After Lin Yuan finished speaking, he picked up the bathymetric pole from the boat, put it into the water, and then pointed at it and said to Chen Fei: "When I say stop, you tell me the reading of the wave Lang passing." ”

Chen Fei asked, "What is this going to do?" ”

Lin Yuan put down his watch and pen and paper, and said: "If you want to explain this, you have to start with the water pressure fuse, I plan to use the water pressure fuze mine to deal with the British transport ship this time, you know the water pressure, when you are just underwater, the water will have a pressure effect on you, this is the water pressure." ”

"But when you are in the water, the speed of movement is very slow, the pressure of the water on you is static pressure, when the ship is moving in the water, the boat has speed, it will push the water to move, so the water pressure will change, this change is the condition for the action of the water pressure fuse, but the water surface cannot be strictly stationary, there will be waves Lang, these waves Lang will also cause changes in water pressure, so we need to know the characteristics of the Lang pressure of the waves."

"When we understand the pressure characteristics of the waves, we can set the operating conditions of the water pressure fuze, do you know? The dynamic pressure caused by the ship is not linear, but unequal in size, and the distribution also has a certain law, we can set the conditions under which the mine should be detonated according to the difference between this pressure and the wave pressure, and the height of the wave Lang is the key factor to determine the water pressure. ”

Chen Fei nodded, and the two of them measured more than a dozen sets of data in this way, and when they measured the data, Lin Yuan also said to Chen Fei: "Do you know the way?" At present, the most effective means for non-triggered mines is to artificially create a signal for a ship, so that the mine thinks that a ship is coming, and it will detonate itself. ”

"However, it is extremely difficult to simulate the water pressure signal, and if you want to simulate it, you need millions of watts of power, so it is basically impossible to simulate the water pressure signal manually."

The two of them were busy for a while before going back, and after they went back, Lin Yuan sent two more mines, and the mine operator on the Beijing ship, Jin Siqin, came to Shanghai Port on a tugboat.

Lin Yuan immediately began the deployment of the task after everything was ready, first Lin Yuan set up the headquarters on the tugboat, and then held a meeting, at which Lin Yuan said: "Comrades, our operation this time, which can be regarded as the last paramilitary operation, our goal is to seize the metal ore in two British cargo ships, these ores are very important for national defense, and I believe everyone knows the importance of it, so I will not emphasize it." ”

"Now I will talk about the assignment of tasks, we are divided into three groups, the first is the mine-laying group, which is in charge of me and Comrade Jin Siqin, and the enemy ships will leave the port at eight o'clock tomorrow morning, and we will lay mines at two o'clock in the morning; The second is the diver group, which is in charge of Comrade Chen Fei, when the explosion occurs and the enemy ship sinks, you immediately go into the water and hang the tugboat cable on the hook of the container; The third is the tugboat group, which is in charge of the comrades on the tugboat. ”

"When the divers give the signal to lock the hook, you don't care about anything, leave the port at full speed, because the British army has three warships here, including a Majestic-class battleship, so the combat capability should not be underestimated, once you meet them, do not resist, if they propose to board the ship for inspection, you can cooperate, even if they want to detain you, do not be afraid, I will try my best to rescue you."

Lin Yuan looked around and said, "If there is no problem, let's dismiss the meeting." ”

At two o'clock in the morning, Lin Yuan and Jin Siqin came to the channel with two mines, both of which are sunken mines, which can be sunk to the bottom of the sea when used, like a spider waiting for prey with a large web, the charge of the sunken mine is generally relatively large, and the charge of these two mines weighs 200 kilograms.

There are three kinds of mines, sinking mines, anchor mines, drifting mines, if this charge is placed on the anchor mine or drifting mine, it has been able to make the mine among the ranks of large mines, but in the sinking mine, such a charge can only make it the little brother in the family, the real large sinking mine, the charge is more than 700 kilograms, and some can even reach a ton.

The weight of this mine is as high as more than 500 kilograms, and people will certainly not be able to carry such a weight, so when the Beijing ship set off, it installed a mine dropping device on the dinghy to put the mine into the water.

Lin Yuan felt that the time was ripe, so he said: "We can lay mines, let's start now, I have already reconnoitred the ship type information of the transport ship, and according to the relevant formula, I have calculated the water pressure that this type of transport ship will generate when it moves in the water." Lin Yuan said and handed a data sheet to Jin Siqin, with data on the environmental water pressure.

Jin Siqin looked at the data, opened the control box at the tail of the mine, gently rotated the cam inside, set the conditions for detonation, and said: "Okay, this time the mine can ensure that only the transport ship will be blown up." After Jin Siqin finished speaking, he removed the cover of the mine, revealing the long shape of the mine.

Laying mines on ships requires little for the shape of the mines, unlike air-dropped mines, which usually have a hemispherical head glued to them, and the head is wooden, which will be smashed at the moment of entering the water, so as to protect the mines. Jin Siqin pressed the operation button, the mine slowly entered the water, if the mine fell uncontrollably to the bottom of the water, it would produce a great impact force, so the delivery system has a hinge to pull the mine, so that the mine slowly touched the bottom of the water.

Jin Siqin felt that the mine had sunk to the bottom, so he let go of the hinge, and then released the next one, and when the mine was dropped, Lin Yuan did not let the dinghy return to the tugboat, because the tugboat was likely to be targeted by the British warship, if the British were on the ship, how to explain the mine delivery system?

So Lin Yuan took the dinghy into a relatively remote harbor, and then rented a civilian boat, came to the mine drop waters, the sky gradually brightened, from time to time with ships through the mine waters, the water pressure caused by the ship is related to the speed of the ship and the underwater shape of the ship, now these ships are too small, so not enough to detonate the mine.

Lin Yuan looked at his watch, and at eight o'clock, a message came from Lin Yuan's communicator, which was sent by the comrades who monitored the transport ships in the port: The two British transport ships had left the port, entered the channel, and headed for the place where the mines were laid.

Lin Yuan raised the telescope in his hand and looked in the direction where the ship came, only to see a familiar figure appear in the channel, it was the Blackbird that he saw that day, the Blackbird knew nothing about the danger underwater, and it slowly sailed into the range of the mine.

The water pressure sensor on the mine instantly felt the change in water pressure, and its sensor sent the change signal to the signal amplifier, and the amplifier sent the amplified signal to the processor, and the processor ignored this signal at the beginning, because there were too many signals sent in, and soon, the follow-up signals were also sent, and the processor began to get excited, because this series of signals was too similar to the detonation signal he had set in advance!

The processor immediately sent out an initiating signal, and a current was amplified layer by layer, and finally entered the initiator, and two hundred kilograms of high-energy explosives were detonated in an instant!