The news made all the faces in Cambridge sink.

　　 Especially Shi Xiong, suddenly there was some irritability in his heart.

　　 Others, including Adrian Carlos, may only know how much manpower and material resources were used to build this ship, but they absolutely don't know what the entire Yanhuang tribe paid for behind this ship.

　　 Only Shi Xiong himself knew how much the tribe had paid to build this ship. And what the tribe paid is far beyond what the ship underfoot can reflect.

　　 Before the First World War in the original historical time and space, there is a saying that makes sense-whether a country is strong or not depends on the power of the battleships that the country has.

The meaning of 　　 is obvious, but it also illustrates a problem from another aspect, that is, the level of battleships owned by a country is a manifestation of a country's comprehensive capabilities.

　　 This also includes the country's scientific research and manufacturing capabilities!

　　 The facts are also true. Before World War I, and even during the period from World War I to World War II, battleships were the top weapons in a country, not one of them.

　　Of course, in this era, you can also think of sailing battleships as battleships.

　　 But compared to the sail battleship, Carlos's technology applications are undoubtedly higher, and the two are definitely not on the same level.

　　 In order to build the Carlos, Shi Xiong tried his best to solve the numbers. He told almost everything he knew, and he took out almost everything he could develop and manufacture.

There are many technologies that were originally difficult to achieve in this era, such as hot riveting technology for ship hulls, such as forging technology of marine steel plates, such as propeller processing technology, such as high-power steam boiler technology, such as in-ship telephone communication technology……

　　 No one knows better than Stone Bear how much the entire tribe has done in the eight years to build this ship.

　　 is like the steel plate used to build this ship. If Shixiong had just passed through it, it would have been impossible to produce. Later, after Shixiong became the chief, he had tremendous power in his hand, and he began to work hard for forging qualified marine steel plates.

　　Of course, this so-called marine steel plate is definitely far from being compared with later marine steel plates. The so-called marine steel plate in this era is not even better than the steel plate used by a fishing boat in later generations.

But there is no way. In this era, let alone steel plates. Even the steel bars are currently only produced by the Yanhuang tribe. In Europe, they can't even produce a roll of qualified steel bars, let alone for building ships. Steel plate.

　　 But even so, Shixiong can't come up with any hot-rolling and cold-rolling technologies for later generations. That kind of technology is still too difficult for the current Yanhuang tribe, and the tribe does not have the ability to build a hot rolling mill or a cold rolling mill.

　　 So Ishikuma had no choice but to retreat, and used the forging method to produce the so-called marine steel plate.

　　 But even the forging technology has caused Shi Xiong a headache. Without him, if you want to forge a qualified steel plate, you have to have the most basic forging machine, right? And even the simplest forging machine, Shi Xiong couldn't make it now.

　　 There is a way to get it out of the steam hammer, but that thing cannot forge steel plates.

　　 There is no way, Shixiong can only use the most primitive hydraulic press for forging.

The working principle of the hydraulic press is very simple. The previous Shixiong learned it when he was in junior high school physics, and in the original historical time and space, the world's first hydraulic press will appear in the UK in more than two decades. The hydraulic press is not that difficult. Something fiddled with. But even so, in order to build a hydraulic press capable of forging, the entire tribe took a full ten months.

　　 Under the constant guidance of Shixiong, as many as forty people from Europe, including Jack Williams, have been busy with this hydraulic press for ten months!

The hydraulic press that 　　 finally came out was only a thousand-ton hydraulic press.

Such a hydraulic press can barely be used for forging steel plates with a thickness of 20 mm-the thickness of the marine steel plates used in the hulls of later destroyers is only about 10 mm, but the current steel is far from comparable to later generations, so Shixiong can only use additional The method of thick steel plate to enhance the strength of the hull.

　　 In addition, the current marine steel plates do not have a great demand for area. They are all riveting techniques. It is a big deal to put them together one by one...

　　 There are marine steel plates and the most important keel steel...

　　 When keel steel and marine steel plates are available, this ship can be built, but the question is, you can’t just use these steel to build a ship hull, right? You have to have enough motivation to propel this ship, right?

　　 So the high-power steam boiler technology had another breakthrough.

　　 With the technology of high-power steam engine, you have to find a way to turn the power generated by the steam engine into thrust, right? So gearbox technology and propeller technology must be available-Shixiong doesn't want to use paddle wheels to propel this steel battleship, it is too low, and the safety is not high.

　　 If he can't get propeller propulsion technology, Shi Xiong would rather not build this steel warship.

　　 So Ishikuma took out the Archimedes spiral of the forged propeller again...

　　 It took nearly two years for the scientific research team to develop a barely qualified propeller!

　　 The ship's hull, power, propulsion, and weapons are ready, but what about internal communications?

　　 So Shixiong had to instruct the scientific research team to engage in magnet telephones and wires for communication...

　　The outer insulation layer of the wires alone kept the scientific research team busy for dozens of days.

　　 And when the conditions for building this ship were all met, and when the steel battleship was built on the slipway, many problems emerged one after another.

　　 The sealing problem of the watertight tank, the sealing and drainage problem after the wave on the deck~lightnovelpub.net~the sealing problem of the watertight door...etc.

　　 I don’t know if I don’t build it. I know that the main problems encountered before are just an appetizer. When the ship started to be built, all kinds of problems and problems were really unconscious.

　　 For example, in the later stage of construction, the sealing problem of the propeller shaft became a problem again.

　　 Although Ishikuma knows how to seal the propeller shaft, it is impossible to create such a sealed bearing in this age. So a group of people pondered for a long time before choosing a compromise method, using rubber and vegetable oil to lubricate the seal.

　　This approach is not a long-term solution. If the propeller shaft runs for a long time, the natural rubber used for sealing will inevitably produce huge wear and tear, and the sealing effect will naturally be greatly reduced.

　　 But there is no other way. Under the current circumstances, this method can only be temporarily sealed.

　　 All in all, the difficulties encountered by this ship before and during its construction are countless. Otherwise, it would take a full six years for the ship to be built.

　　 In order to solve these problems and sufferings, in order to successfully build this ship, everyone, including Stone Bear, is absolutely scrambling and exhausting.

　　 It’s not an exaggeration to say that the energy the Stone Bear used to conquer other tribes on this continent could not compare to the energy used on this ship.

　　 Having paid such a big price, the ship has been successfully launched into the water. This was originally a very happy thing, but now suddenly there is a problem of water leakage from the propeller shaft. How can this not make Shi Xiong feel anxious?