As a second-class battleship, the treaty cruiser has been strictly restricted by the treaty since its birth. Whether in history or in this plane, the single-ship tonnage of the treaty cruiser is not very abundant. This is determined by its mission.

.First of all, the cruiser needs to have a higher speed in order to defeat the battleship

Run away when there is an opportunity in front of you, and with the development of technology, the speed of battleships is also constantly increasing. Historically, the speed of new European ships in World War II was around 30 knots. The Richelieu could even run away at maximum power.

32 knots! Even the slower American battleships can reach around 27 knots.

Therefore, the speed of the cruiser must be high. Historically, the Japanese Navy has higher requirements for the speed of the cruiser, because in the Japanese Navy's combat plan, the cruiser is to lead the lightning strike team in a high-speed assault. At this time, speed becomes a very important factor.

Such an important factor that the Japanese installed a cruiser with power comparable to that of a battleship! What is the concept of installing a 150,000-horsepower power on a 10,000-ton cruiser? The maximum speed is about 37 knots!

The second is the issue of defense. In fact, this issue can be seen as a derivative problem of the pursuit of high speed. If you want to have high speed, you need high horsepower, and high horsepower requires boilers and turbines. And these things obviously cannot be without protection, and then armored belts are required.

It can cover power cabins and weapons. Then let’s look at the problem. Look at the length of cruisers in World War II in history. The shorter ones

The heavy cruiser is 180 meters. The longer ones are even 200 meters! You know, the Queen Elizabeth-class battleships and the Bavaria-class battleships in World War I are less than 200 meters in length! In terms of armor box length, the cruiser is actually as long as World War I

The length of a battleship is one level. But what is the tonnage of the latter? How many tons is the former? It is too difficult under the limit of 10,000 tons.

What's even more tragic is that the artillery penetration in World War II has also made great progress. For example, Japan's 8-inch L50 main gun can penetrate 150mm of vertical armor within 15,000 meters. In fact, this distance is not enough for an 8-inch gun.

It’s already quite far away

, if the distance is shortened, the penetration will be even more terrifying. As for the 8-inch gun with the strongest vertical penetration in the 2nd War, the 8-inch gun of Prince Eugen is almost impossible to defend. This results in, in the 2nd War

Almost all ships are unable to 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 gun of the treaty cruiser is much greater than the defensive power. Therefore, even the best-designed cruiser in history cannot fully guarantee that the waterline armor can withstand the attack of the 8-inch gun. What?

?How about lightning protection? This thing is suitable for most treaties.

For a cruiser, it depends more on luck than on its own defense. Once the power compartment is hit by a shot, it is almost impossible to move. But if the bow or stern of the ship is bombed, you can still make it back. Therefore, the treaty cruiser's

A major feature is that even if the attack is sufficient and the defense is insufficient, it is relatively fragile!

And in this plane, although the tonnage has increased, the caliber of the artillery has also increased! The tonnage has increased by 50%, but the caliber of the artillery has increased by 2 inches! The situation of attacking the strong and defending the weak has not changed, and the situation requiring higher speed still exists.

.So the problems encountered by treaty cruisers in this plane originate from the original

In essence, it is not much different from the one in history. It is just that the ship is bigger. Although it is difficult to design a good cruiser, you still have to do it. Many countries in history have their own understanding of cruisers.

.A large number of treaty cruisers were built, and naturally there were some very useful designs among them.

As a time traveler who came from the navy, Xu Jie is still quite interested in cruisers, especially heavy cruisers. Some successful designs in history can be used in this plane. After all, the purpose 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.

Let’s talk about the British first. Historically, British cruisers were called tin boats. The meaning is very clear, that is, the protection was too poor. At least before the modification, the protection was quite miserable. The speed was not fast. As for the artillery, it was just like that. So.

Generally speaking, the performance of the cruisers designed by the British is relatively mediocre. The evaluation of American cruisers is also relatively average, and the Baltimore's design is relatively mediocre.

The data on paper are better, but the armored belt is still narrow. Moreover, the tonnage of Baltimore is also a bit high. As for Des Moines, this ship is no longer a treaty cruiser. With enough tonnage, the Americans can naturally do whatever they want.

It was built, so it doesn’t have much reference. (The author doesn’t know much about American treaty cruisers, so I won’t say more.)

As for Germany? First of all, the first thing to note is that almost all German heavy cruisers in World War II exceeded the treaty tonnage limit. (In fact, there are still many treaty heavy cruisers that exceed the treaty tonnage limit a little bit, but it cannot exceed too much.) And Germany also

There is no limit on the tonnage of cruisers. So whether it is Admiral Sipper or Prince Eugen, the tonnage is too large. And if you say the tonnage is larger, it doesn't matter. At least the combat effectiveness is higher. Unfortunately, the standard displacement is 14,000.

From tons

The defense of the jumped Sipel-class armored cruiser is completely inadequate for its tonnage. The thickness of the outer armor is 80mm and there is a 50mm dome armor on the back. What is the concept of 80mm? A 6-inch class artillery can penetrate it at a distance of 20,000 meters.

, although there is dome armor at the back, it is not a good thing if the waterline is sieved by the CL's main gun, and even if you rely on dome armor, whether you can block the 8-inch gun is still a problem. More importantly, this product is too heavy.

!

The following classes of treaty cruisers can really become better ones: France's Algiers-class heavy cruisers, Italy's Zara-class cruisers and Duke of Abruzzi-class cruisers, heavy cruisers built after Japan's Myoko, and light cruisers converted from them.

The Mogami-class heavy cruiser is the heavy cruiser. Because the cruisers behind Japan's Myogo are basically the same in terms of defense layout, the Mogami-class is used as an example.

First, let’s talk about the horizontal and vertical protection of heavy cruisers. In this regard, Japan and Italy have their own advantages and disadvantages. For example, the power compartment of Japan’s Mogami cruiser is 100mm armor tilted at 20 degrees, which can be used to defend against 6-inch guns.

, and the ammunition bay section is 140mm tilted 20 degrees

The armor, because of its larger angle, has the ability to withstand 8-inch artillery attacks. The Italian Lazar-class cruiser has a 150mm thick vertical main body. In terms of wheel defense, it should be between the power of Mogami.

150mm vertical gap between cabin defense and magazine defense

The direct armor's resistance to 8-inch shells is still relatively weak. It depends on the angle of incidence. As for Algiers, the vertical protection of this ship is really not as good as that of Japanese and Italian ships, and it is not as good as all round. But if these are compared with Abruzzi

If compared to the Duke-class light cruiser, it may be even worse, because

An advanced cap removal design concept was adopted for this battleship. First, the outer 30mm armor is used to destroy the armor-piercing projectile caps, and then the internal 100mm armor is used to assist in blocking the shells. This design and protection effect should be higher than the top

The effect of 140mm sloped armor.

Then there is the horizontal protection. In this aspect, the Italian Zara-class cruiser has an upper level of 20mm and then a main level of 70mm. The horizontal protection of the Japanese cruiser is relatively poor. The Mogami power compartment section has 35mm horizontal armor.

There is 40mm armor above the ammunition magazine, and of course there is a 20mm DS steel plate on the upper deck. Naturally, it cannot be compared with the main horizontal thickness of the Lazar-class, which has a single layer of 70mm. The main horizontal protection of the Algiers is equivalent to that of the Lazar.

Finally, there is underwater protection. There are two types of underwater protection. One is torpedo protection. The other is waterproof to be hit. In this comparison, Raza-san fell to his knees, while the Mogami heavy cruiser and Al

It can be said that the Gier-class heavy cruisers have their own merits. Japanese cruisers attach great importance to the defense of water bombs. The main equipment of the Mogami extends to the bottom of the ship. The layout is similar to that of the Yamato.

The thickness of mine protection armor is 60 to 30mm. This thickness can already form a certain defense against 8-inch underwater bombs, while the Algiers class has better defense against torpedoes. The depth of the underwater protection system of this class of French cruisers is actually

It can reach 3.5 meters! Under the same conditions, when it comes to torpedo protection, no treaty cruiser can compare with Algiers.

Generally speaking, Italian cruisers have a clear advantage in terms of total armor thickness. The 150mm main armor covering from A turret to D turret is really powerful and domineering. At the same time, the horizontal armor protection is also first-rate. The Japanese Navy has sloped armor due to its existence.

Its side string protection is different from the Italian Zara class. Its horizontal protection is weak, but its underwater bomb protection is excellent.

.The French Algiers-class cruisers have first-class horizontal protection and first-class underwater defense in depth. (One thing that needs to be explained is that the protection of other French heavy cruisers can only be described as pathetic, and none of them are really good at it.

That’s Algiers--! The total armor weight of Algiers reaches more than 2,600 tons, which is nearly 1,000 tons heavier than the previous level French cruiser!)

As for power? No one can match the speed of the Japanese cruiser. A warship like Mogami with a length of more than 200 meters, a width of only 18 meters, and a length-to-width ratio of more than 10 is like a long and narrow Japanese sword.

With a power of up to 150,000 horsepower, this battleship is far faster than cruisers of the same level. During a trial voyage, the displacement was as high as 12

The 669-ton Mogami-class cruiser actually ran a speed of 35.96 knots with an output of 154,000 horsepower. Although it is a little behind the expected speed of 37 knots, this speed is proud enough. In comparison, the French Algiers

, his speed is about 33 knots, which is about 3 knots behind the Japanese cruiser.

Speaking of weapons, the significance of reference is actually very limited, because the main guns of light cruisers in this era are capped at 175mm. The main guns of heavy cruisers are capped at 10 inches, and the 8-inch main guns are somewhat high and low. Historically

Some famous 8-inch guns may disappear in the long river of history, such as

The German 8-inch L60, as well as the ultra-high-firing 8-inch gun called the 8-inch machine gun equipped on the Demaine. The Chinese Navy's cruisers will naturally arm themselves with the highest standard weapons, so the Chinese Navy started the 175mml55

Research work on the main gun and the 10-inch l50mm main gun.
Chapter completed!