Off the coast of Dalian, an L-shaped tube slowly rose from under the water, and then aimed at a warship that was leaving the port. Judging from the appearance, this battleship should be the Garibaldi-class armored cruiser Weihai, and this guy who is hiding underwater is going to test his hand with this battleship! At a depth of 10 meters, a dark-faced man was slowly turning his periscope, staring at the battleship that appeared in his field of vision, and then thinking about how to find an ambush point on its course.

To say that this man is also an old man of the Beiyang Fleet, Cai Tinggan of the torpedo boat unit participated in the war as early as the First Sino-Japanese period, and later participated in the Sino-Russian War with the fleet, but unlike those cruisers and battleship colleagues who have made outstanding contributions, Cai Tinggan's torpedo boat formation has achieved very little success. The equipment is also very backward, and Xu Jie has been busy building a decisive battle fleet since he took over the Beiyang Fleet, so he is not very concerned about the development of torpedo boat units, after all, these things are too brittle and the ocean-going performance is acceptable. Therefore, for a long time, the torpedo boat formations of the Beiyang Naval Division developed very slowly.

However, with the establishment of the Huaxia Republic, great changes have taken place in all aspects of the country, and the old people of Cai Tinggan's torpedo boat unit have also ushered in a new life, some of which went directly to the new lightning strike fleet, while the other part entered a unit that was being formed. And Xu Jie also specially summoned Cai Tinggan many times to jointly study the tactics and tactics of the new fleet. And this force is the submarine formation of the Chinese Republic.

In fact, it is reasonable for Xu Jie not to develop torpedo boat formations, before the invention of thermodynamic torpedoes, compressed air torpedoes can be described as tragic in terms of performance and reliability. In terms of range, it is only 300 meters, and in terms of accuracy, when the torpedo can hit the target, you can fly to the opponent's battleship with your mouth and foam. In terms of reliability, it's all too normal for this thing to crash into something that doesn't make a sound. What kind of future do you think Dongdong can have like this? So Xu Jie simply dismantled the torpedoes on the cruiser, so he still wants to plan to buy a new torpedo boat??

But if you want to say that Xu Jie doesn't care about the development of the lightning force, then you have wronged Xu Jie. The fundamental reason for not buying a mine-strike battleship is that the torpedo at that time was too bad, so if the torpedo problem can be solved, then not only the torpedo boat, but also the technology tree of the submarine, a big killer in future wars, has been unlocked! Therefore, Xu Jie is very concerned about the development and finished product of thermodynamic torpedoes and gyroscopes. And these things ended up playing an important role in the Spanish-American War.

Later, with the advancement of diesel engines, generators and batteries, the emergence of submarines was finally possible. Therefore, Xu Jie specially selected a group of skilled people from the lightning strike force to form a submarine force, and Cai Tinggan happened to be the commander of the first submarine force in China. And this unit now has 8 submarines, organized into two detachments.

The Sea Tiger-class submarine in Cai Tinggan's hand is the masterpiece of the German Germania shipyard, and the relevant design standards are designed and built according to the German submarine in Xu Jie's plane. This one is 57 meters long, 6 meters wide and has a draft of 3 meters. Submarines with a displacement of 500 tons on the water and 670 tons on the bottom of the water have biaxial propulsion. The power on the water is 1000 horsepower. The speed is 14 knots, the underwater horsepower is 800 horsepower, and the speed is 6.5 knots. The surface range is 14 knots 2000 nautical miles, and the underwater range is 5 knots 8 nautical miles. The oil carrying capacity is 60 tons. THE ARMAMENT IS FOUR 450MM TORPEDO TUBES, THREE IN THE FRONT AND ONE IN THE BACK. The number of torpedoes was 8 rounds . There are 32 people in total.

At the beginning, Cai Tinggan complained again and again after taking over the submarine, not to mention anything else, just the living environment in the submarine can be called hell, which makes Cai Tinggan and his brothers miserable! When it's cold under water, pull it out in a cold place. For example, the torpedo thing. A hot place is comparable to a mountain of flames, such as a power room. Occasionally, various failures occur, such as battery leakage. For example, if there is a problem with the draining water pump, for the former, Cai Tinggan needs to bring a gas mask to the battery room full of poison gas to repair it, and for the latter, it is a rush repair, if the repair fails, a special smoke bomb torpedo will be fired from the torpedo tube, and then let the brothers of the salvage ship tow the submarine back!

"If it were wartime, I would have died in an accident eight percent of the time." Once Cai Tinggan said such a sentence after seeing Xu Jie, and the words that followed made people's eyes fall to the ground! "If something happens to my buddy that day, don't forget to count me as a war death, don't count me as an accident or a work injury. The pension is not a problem, the point is that it is too embarrassing to spread the news! ”

However, fortunately, after two years of stumbling, Cai Tinggan's submarine formation finally adapted to the use and combat of the new submarine after losing 3 comrades, and in the following days, tactical deduction and exercises were constantly carried out. And today, Cai Tinggan finally waited for an opportunity to verify his training success over the years, the Huaxia Navy specially selected an armored cruiser to be a sparring partner, and Cai Tinggan's task was to "destroy" this armored cruiser that came out every day for routine patrols within 5 days!

ATTACKING A BATTLESHIP IS NOT AS SIMPLE AS ATTACKING A MERCHANT SHIP, YOU CAN ATTACK A MERCHANT SHIP WITH A 105MM RAPID-FIRE GUN ON BOARD, BUT TO ATTACK A BATTLESHIP, YOU HAVE TO DIVE AND USE TORPEDOES. However, it is too difficult to attack an armored cruiser with an average speed of more than 15 knots when the average underwater speed of the submarine is only 5 knots, so there are only two ways to attack the battleship, one is to set up an ambush in advance, and the other is to sneak into the port. Of course, if you want to try your luck, that's fine. Don't think about attacking the port, there are all kinds of anti-submarine nets and anti-mine nets inside, and you can't get out after you go in the same maze, as for the ambush, it's not so simple, Cai Tinggan squatted in the open sea for 3 days to figure out the approximate cruising route, and today, it's Cai Tinggan's harvest, at least that's what he thinks!

And now, the Weihai is slowly sailing along the established course, because it has just left the port, and the speed does not add up, so at this time it is best to launch a torpedo from the side. "It would be nice if we could make a fan-shaped lightning strike like a lightning strike ship." Looking at the huge figure that appeared in the periscope, Cai Tinggan said with some regret that it is difficult for a submarine that fires three torpedoes at most at a time to form a barrage effect similar to that of a surface mine-striking ship, so in order to ensure the hit, Cai Tinggan must get as close as possible, if he can, he wants to set the lightning strike distance at about 700 meters!

I have to say that the hunt at this time is a great test of the personal quality of the submarine commander, there are not too many instruments to assist, the captain must estimate the speed and course of the opponent by himself, and accelerate to occupy the position in the right place and then launch the torpedo! Compared to armored cruisers with three-expansion steam engines, the acceleration of the submarine with electric drive is still more convenient. Cai Tinggan decided to launch an attack from the northwest direction of the target ship, which could not only ensure that the area of the opponent's side was large enough, but also ensure that the torpedo hit the enemy ship as soon as possible.

At the same time, on the Weihai, Sa Zhenbing was holding a telescope and looking at the sea, at this time, not only Sa Zhenbing was alone, but almost all the people on the Weihai who were not on duty were staring at the sea, because when he set sail a few days ago, Sa Zhenbing had already discovered that there was a sneaky thing following him, and he also knew the advantages and disadvantages of the submarine, and he also knew the advantages and disadvantages of both sides. Now that his warship had just left the harbor and was the most vulnerable, once out in the open sea, he decided to take a zigzag evasion route, and now he had to keep an eye on every move at sea!

"Captain, the brothers of the destroyer detachment have arrived, in the rear of our flanks. As long as we can indicate the target, we will definitely teach Cai Tinggan that kid a big lesson! The first mate next to him said with a smile. But it seems that the exercise plan didn't say that there was a destroyer formation involved, right? ”

"The task of this plan is to carry out around the Weihai, the task of Cai Tinggan's submarine force is to sink the Weihai, our task is to ensure the safety of the Weihai, both sides can take what they think is the correct disposal plan without interfering with the daily training of the fleet, not to mention that they can't find friendly help. Could it be that Cai Ting is only allowed to interfere with us, and we are not allowed to fight submarines? What is the rationale for this? Sa Zhenbing said with a smile.

"Captain, there seems to be a situation over there." At this time, a staff officer pointed to an outcropping Dongdong about 2,000 meters away. "Our guests have come to the door, everyone prepares!" Sa Zhenbing immediately ordered. Needless to say, this thing is also known to be a submarine, and anything abrupt on the sea surface is easy for the other party to find, especially when the periscope of this submarine is a little high!

"Report to the captain, the Weihai suddenly headed in the direction of the Sea Tiger 2, and the distance between it and us is getting bigger and bigger." One of the crew members said loudly. "Could it be that the Sea Tiger 2 has been discovered? Liu Bin, this kid just can't hold his breath. Looking at the Weihai, which was getting farther and farther away from him, Cai Tinggan said a little frustratedly. Cai Tinggan is not an honest person, he thinks the same as Sa Zhenbing, since there are not too many regulations in this exercise, it means that there are too many leaks to drill.

One of the simplest points is that no one said that they could discharge a few submarines to participate in this exercise, so in addition to one submarine that was being overhauled in the dock, Cai Tinggan sent all three submarines of the first submarine detachment, two of which were ambushed on the established route, while the other one was waiting at the entrance of Dalian Bay.

"Captain, the situation is not right, this script didn't say that the Weihai can bring anti-submarine ships, right?" At this moment, the crew member said in a trembling voice. "Anti-submarine ships? What's the situation? Cai Tinggan ran to the periscope in a few steps to carefully observe the sea, and after the Weihai turned, four 800-ton destroyers were finally revealed. It turned out that because of the blocking and vision problems of the Weihai just now, the Sea Tiger 1 had not found the destroyer formation behind it, and when the Weihai turned around, Cai Tinggan discovered a hidden arrow in Sa Zhenbing's hand!

Thank you for the reward from the old man in the Strait of the Book Friend, and the monthly pass support of the book friend Shan Xuezhen~~~. (To be continued......)