Southeast of the Okinawa Islands, Ryukyu Trench.

Two hundred and fifty meters below the surface of the sea, a submarine about 80 meters long and 11 meters wide, with a dark body, like an elongated cigar, with a streamlined command platform, retractable head horizontal rudders, and X-shaped tail rudders, is slowly moving forward at a speed of six knots along the ocean current.

In the command center, Hua Guofeng stared intently at the two bright spots on the fire control computer screen.

If the "Sailfish" commanded by Hua Guofeng is a sharp sword, then the two nearby "Qinchao"-class conventional submarines equipped with Stirling engines produced by the Swedish company Kaukum are ancient bronze swords dug out of the ground, and they should have entered the museum a long time ago.

"Captain, the No. 1 target boat has floated, do you want to follow?"

"Follow behind target boat No. 1 and keep a close eye on target boat No. 2." Hua Guofeng walked behind the helmsman, "Control the course and speed, and when the depth reaches fifty meters, activate the underwater camera, let us see what this new friend looks like." ”

The "Sailfish" quietly followed the Japanese submarine and floated towards the surface.

A month ago, when he was transferred out of the "094-13" nuclear submarine and served as the captain of the "Sailfish", Hua Guofeng felt that he had been "mismatched", and he sulked for half a month. Because "094-13" is the most advanced attack nuclear submarine of the Republic, "Sailfish" is just a marked conventionally powered submarine.

It's just that the "Sailfish" is not an ordinary conventionally powered submarine.

In the army, there is a high-performance composite battery "shaped battery" that has just been equipped with a watch

How significant can eight kilowatt-hours per kilogram of geology be?

Diesel combustion has a geothermal value of 40,000 kilojoules per kilogram. Gasoline burns with a geothermal value of 44,000 kilojoules per kilogram. Each kilogram of "shaped battery" is capable of storing 28,800 kilojoules of electricity. 72% diesel land. 65.5 percent of gasoline land.

The geothermal efficiency of the direct injection internal combustion engine is about 50 percent. The energy conversion efficiency of superconducting motors is more than 70%. The geodynamic propulsion system composed of "shaped batteries" and superconducting motors can completely replace the geodynamic propulsion system composed of diesel, internal combustion engines and ordinary batteries. Makes conventional submarines truly silent.

Equipped with a 400-ton "shaped battery" and a 7,500-kilowatt superconducting motor, the "Sailfish" is equipped with a 7,500-kilowatt superconducting motor. After a full charge. Able to dive for 296 hours at a maximum speed of 37 knots. sailed 12,000 nautical miles in twelve days; If the submersible speed is reduced to six knots. You can dive for 112 days. Sail 10,000 nautical miles. There is no need to surface for ventilation during the entire patrol mission.

The Sailfish can be charged at any port equipped with special charging equipment. If electricity is obtained from the civil grid. The charging time is twelve hours; If there is a dedicated high-power power generation equipment. It only takes two hours. Those conventionally powered submarines equipped with conventional systems must go to military ports with supporting logistical support capabilities to replenish liquid oxygen. or special fuel. It is difficult to obtain logistical support in commercial ports.

The geodynamic system, which consists of a "shaped battery" and a superconducting motor, has another advantage.

Apart from an emergency diesel engine, the Sailfish submarine had no conventional power equipment and therefore no major source of noise. Combined with a pump-jet propulsion system, the noise level of the Sailfish was reduced to an unprecedented level.

When sailing at a speed of six knots, its own noise is less than seventy decibels; Even if the speed is increased to 37 knots, it is only 98 decibels, which is far lower than any kind of conventional submarine, and even much lower than the "Virginia" class nuclear submarines of the Navy of country M.

The outer surface of the "Sailfish" boat is covered with a sound-absorbing material up to 35 centimeters thick, which shortens the detection range of the enemy's active sonar by two-thirds. Coupled with very low self-noise, the Sailfish became the quietest submarine in the world.

。 In addition to having a strong "heart", as well as a sufficiently large "lung", the "Sailfish" also has a well-developed "brain".

The highly automated operating system and the jobs saved by eliminating conventional power equipment have reduced the number of officers and men of the "Sailfish" to 34 people, and only eight people are usually needed to control the entire submarine. A highly integrated detection, search and fire control system, coupled with a central computer running 250 million times per second, gives the Sailfish the sharpest response speed. In an engaged state, the Sailfish was able to track thirty-two targets while controlling eight torpedoes to attack four of the most threatening targets.

A good horse with a good saddle, a warrior with a sword.

"Sailfish" was armed with the most advanced weapons, in particular, heavy torpedoes.

The new electric torpedo uses a composite battery as a power source, and the firing range reaches 35 kilometers in 70-knot high-speed mode; In low-speed mode of 45 knots, the firing range can reach 65 kilometers. A torpedo head filled with 250 kilograms of high-energy explosives is enough for one torpedo to damage a destroyer, or two torpedoes to damage a cruiser, and three torpedoes to incapacitate an aircraft carrier.

Everything made Hua Guofeng happy, and he felt that the "Sailfish" was more like a super submarine in science fiction.

Two months ago, after the "Sailfish" was officially put into service, Hua Guofeng and 33 other officers and men had a new mission. Within five months, the "Sailfish" will take part in three joint military exercises, and its performance will be fully affirmed.

More than 20 days ago, Hua Guofeng led a boat to sea.

Their mission was to track down the Japanese Navy's second improved "Kinshio"-class submarine that was being trained off the coast of the Okinawa Islands.

So far, the "Sailfish" has tracked those two Japanese submarines for eleven days.

Three days ago, after completing its last mission, the "Sailfish" used active attack sonar to "greet" the Japanese submarine. As a result, more than 20 "Sea Hawks" of the Japan Maritime Self-Defense Force, eight P-3C "Orion" anti-submarine patrol aircraft, and hundreds of sonar buoys were recruited. The "Sailfish" did not leave, still following the Japanese submarine, taking the opportunity to find out the anti-submarine tactics of the Japanese submarine.

Two days ago, another submarine of the "Tide" class arrived.

If a fight breaks out, Hua Guofeng is confident that he will take out two "pro-tides" at the same time.

"Captain, it's fifty meters."

Hua Guofeng came back to his senses. "Turn on the exterior lights, enter from behind the enemy boats, and let's take a closer look at the appearance of the little devil's new submarine."

A blurry figure appeared on the screen of the fire control computer.

Nearly 80 meters long and 10 meters wide, the Japanese submarine was like a huge whale, quietly floating in the sea at a distance of 25 meters from the surface. The Japanese submarine was testing a newly equipped non-penetrating optoelectronic mast, as well as satellite communication equipment, and did not find the "Sailfish" appearing behind it at all.

"It's like a sea manatee. Scratching through the bottom with the command platform, dozens of little devils are finished. ”

"I can't bear it." Hua Guofeng smiled faintly, "Go around from the left, reduce the speed to the second section, and see if the little devil can hear the sound we make." ”

The "Sailfish" slowly turned and reached the left side of the Japanese submarine.

"Captain!" The sonar chief suddenly shouted, "There is contact." ”

Hua Jianfeng frowned slightly. "Discovered?"

"It's not. At ten o'clock, the distance was far away and faint. ”

"M Guokee's nuclear submarine," "Maybe the 'Los Angeles' of the Seventh Fleet." ”

"It should be 'The Waves,' or 'Virginia.'" The sonar chief corrected the co-captain's statement, "There is no matching characteristic noise data, and it is certainly not 'Los Angeles.'" ”

At this moment, a command that the ink was not dry spat out of the laser printer.

"Urgent dive." Hua Guofeng quickly read the order he had just received, and handed it to the deputy captain. "We've done our job, it's long past time to return."

After reading the order, the co-captain sighed secretly and nodded to the helmsman who looked back at him.

A return order from the General Staff, the "Sailfish" should go home.