockpit, watching the blue sea in front of them receding quickly, Cong Ju is also very excited .

This is definitely the first time in the history of domestic shipbuilding for a ship with this speed, fifty knots!

Cong Ju was quite rare, she didn't know that the batch of anti-smuggling speedboats that Qin Tao built for Customs could also run to [-] knots.

"The knot was invented in the nautical age in the sixteenth century. At that time, there was no instrument for measuring speed. Therefore, a sailor came up with a clever trick, throwing the rope into the water, and seeing the length of the rope pulled out over a period of time, you can know The boat is speeding up." Qin Tao gave Nie Shiyu a popular science: "However, at that time, because the timekeeping was made of quicksand, it was not very accurate, and the rope had to be placed very long. In order to facilitate the measurement of the length of the rope, knots were made on it. , In this way, the ancient operation has been handed down, and the navy uses knots as units."

"Taozi, you know a lot." Cong Ju said with emotion. Although she has worked in shipbuilding for more than ten years, she really doesn't know how the unit of Jie came about.

"You'll know it when you go to college." Qin Tao continued to fool Cong Ju.

"Wow, 55 knots!" Nie Shiyu looked at the instrument and exclaimed excitedly.

"It seems that the design speed has been reached." Qin Tao said: "We can return to the voyage, and you are all stabilized."

The current catamaran is still a shell. After the interior decoration is completed, it will have to increase in weight, and it will be even heavier if it is filled with oil and fresh water.

Therefore, now it can reach 55 knots when it is empty, and it is safe to reach [-] knots when it is full of cargo.

Returning!
Qin Tao skillfully turned the steering wheel in his hand, and the four water jets at the rear deflected to one side in unison, pushing the passenger ship to turn.

Because of the water jet propulsion, it does not need to use a special rudder surface for its steering, as long as the direction of the water jet is changed, the boat can be turned.It is simply the same as the vector propulsion in the missile field.

The hull did not tilt too much, but Nie Shiyu and Cong Ju still felt the huge centrifugal force, and their bodies were thrown out to the outside. Thanks to Qin Tao reminding them, otherwise they would probably collide with the cabin on one side. on the wall.

The waves splashed behind, and a beautiful arc was drawn on the sea.

"This catamaran is really good. The stability at this speed is really good." Cong Ju tried to keep her body stable and said to Qin Tao.

"Of course." Qin Tao said: "And, with the use of water jet propulsion, it can also perform special movements, such as turning in place!"

As he said, Qin Tao pushed the engine on one side to the idle state, and the engine on the other side was still running at full power, and the steering wheel was killed. So, under Qin Tao's operation, the catamaran passenger ship circled on the sea , and the radius is still shrinking.

Splashes rose from the sea, forming a shrinking circular arc, just like the trajectory of moths to the flame, one lap, two laps, three laps, when the third lap, the catamaran passenger ship was almost circling Rotate with the center of the hull as the center of the circle!
Waves were drawn from the bow and stern of the ship, forming a beautiful closed circle, as if a dancer on the ice was performing.

"How is this possible?" Cong Ju's face was full of surprise.

Ordinary ships use the rudder to control the steering action, which can only be operated during the forward process. Moreover, the greater the speed of the ship, the higher the efficiency of the rudder surface.

It is absolutely impossible to turn around in place like this now. When the ship turns, it will lose speed and the efficiency of the rudder surface will decrease. Even if it can turn around, usually after two turns, the ship will lose energy.Unless it is pushed by a tugboat outside!
Now, this catamaran has broken this shackle, while turning in circles, the speed does not decrease!
"This is the magical function of the water jet." Qin Tao said: "With the water jet and the catamaran, you can play spinning tops on the sea! Alright, now let's change it!"

Qin Tao regained the power on one side, then let go of the rudder, and the catamaran sailed to the river mouth and returned to the shipyard.

Qin Tao didn't know that at this moment, on the coastal road, a Cherokee with the words "Customs Anti-smuggling" painted on it was parked beside the road. Two people stood there, holding binoculars in their hands, looking at the ship It took a long time to see catamarans playing acrobatics on the sea.

(End of this chapter)