Thump thump.
Yang Dingtian walked over and asked," What's wrong?”
"Sonar detected an abnormal sound, about three kilometers away, but we're not sure what it is.”the sonar officer said quickly.
Unsure?
Yang Dingtian frowned.
This was still considered a shallow sea area. The underwater environment was complicated and the ocean noise was very loud. Of course, it was also possible that a submarine from some country had slipped in.
"Pass down my order. Prepare for level one battle."
Military matters could not be sloppy at all. Yang Dingtian immediately gave the order.
"Yes."
Lin Sanbao and the others immediately responded.
Sob, sob, sob.
In the next second, a sharp and ear-piercing battle alarm sounded.
"Hurry up."
"Return to your seat."
"Remove the safety."
After a month of hard training, everyone had already familiarized themselves with their respective duties. They immediately returned to their posts and entered combat mode.
The cannons, missile launchers, and rocket depth charge launchers were immediately deactivated and loaded with ammunition.
"Which point?" Yang Dingtian came to the front of the sonar screen.
" Fifteen degrees to the south-west, right here. Sonar detected an abnormality, but it disappeared very quickly.”The sonar technician pointed at the screen and said," There's too much interference. We can't determine what it is.”
"Move closer."
Yang Dingguo's world order.
There was a sonar detection device on Boat 681, but it was not a good one. It was a small Tamir-11 mid-frequency hull sonar purchased from Mao Xiong. The detection range was only about 3 kilometers, and it was also easily affected by ocean noise.
"Yes."
The helmsman responded and immediately changed direction.
Pushed by four high-power diesel engines, Boat 681 cut through the waves and approached the sea area where the abnormality was found.
One second.
Two seconds.
Five seconds.
At this moment, a light spot suddenly flashed on the sonar screen, but it was not very clear. It disappeared after a few sizzles.
This was the case in the shallow seas.
The noise of the ocean was very loud, which had a great impact on the outdated sonar detector.
Captain, look..." the sonar officer said.
Before he could finish his sentence, Yang Dingtian, who had turned serious, interrupted him," Don't look. It's a submarine."”
He was a top-level submarine-hunting submarine commander.
What was a submarine-hunter for?
As the name implied, it was a submarine hunting machine.
Although the signal detected by the sonar was not clear, the countless killing experiences he inherited from the system told him that it was an unidentified submarine. However, the exact location had yet to be determined.
A submarine?
Lin Sanbao and the others 'expressions changed.
It was obviously not the Fire Country's submarine that was acting so sneakily.
And this was already the Fire Country's territorial waters, yet a foreign military submarine had run in. The slightest carelessness could lead to war.
"Speed up and get closer."
"Yes."
"Fire two rocket depth charges, southwest direction, distance 1.6 kilometers, set depth 30 meters.”
"Yes."
After a pause, Yang Dingtian continued," Give me the water chart."”
"Yes."
Lin Sanbao, who was standing next to him, immediately took out the water chart of this area.
What was a water chart?
To put it simply, it was a map of the ocean drawn using the temperature, salinities, density, tides, thermocline, phonocline, reef distribution, and other factors of the sea.
What was the use?
The sea was more dangerous than ordinary people thought. There were all kinds of undercurrents and hidden reefs on the seabed. Large ships could not travel as they wished. They were all sailing according to the established safe routes.
For warships, the influence of water was even greater.
For example, the density of seawater would affect the course of torpedoes and submarine-launched missiles, thus affecting the accuracy of the attack.
There was also the Seawater Cliff, which was feared by submarines all over the world. It had encountered a sudden change in the density of seawater. The density of the upper layer was high, and the density of the lower layer was low.
The consequence of this was that the buoyancy of the seawater would decrease sharply, and the submarine would immediately fall to the bottom of the sea. Once it exceeded the limit of diving depth, the huge pressure would instantly flatten the submarine, and there was almost no possibility of survival.
This was also the reason why the foreign warships would think of ways to enter the Fire Country's waters. Most of the time, it was to measure the important information of the water level.
Whoosh, whoosh.
Just as Yang Dingtian was checking the water chart, the remaining five-unit 1200 rocket launcher had already opened fire brazenly. Two rocket depth bombs tore through the air and shot out.
。。。
On the other side.
In the deep sea ahead, a huge black shadow was moving quickly. It looked like a terrifying deep-sea beast, making people tremble with fear.
It was a submarine.
The sturgeon class attack submarine belonging to the Seventh Fleet, Tuna.
This was the main nuclear submarine of those guys during this period.
It was 89 meters long, 9.56 meters wide, and had a displacement of 3860 tons (water surface standard). Its surface speed was 15 knots, and the fastest underwater speed was 26 knots. Its maximum diving depth was more than 300 meters.
It was equipped with four 533mm torpedoes. In addition to launching MK48 torpedoes, it could also launch Sablok anti-submarine missiles. It could carry a nuclear warhead with a maximum range of 55 kilometers.
Some later models were equipped with Harpoon AGM-84 anti-ship missiles, as well as Tomahawk BGM-109 cruise missiles for land attack and anti-ship.
What were they doing in the Fire Country's waters?
Of course, it was not a sightseeing trip.
Previously, during the naval battle between the Fire Country and the Annan Empire, the foreign devils had been greatly shaken and felt that there was a need to understand.
After all, the Annan Empire had used the warships that they had retreated from. They had died rather miserably, and they did not have much face.
Therefore, the high-ranking generals of the foreign devils had decided to send the latest Tuna over. Firstly, it was to test the Tuna's long-distance capabilities. Secondly, it was to collect information on the waters of the Fire Country, and also to take a look at the situation.
Submarine command module.
At this moment, Major Smith was leisurely holding a coffee cup with a relaxed expression." Have you recorded the sound signature of that little thing?”
The electronic equipment on the submarine was the most advanced in the world and they had long discovered that there was a Fire Country's warship in the sea ahead.
However, they didn't care about the small toy that had a displacement of a few hundred tons. They could knock it over directly, let alone a torpedo-guided missile.
"I've noted it down. It should be the latest missile ship that the Fire Country has equipped.”the captain replied.
"Missile boat? What a laughable thing."
"Sinking it is only a matter of minutes.”
"Let alone a missile ship, the entire Fire Country's navy is just so-so.”
A few foreigners spoke arrogantly, their faces full of disdain.
Their guided missile destroyer, nuclear powered aircraft carriers, and nuclear submarines added up to more than a hundred. Those little things were not worth their attention at all. The Fire Country's navy was two times stronger than theirs. It was even worse during the war.
"Other than risking their lives, what else do those Fire Country fellows know?”Smith smiled contemptuously. Then, he picked up the cup in his hand and wanted to take a sip of coffee.
However, at this moment, something unexpected happened.
This book comes from：m.funovel.com。