The treaty cruiser, as a second-class capital ship, has been subject to the strict restrictions of the treaty since its inception...... Historically, and in this plane, the tonnage of a single ship of treaty cruisers was not very surplus. This is dictated by his mission. First of all, the cruiser needed to have a high speed in order to have a chance to run away in front of the battleship, and with the development of technology, the speed of the battleship was also increasing, and the speed of new ships in Europe was around 3 knots in history. The Risalieu can even run up to 3 knots with its maximum output! Even the slower American battleships had 7 knots or so. So the speed of the cruiser had to be high. Historically, the Japanese Navy had higher requirements for the speed of the cruiser, because in the Japanese Navy's battle plan, the cruiser was to lead the lightning strike team to attack at high speed, and at this time speed became a very important factor, so that the Japanese installed the cruiser with a power comparable to that of a battleship! What is the concept of a 10,000-ton cruiser with 10,000 horsepower? The fastest speed is around 37 knots!

Then there's the issue of defense...... In fact, this problem can be seen in the derivative problem of the pursuit of high speed, if you want to have high speed, you need high horsepower, and you need boilers and turbines with high horsepower. And these things obviously cannot be left without protection, and then it is required that the armor belt can cover the power compartment and weapons. So let's look at the question and look at the length of cruisers in battles in history, the short heavy cruiser is 18 meters. The longer ones are even up to the meter! You know, the Queen Elizabeth-class battleships and Bavaria-class battleships in World War 1 are less than a meter long! In terms of the length of the armored box, the cruiser was actually on the same level as the length of the 1 battleship. But how many tons is the latter, and how many tons is the former? It's too difficult under the limit of 10,000 tons..........

WHAT'S EVEN MORE TRAGIC IS THAT THE PENETRATION DEPTH OF ARTILLERY IN THE WAR HAS ALSO MADE GREAT PROGRESS, FOR EXAMPLE, THE JAPANESE 8-INCH MAIN GUN CAN PENETRATE 1MM OF VERTICAL ARMOR WITHIN 1 METER. In fact, this distance is already relatively far for an 8-inch gun, and if the distance is shortened, it will be more frightening to wear deep. As for one of the most vertical penetrating 8-inch guns, Prince Eugen's 8-inch guns were almost impossible to defend. This resulted. Almost all the ships in the battle could not effectively defend themselves against their own 8-inch guns.

To sum up, under the premise of ensuring speed, the attack power of the 8-inch guns of the treaty cruisers is much greater than the defensive power, so even the best designed cruisers in history cannot fully guarantee that the waterline armor can withstand the attack of the 8-inch guns. What the? How about lightning protection, you ask? For the vast majority of treaty cruisers, this thing is more about luck than on their own defense, and if you hit the power compartment, you will hardly be able to go. But if you blow up to the bow or stern of the ship, you can make do with it. Therefore, one of the major characteristics of the treaty cruiser was that even if the attack was more than enough, the defense was insufficient. It's all crispy!

And this plane. Although the tonnage has increased. But the caliber of artillery has also increased! The tonnage has increased by %, but the caliber of artillery has increased by inches! The situation of attacking the strong and defending the weak has not changed, and the situation of requiring higher speed still exists, so the problems encountered by the treaty cruisers in this plane are essentially not much different from those in history, except that the ships are larger. Although it is difficult to design a good cruiser, it is also necessary to do it, and many countries in history have their own understanding of cruisers. A large number of treaty cruisers were built. Naturally, there will be some very beneficial design ..........

As a traverser from the navy, Xu Jie is still interested in cruisers, especially heavy cruisers. Some of the most successful designs in history can be used in this plane, after all, the usefulness is the same, but the tonnage is larger. So before designing his own cruiser, Xu Jie needs to analyze the cruisers of various countries in history and find the advantages and disadvantages from them. …。

Let's talk about the British first, the British cruiser left the title of tin ship in history. The meaning is very clear, that is, the protection is too poor. At least before the modification, the protection was quite sad. The speed is also not fast, as for the artillery. That's it. So in general, the cruisers designed by the British were relatively mediocre in performance. And the evaluation of the American cruisers is also more average, and the armor data of Baltimore on paper is better, but the armor belt is still narrow. And the tonnage of Baltimore is also a little high, as for Des Moines, this cargo is no longer a treaty cruiser, and if the tonnage is sufficient, the Americans can naturally build it at will, so it does not have much to learn from. (The author doesn't know much about American treaty cruisers, so he won't say much.) ）

As for Germany? First of all, it is important to note that almost all of the German war cruises exceeded the treaty tonnage limit. (Actually, there are quite a few more treaty revisits that exceed a little bit of the standard.) But it can't be too much. And Germany also did not have a limit on the tonnage of cruisers. So whether it's Admiral Siperel or Prince Eugen or something, the tonnage is on the large side. And if you say that the tonnage is larger, forget it, so the combat effectiveness is higher...... IT IS A PITY THAT THE DEFENSE OF THE SIPEL-CLASS ARMORED CRUISER WITH A STANDARD DISPLACEMENT OF 14 TONS IS COMPLETELY WORTHY OF HIS TONNAGE, THE THICKNESS OF THE OUTER ARMOR IS 8MM, AND THEN THERE IS MM DOME ARMOR IN THE BACK. What is the concept of 8MM, the 6-inch level artillery can penetrate it at a distance of meters, although there is still dome armor behind, but it is naturally not a good thing for the waterline to be beaten into a sieve by C's main gun, and even if you rely on dome armor, it is also a question whether you can block the 8-inch gun, and more importantly, this cargo is too heavy! . …。

The best treaty cruisers that can really be completed are the following classes, the French Algiers-class heavy cruisers, the Italian Zara-class cruisers and the Duke of Abruzzi-class cruisers, the Japanese Myoko heavy cruisers built after the Myoko, and the top-class heavy cruisers converted from light cruisers to heavy cruisers.

First of all, the horizontal and vertical protection of the heavy patrol, in this regard, Japan and Italy can be said to have their own advantages and disadvantages. FOR EXAMPLE, JAPAN'S TOP-CLASS CRUISER HAS A POWER COMPARTMENT WITH 1MM INCLINATION ARMOR, WHICH CAN BE USED TO DEFEND AGAINST 6-INCH GUNS, AND THE AMMUNITION COMPARTMENT IS 14MM INCLINATION ARMOR, WHICH HAS THE ABILITY TO RESIST 8-INCH GUN ATTACKS BECAUSE OF ITS LARGE ANGLE. THE ITALIANS' RAZA-CLASS CRUISER IS A 1MM THICK VERTICAL MAIN ARMAMENT, AND THE WHEEL DEFENSE SHOULD BE BETWEEN THE POWER COMPARTMENT DEFENSE AND THE AMMUNITION DEPOT DEFENSE OF THE TOP ONE. 1MM VERTICAL ARMOR IS STILL RELATIVELY RELUCTANT TO RESIST 8-INCH SHELLS, DEPENDING ON THE ANGLE OF INCIDENCE. As for Algiers, the vertical protection of this ship is really inferior to that of the Japanese and Italian ships, and it is not as good as all-round ones. But these are compared with the Duke of Abruzzi-class light cruisers. IT MAY BE EVEN WORSE, BECAUSE THIS BATTLESHIP ADOPTS AN ADVANCED DESIGN CONCEPT OF THE QUILT CAP, FIRST THE OUTER 3MM ARMOR IS USED TO DESTROY THE ARMOR-PIERCING SHELL QUILT CAP, AND THEN THE INTERNAL 1MM ARMOR IS USED TO ASSIST IN BLOCKING THE SHELLS, SUCH A DESIGN AND PROTECTION EFFECT SHOULD BE HIGHER THAN THE EFFECT OF THE TOP 14MM INCLINED ARMOR ..........

Then there is horizontal protection. IN THIS REGARD, THE ITALIAN ZARA-CLASS CRUISERS WERE AT THE UPPER LEVEL OF MM AND THEN THE MAIN LEVEL OF 7MM. THE HORIZONTAL PROTECTION OF JAPANESE CRUISERS WAS RELATIVELY POOR, AND THE TOP POWER COMPARTMENT WAS 3MM HORIZONTAL ARMOR. ABOVE THE AMMUNITION DEPOT IS 4MM ARMOR, AND OF COURSE ON THE UPPER DECK THERE ARE MM DS STEEL PLATES. Compared with the main horizontal thickness of 7MM in a single layer of the Raza level, it is naturally not good. And the main level of protection in Algiers is comparable to that of Laza.

Finally, there are two kinds of underwater protection, one is anti-torpedo, and the other is waterproof bullet, in this comparison, Raza knelt down, and the top class heavy cruisers and Algiers-class heavy cruisers can be said to have their own merits, and Japanese cruisers pay great attention to the defense of underwater bullets. THE MAIN OUTFIT OF THE MOGAMI EXTENDS TO THE BOTTOM OF THE SHIP, AND THE ARRANGEMENT IS SIMILAR TO YAMATO, AND ITS MINE ARMOR THICKNESS IS 6 TO 3MM, WHICH CAN ALREADY CONSTITUTE A CERTAIN DEFENSE AGAINST 8-INCH UNDERWATER BULLETS, WHILE THE ALGIERS CLASS HAS A BETTER DEFENSE AGAINST TORPEDOES, AND THE DEPTH OF THE UNDERWATER PROTECTION SYSTEM OF THIS CLASS OF FRENCH CRUISERS CAN REACH 3.0 METERS! In terms of the protection of torpedoes under the same conditions. There is no such treaty cruiser that can be compared with Algiers. …。

IN GENERAL, THE CRUISERS OF THE ITALIANS HAD A CLEAR ADVANTAGE IN TERMS OF THE TOTAL THICKNESS OF THEIR ARMOR, AND THE COVER OF THE 1MM MAIN ARMAMENT FROM TURRET A TO TURRET D D D WAS REALLY FORMIDABLE AND DOMINEERING. At the same time, horizontal armor protection is also first-class. The Japanese Navy, on the other hand, has its own advantages compared with the Italian Zara class due to the existence of inclined armor. Horizontal protection is weak. But the underwater bomb protection is excellent. And the French's Algiers-class cruisers were first-class in terms of horizontal protection and first-class depth of underwater defense. (It should be noted that the protection of the other heavy cruisers of the French can only be described as pathetic...... Algiers is the one who can really get his hands on it! The total weight of the armor in Algiers reached more than 6 tons, which was almost 1 ton heavier than the French cruisers of the previous class! ）。 …。

As for motivation? No one can match the speed of the Japanese cruisers, such as Mogami, which is more than 18 meters long, 18 meters wide, and has a length-to-width ratio of more than 1 like a narrow sword, plus up to 10,000 horsepower. Let the speed of this battleship far throw off cruisers of the same class. During one of the sea trials. The most advanced cruiser with a displacement of 1,669 tons actually ran a speed of up to 3.96 knots with an output of 14 horsepower. Although it is a bit short of the projected speed of 37 knots. But this speed is also proud enough. Comparatively speaking, the Frenchman's Algiers, his speed was about 33 knots, which was about 3 knots behind the Japanese cruisers.

SPEAKING OF WEAPONS, IN FACT, THE SIGNIFICANCE OF BORROWING IS VERY LIMITED, BECAUSE THE MAIN GUNS OF LIGHT CRUISERS IN THIS ERA ARE CAPPED AT 17MM. And the heavy cruiser is capped by a 1-inch main gun. The 8-inch gun is a bit too high or too low. Some famous 8-inch guns in history may be about to disappear into the long river of history, such as the 8-inch 6 of the Germans, and the ultra-high rate of fire 8-inch guns that the German Main is equipped with called 8-inch machine guns. THE CRUISERS OF THE HUAXIA NAVY NATURALLY ARMED THEMSELVES WITH WEAPONS OF THE HIGHEST STANDARD, SO THE HUAXIA NAVY BEGAN RESEARCH WORK ON THE 17MM MAIN GUN AND THE 1-INCH MM MAIN GUN.

Thanks to book friends zhouyu1976, hukaikaka, and Daxia 7 for their tips~~~, as well as book friends smyhe783's monthly pass support ~~~~. (To be continued.) (。 ))。