In Yan Xueyi's idea, the submarine will be the secret weapon of the Imperial Navy against the navies of Britain and France, so the submarine needs to be kept strictly secret. Pen % fun % Pavilion www.biquge.info

The land and sea where the Jiangnan Shipyard is located have been blocked, and ordinary Imperial nationals and foreigners cannot enter the Jiangnan Shipyard at all, and if they do not listen to the dissuasion and enter the area, the armed forces in charge of the guard can directly kill them.

Even so, the Jiangnan shipyard itself had to do some camouflage and concealment.

In the Jiangnan Shipyard, there is a semi-enclosed wharf, from the outside of the wharf, it is almost impossible to see what is in the wharf, and the No. 2 submarine made by the Jiangnan Shipyard is docked in this wharf.

When a group of people walked into this wharf, they saw a strange submarine docked on the edge of the wharf, which was 37 meters long, but there were not many exposed parts on the water, and the shape looked relatively "ugly".

The No. 2 submarine is actually an experimental submarine, but the experimental demonstration work of the No. 2 submarine has basically ended, and after many inspections by the Jiangnan Shipyard, as long as the No. 2 submarine is improved, the newly manufactured submarine can be equipped with the Imperial Navy, which is the reason why Yan Xueyi intends to inspect the imperial shipbuilding industry, and every step of the development of the imperial shipbuilding industry will appear on Yan Xueyi's desk.

Approximate parameters of the commander of the second submarine:

surface displacement of 243 tons, underwater displacement of 328 tons;

37 meters, 4.3 meters wide, 8.6 meters high;

The maximum depth of dive is 30 meters;

Endurance: 500 nautical miles/10 knots at the surface, 50 knots at 50 knots underwater;

Periscope depth: 8 meters

Armament system: one 450 mm torpedo tube in the bow of the ship, which can carry three torpedoes;

The submarine crew is 12~14 people.

According to the data of the No. 2 submarine, the No. 2 submarine can already be installed in the Imperial Navy, but the No. 2 submarine has a short range, and it can be used as a coastal defense weapon, and if it is engaged in ocean-going battles, it will be powerless.

Yan Xueyi also doesn't look down on the combat effectiveness of the No. 2 submarine, but the No. 2 submarine is already a qualified submarine, although the combat effectiveness is not good, but it can still be used as a training ship, and the two naval fleets of the empire will be equipped with a large number of submarines in the future.

At this time, Jiangnan Shipyard has been able to build the upgraded No. 2 submarine, at the same time, the new type of submarine is also being designed, and the No. 3 submarine on the drawing board will have a larger displacement, endurance, and diving depth than the No. 2 submarine, and the No. 3 submarine will carry more people and its combat effectiveness will be more powerful.

It is expected that the third submarine will meet the standards of naval warfare, and even without the cooperation of the fleet, the third submarine will be able to act alone.

The submarine development speed of Jiangnan Shipyard is quite good, Yan Xueyi showed a smile on the corner of his mouth, and said to Xu Xiake and others: "You have done a good job, I will give you a credit." ”

The credit that Yan Xueyi said represents the bonus, and next year, everyone in the empire will try their best to get the "credit".

Ding Ruchang, who accompanied Yan Xueyi to inspect the Jiangnan Shipyard, finally asked the management of the Jiangnan Shipyard what a submarine was, but they still did not have much interest in the submarine.

In previous naval battles, everyone was a giant ship with artillery and a head-on confrontation, and the navies of Western countries believed that it was not a gentleman's practice to use submarines to sneak attack underwater.

The word "gentleman" comes from Western countries, and many people in the Imperial Navy have studied in England or France, resulting in the Imperial Navy's combat methods being similar to those of Western countries.

This is not what Yan Xueyi wants, on the road of the development of the Imperial Navy, it is better to slowly withdraw from the Navy from naval officers like them who have studied in Western countries, and the Empire already has the ability to cultivate naval talents belonging to the Chinese Imperial System.

From the first battle between the Chinese Empire and the combined fleet of Britain and France, naval warfare will no longer follow the principle of confrontation between giant ships and artillery, as long as the enemy can be defeated, any method can be used, airships, submarines, in the case of the enemy has no means of defense, are killer weapons, can give the enemy a fatal blow.

However, now the Imperial Chinese Navy is still inseparable from those soldiers of the "old era", and can only slowly change.

In order to make Ding Ruchang, Liu Buyun, and Zhang Zhidong, the three high-ranking officials of the imperial navy, pay attention to submarines, Yan Xueyi instructed Jiangnan Shipyard to conduct a live-fire exercise, and the No. 2 submarine docked at the dock, although there were some minor problems, it was still able to withstand surface and underwater navigation many times.

The next morning, the Royal No. 1 airship flew to a closed sea area off the coast of Shencheng, the altitude of the airship flight was not high, only more than 300 meters away from the sea level, and then through the telescope, you can clearly see a dilapidated steamer parked not far away, this dilapidated steamer is the target.

On the other side, Xu Xiake personally led the team to drive the No. 2 submarine to sea ahead of schedule, and two torpedoes had already been placed in the No. 2 submarine.

After more than three hours of sea surface sailing, the No. 2 submarine was not far from the reserved sea area, and at this time, the No. 2 submarine began to dive, and after diving seven meters, it stopped diving, raised the periscope, and sailed forward.

It didn't take long for Xu Xiake, who was wearing a raincoat, to see the Royal No. 1 airship in the sky through the periscope, and also saw the target that the submarine needed to attack.

The periscope of the second submarine is not very well sealed, once the submarine raises the periscope, there will be a small amount of seawater seeping down, and the person who uses the periscope must wear a raincoat, otherwise it will get wet, but in the subsequent submarine construction, this place will be improved, and there will be no seawater seepage.

The submarine continued to move and stopped at a distance of 500 meters from the target, and the passengers on the Royal No. 1 airship in the sky did not notice the arrival of the submarine except for Yan Xueyi.

Yan Xueyi didn't say anything and continued to watch this scene.

The submarine slowly floated up, the bow of the ship was already aimed at the target, and at the moment when the submarine was on the surface, a torpedo was launched from the submarine, and not long after, there was a shocking bang, and the target was blown to pieces by the torpedo.

All this happened too quickly, Ding Ruchang and the three of them had just discovered the traces of the submarine that surfaced, and it didn't take long for the target to be blown up, and the submarine that had just launched the torpedo sank rapidly, and at this time it was no longer known where it was.

The three of Ding Ruchang had in their minds the scene that had just happened, no matter how they thought about it, neither the Pacific Fleet nor the South China Sea Fleet could defend against such an adversary as submarines, and it was expected that the Western countries would do the same.

"Submarines can be spotted during the day, but at night, it's not easy to spot." Yan Xueyi seemed to sigh and pointed.

Hearing Yan Xueyi's words, Ding Ruchang's minds exploded.