After the great success of the high-speed gunboat, Xiao Weiguo had a new plan. He decided to start the development of the second offshore weapon platform of the Dragon Soul Ordnance Industrial Complex, which is the Jiaolong submarine program.

The Swedish Navy was also in a period of strength improvement at this time, so the Jiaolong submarine plan of the Dragon Soul Ordnance Complex was favored by the Swedish Navy. In fact, as early as the First World War, Sweden gave birth to a navy, but its development was very slow, and the scale of Sweden's maritime power was very large, and it could only patrol near the coast.

By the beginning of the thirties, the Swedish Navy, pushed by Defense Anderson, began to implement its program of increasing its strength with difficulty. The fast gunboat is one of the most important projects. Now the Dragon Soul Ordnance Complex is going to develop submarines, which, of course, makes the Swedish Navy ecstatic. Although Sweden was a neutral country, it was also attacked by the German army, and it was precisely because of the advanced weapons and equipment provided by the Dragon Soul Ordnance Complex that the Swedish army was able to prevent further German action at the beginning of the war, so that the war came to an abrupt end.

Originally, the Swedish Navy planned to buy large warships and submarines from Britain, France or the Soviet Union, and even the Chief of the General Staff of the Navy, Rear Admiral Lind, led an expedition to these shipbuilding powers and shipyards for an inspection, and the Swedish Navy prepared a large purchase list, including 2 5000-ton cruisers and 10 2000-ton destroyers, and the Swedish Navy wanted to change it to just a small navy operating near the Baltic Sea. However, the purchase of these large warships was very expensive, and several major powers offered high prices, so the Swedish Navy finally decided to purchase them from their own country.

Now they still think it is better to be based on their own military enterprises. At present, the Swedish Navy does not have a very urgent need for large warships such as destroyers and cruisers, so they can wait for the Dragon Soul Ordnance Complex to develop it for them. Of course, now that the submarine project has begun with the Dragon Soul Ordnance Complex, they will be happy to wait for a while.

The Swedish Navy and the Dragon Soul Ordnance Complex soon agreed on the order of submarines. Because with submarines, the Swedish Navy will become a formidable force. The Swedish Navy is ready to purchase six submarines from the Dragon Soul Ordnance Complex. This submarine was named Jiaolong.

The design parameters of the Jiaolong submarine of the Dragon Soul Ordnance Complex are also very advanced at this time. It has a surface displacement of 1,300 tons, an underwater displacement of 1,600 tons, a length of 86 meters, a width of 6.5 meters, and a draft of 4.5 meters. The maximum speed on the surface is 20 knots, the maximum speed under water is 12 knots, and the endurance is 4,000 nautical miles when maintaining a speed of 12 knots. The armament against the sea was 6 533-mm torpedo tubes, all in the bow. It can carry 16 torpedoes and 40 mines.

Although at the beginning, Dragon Soul Ordnance proposed this submarine program. There was a lot of dissent from the Swedish Navy, and in the opinion of many naval officers, the use of such a large submarine in the shallow and quiet Baltic Sea did not seem necessary. You must know that at this time, the average displacement of submarines in some countries of the Baltic region was only about 700 tons.

However, the design intention of the Dragon Soul Ordnance Industry is obviously not only to limit the use of the Jiaolong submarine to the Baltic Sea, and finally Xiao Weiguo gave the design intention to the Swedish Minister of Defense and the Swedish Admirals that this kind of submarine is not only used in the Baltic Sea, nor is it only used for anti-ship and anti-submarine. It can also be used as a minelayer. This dispelled the doubts of the Swedish admirals.

You must know that the submarine is a new type of underwater combat ship that has been brewing for hundreds of years and was not rapidly developed until World War I. It appears. The traditional naval warfare was extended from the surface of the ocean to the underwater, thus giving the naval warfare a new characteristic of three-dimensional and concealment.

During World War I, the main force of the navies of various countries was still surface ships, submarines were only auxiliary forces, and the number of submarines of various countries before the war was relatively small, Germany only had 28, but German submarines had the best performance. They have a maximum depth of 48 meters and a speed of up to 10 knots underwater.

By the time of World War II, various countries had built more than 1,000 submarines and sunk more than 5,000 transport ships and more than 300 warships. At this time, Germany also built its first submarine, the U1 boat. It was launched in June 1935. By September, nine ships had been built, and the first submarine force had been formed.

Xiao Weiguo, of course, knew that Germany had great success in using U-boats in World War II, and submarine warfare was a very important part of naval warfare in World War II. By the outbreak of World War II, submarines have developed greatly in terms of technical performance and tactics, and all belligerents have used submarines in large quantities in operations, of course, the submarines at that time were relatively primitive open decks, and the Jiaolong submarine of the Dragon Soul Ordnance Complex directly used the design of closed submarines, and its main imitation object was the Romeo-class submarine of the Soviet Union after World War II, that is, China's Ming-class submarine.

Of course, in terms of tonnage, perhaps the Jiaolong-class submarine is not a big one. Back in the twenties, the United States began to build Barracuda-class submarines with a displacement of almost three thousand tons, and even V-4-class submarines with a displacement of more than four thousand tons. The U.S. Barracuda-class submarine has a semi-double-hull structure with high reserve buoyancy, but its sailing performance is poor due to the overweight of the forward boat. In order to increase the engine power, the power form of diesel-electric combined propulsion was adopted, and the surface speed was much lower than the design index of 21 knots, only reaching 18.7 knots, mainly due to the immaturity of the hull structure and engine technology at that time. Of course, it is also a decked hull structure, and it also retains a deck gun of 127 mm 51 times the caliber.

But the Jiaolong-class submarine of the Dragon Soul Ordnance Complex is different. The Jiaolong-class submarine is divided into seven compartments, namely the first torpedo compartment, the front battery compartment, the command compartment, the rear battery compartment, the diesel engine compartment, the propulsion motor compartment and the tail torpedo compartment. In the first torpedo compartment there are six 533 mm launch tubes and six spare torpedoes, the bow horizontal rudder and anchor device, and an emergency blowing system.

In the first battery compartment there is a set of batteries and an officer's quarters. In the command cabin, radar, sonar, navigation, steering, submersible, balancing, firing command, as well as high and medium compression, hydrophobic, hydraulic, air conditioning, refrigeration, battery water cooling and other major systems are concentrated. There are also periscopes, radio antennas, and snorkel lifts.

In the aft battery compartment there is a set of batteries and crew cabins. In the diesel engine room, there are 2 diesel engines, whole ship ventilators, air conditioning and refrigeration systems, etc. In the propulsion motor compartment there are 2 main propulsion motors and 2 cruise motors and their control equipment.

The Jiaolong-class submarine has 11 ballast water tanks and has good underwater unsinkability and seaworthiness. (To be continued.) )