The siren that resounded throughout the ship forced Wang Yu to give up his plan to fill his stomach. He put the noodle bowl back on the table and hurried back to the bridge.
The siren sound comes from the ship's siren early warning system.
This is a device that will issue a warning when a siren reaction occurs within 75 nautical miles of the battleship. It was also one of the key equipment that humans in the previous world could use to protect themselves when facing sirens.
Siren warships have some special properties, that is, full-range radar stealth. Their hulls, or the interference existing around the hulls, seem to be able to absorb or disrupt radar waves, making radar in the traditional sense useless.
This particularity of the Siren battleship also made the response to the early stage of the Siren crisis in humanity extremely embarrassing.
The enemy can't be found, but the enemy can launch sudden attacks from all directions. It is indeed a desperate situation - the feeling of human beings at that time is just like the four-wheel drive brothers game. As a result, all the four-wheel drive brothers in your family were killed within the first three minutes. The feelings of the big ships after the sudden death were the same.
The weapons that mankind is proud of could not be used, and their armor was discarded in the battle at sea. The naval power at that time lost more than 80% in the first wave of sirens. Humanity had to retreat to the land and defend itself. coastal.
This dilemma lasted for several years.
Until one day, the human research department analyzed the wreckage of the Siren that was destroyed offshore, related some characteristics of the Siren fleet, and developed a "ship-based Siren early warning device" that can give an alarm when the Siren is approaching and Prompt the approximate direction.
From this moment on, the human fleet was no longer passively beaten like headless flies. At least it had the ability to be prepared when facing the Sirens' attack.
Through the early warning device, Wang Yu found that the place where the siren reaction occurred was probably in the 305 direction of the battleship - this is the way to indicate the direction at sea. A simple understanding of this number is to take true north as zero degrees, the ship as the origin, and turn clockwise The required degree of target orientation.
The 305 direction means that the Siren is located about 35 degrees west-northwest of the battleship.
Wang Yu subconsciously glanced to the northwest.
Of course now he couldn't see anything.
To put it bluntly, the siren early warning device is just like the radar warning receiver. It only provides a vague position. To put it bluntly, it is just a reminder and cannot obtain the specific position, distance, heading and other information of the siren.
After all, this device is only a passive early warning device, not an active detection device. It can tell you which direction there is a siren reaction, which is already very good - in the face of those warship commanders who complain about this equipment and cannot get more specific information, there is no need to go to the battlefield. The researchers retorted.
It's much better than being beaten passively before, so I don't need a bicycle.
Wang Yu stopped the noisy alarm.
He thought for a moment whether to stay away immediately or to take the initiative.
Then he thought that if the siren chased him, his speed would make it impossible to escape, and it would make it difficult for him to use the battleship's firepower in his combat position. So since he couldn't escape and had to fight, he might as well get close to the siren first and use some of the battleship's special features. Equip yourself, get ready, and take the initiative.
After careful consideration, Wang Yu made up his mind.
He turned the helm to about a quarter full, and slowly adjusted the ship's course.
The battleship tilted slightly on the sea and turned to the direction where the siren reaction appeared.
Then Wang Yu slightly increased the speed of some battleships, reaching eighteen knots.
Although there is a siren reaction in front of the battleship, we don’t know how far away the siren is. It is very likely that the siren is seventy-five nautical miles away, or it may be twenty nautical miles away.
If it were an ordinary battleship, it would probably have to be ready to face the enemy by now.
Because enemy ships may poke their heads out from the edge of the sea level at any time to launch an attack.
But for this battleship...
The reason why the Annapolis is called a super battleship, in addition to the comprehensive strengthening of basic parameters such as firepower and armor, is mainly because of the black technology carried on some ships specifically to deal with Sirens.
What’s more interesting is that these black technologies basically come from the Sirens themselves. In other words, this is called using Siren’s technology to defeat the Sirens. The so-called learning from the barbarians to control the barbarians is to let the people from the Navy’s scientific research department play. Understood.
While observing the sea level in the direction of the advance, Wang Yu estimated that the distance might be about the same after moving for more than an hour in the direction where the siren reaction appeared.
He walked to the electronic control panel on the side of the bridge with ease, and then operated a few times to activate a special rotating device on the top of the bridge.
"Radar, activate!"
The bridge information system gives prompts simultaneously.
[Surveillance radar in use]
There are a lot of siren technologies on Annapolis, such as the "Siren" control system mentioned before, which is one kind, and what I want to talk about now - the siren surveillance radar, is another kind.
The "Siren Surveillance Radar" is based on the "Siren Early Warning Device" and borrows some new ship-based equipment developed by Siren Technology - finally getting rid of the shortcomings of the early warning device that can only passively warn, allowing human warships to It has the ability to actively detect the specific location of the Siren warship.
The principle of Siren surveillance radar is completely different from that of traditional radar. The principle of Siren surveillance radar is to detect the special "field" of Siren battleships. Therefore, the detection is not limited by the size of Siren ships, ranging from Siren battleships to Siren destroyers. It will be detected within the maximum detection range of forty nautical miles - and the closer the distance, the more accurate the detected Siren warship information is.
And this device also has a more powerful function, which is real-time detection without blind spots within a range of twelve nautical miles.
As long as the Siren battleship approaches within twelve nautical miles, the Siren surveillance radar can unconditionally reveal the location of the Siren. Whether the Siren is hiding in stormy weather with extremely poor visibility, or hiding behind an island, it will Discovered accurately and without delay.
However, this surveillance radar cannot be said to be perfect.
Nothing in the world is perfect.
The cost of this thing is too high and it cannot be mass-produced. Therefore, in the navy of the previous world, only a very small number of ships were equipped with this kind of surveillance radar.
Moreover, due to material limitations, the Siren surveillance radar cannot be turned on for a long time. A single startup can only maintain detection for about forty-five minutes at most, and there will be a cooling period of several hours after each startup.
And due to the immaturity of some technologies, surveillance radars cannot be stopped manually every time they are started. They must be automatically stopped after running for an effective time.
This also makes commanders who have the idea of "constantly switching the radar on and off" - such as Wang Yu, very disappointed.
Therefore, the warship commander who uses the Siren surveillance radar must have enough awareness to guess how far away the Siren fleet is. Otherwise, if nothing is found after turning on the radar, then the radar will be turned on in vain. .
Now, after the warship had advanced nearly twenty nautical miles towards the direction where the siren reaction appeared, Wang Yu turned on the radar, which ensured that he had the greatest possibility of discovering the siren's location.
The radar was on, but no Siren warships were detected.
Wang Yu's face remained calm, which could only prove that the sirens were farther away than he thought. But there was no problem. The distance between the battleship and the sirens should be getting closer. Within the duration of the radar, he should be able to detect the sirens. Ren battleship.
Time passes minute by minute.
Wang Yu stared at the general direction of the siren reaction on the early warning device while constantly correcting the course of the battleship, and at the same time stared at the information that might appear on the surveillance radar at any time.
The surveillance radar at the highest point of the battleship was constantly rotating, detecting clues of the Siren battleship.
Finally, after fifteen minutes of arduous waiting, the surveillance radar finally discovered the Siren battleship.
Siren detected at maximum detection range.
In other words, the Siren fleet appeared forty nautical miles away, and was in the direction of the battleship.
