USS Nimitz, bridge command room. Pen % fun % Pavilion www.biquge.info

Time passed little by little, and everyone was expecting to find the Soviet submarine hidden at the bottom of the sea, but, until now, nothing!

"Our anti-submarine aircraft did not search for suspicious targets under water." Miller said: "There should be two possibilities, either the Soviets' submarine is gone, or our Groton miscalculated, and there are no Soviets nuclear submarines under the water." ”

Miller believes in the advanced technology of the US Navy, since he has been busy for so long and has not found an underwater submarine, it can only mean that there are no submarines of the Soviets at all!

Putting down his cigar, Jonathan shook his head: "No, I think, there is another possibility. ”

Another possibility? Miller looked at Jonathan, bewildered.

"This is the newest nuclear submarine of the Soviets, this nuclear submarine, the silence performance is so good that our existing anti-submarine power, it cannot be detected." Lieutenant General Jonathan said.

"How is this possible? The submarines of the Soviets have always been noisy, and their propellers do not have advanced processing technology. Miller said.

"If it was before, it would never have been possible, but now, it's different." Jonathan looked at Miller and looked at each other, and his eyes could tell a lot.

Damn the island nation! This country, which the United States supports, turned against the water in the end, causing the United States to lose a lot! If there is the technology of the island country, it is completely possible for the USSR to improve the nuclear submarine!

"Last year, we noticed that the Soviet Union had newly launched nuclear submarines, and the shape of the propeller had changed greatly. Jonathan continued.

For a submarine, the tail propeller is the biggest secret, you can see a variety of existing pictures, when the submarine is launched, the tail propeller is wrapped, in order to prevent the leakage of propeller parameters, for technologically advanced Western countries, as long as you see the shape of the propeller, you can guess the underwater sound characteristics.

Miller frowned: "If that's the case, it could be our mistake." ”

If you can't get the underwater sound characteristics, you won't store it in the database of the sonar system, and when the sonar system is working, it may filter out this faint sound as a normal sound! Therefore, during the Cold War, the confrontation between the US and Soviet submarines was very important, that is, to obtain the underwater sound signal characteristics of the other side!

"Perhaps, there are no Soviet submarines underwater, but if there is, it is a great threat to us, the Oscar-class nuclear submarines of the Soviets, equipped with SS-N-19 anti-ship missiles, are designed to attack our aircraft carrier formation, and we must not take it lightly!" Vice Admiral Jonathan said: "I suggest that an all-round scan be carried out immediately, first of all, to ensure the safety of our fleet!" ”

"Yes, order all anti-submarine aircraft to go out and throw active sonar buoys! All warships, turn on their sonar and conduct an active search! Miller immediately gave the order to his own aircraft carrier formation.

And the Kitty Hawk on the other side also conveyed the order at the same time.

The US Navy has long since eliminated anti-submarine rockets and does not have the ability to carpet bomb like the Soviet Union, but it would be a big mistake to say that they have nothing to do with extremely silent submarines.

Surface ships, against underwater threats, have enough means, for example, using the ship's own sonar and turning on the active mode!

All warships, except for small patrol boats, are equipped with sonar, this is generally installed in the front, also commonly known as hull sonar or bulbous bow sonar, in fact, the bulbous nose is a special ship-type head structure designed by modern ships in order to reduce wave resistance, there are a lot of turbulence to bring strong interference, affecting sonar work, so it is not suitable for sonar shroud, the real sonar shroud is to go down to the keel and make a streamline, and the hull is smooth and excessive to reduce the impact of turbulence, The sonar base array is installed in this sonar shroud that protrudes deeper than the keel.

And inside this shell, there is the sonar base array of the cylindrical array, this kind of sonar has two ways, active and passive, in later generations, these two methods can be completely integrated into the same base array, and it is still separated.

Generally speaking, passive sonar is used to listen to underwater sounds, while active sonar is used to locate the target, track and fire control after discovering the submarine, and bind the torpedo with firing data.

And now, by order of the Supreme Commander, all sonars, are turned on in active mode!

After all, the noise of surface warships is far more than that of underwater nuclear submarines, at least 20 decibels higher, so surface ships are easy to be found by underwater submarines, but it is not easy to find underwater submarines.

Turn on the flashlight, I don't believe I can't find you!

In this case, the size of the warship will also play a key role, because the aperture of the integrated sonar column array at the bow of the warship varies greatly according to the size of the hull, with small and medium-sized surface ships only 1 to 2 meters, while the diameter of the integrated sonar array of large surface ships may reach more than 4 meters. For example, now, the sonar on the bow of the Nimitz has a diameter of more than four meters! When using the active mode, the range of action on the underwater submarine can exceed 20 kilometers!

Anti-submarine arrays, lined up, as if combing the sea, all the warships, turned on their own active sonar, penetrated the seawater, scanned the silent world underwater, if there is, must find out!

At the same time, all anti-submarine aircraft, including anti-submarine helicopters, took off from various warships, threw active sonar buoys according to their respective demarcated areas, so to speak, within a radius of 100 kilometers around them, all of them searched for the area!

"Americans are crazy people!" Inside K-146, Nirgaev clenched his fists. Turning on active sonar in such a grand way is simply fearless!

If it's in times of war, if it's hard, I'm not afraid! The active sonar of the other side is a flashlight one by one, which light is strong, which is a large warship, even if it does not apply anti-ship missiles, it can be killed with 650 mm heavy torpedoes!

And, obviously, the aircraft carriers of the Americans also turned on active sonar! Nirgeyev could not suppress his impulse and wanted to shoot a torpedo to beat him, however, he did not receive the order to open fire.

The Americans have a problem, see how you cope! Fortunately, I am guarding against the Americans!

"Urgently dive to one hundred and fifty meters." (To be continued.) )